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EP3792463B1 - Exhaust gas aftertreatment device with exhaust gas aftertreatment devices replaceable by releasing a non-destructively releasable connection - Google Patents

Exhaust gas aftertreatment device with exhaust gas aftertreatment devices replaceable by releasing a non-destructively releasable connection Download PDF

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Publication number
EP3792463B1
EP3792463B1 EP19197440.1A EP19197440A EP3792463B1 EP 3792463 B1 EP3792463 B1 EP 3792463B1 EP 19197440 A EP19197440 A EP 19197440A EP 3792463 B1 EP3792463 B1 EP 3792463B1
Authority
EP
European Patent Office
Prior art keywords
exhaust gas
receiving tube
jacket
gas treatment
section
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP19197440.1A
Other languages
German (de)
French (fr)
Other versions
EP3792463A1 (en
Inventor
Ralf Kösterke
Patrick Janson
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Roth Technik Austria GmbH
Original Assignee
Roth Technik Austria GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Roth Technik Austria GmbH filed Critical Roth Technik Austria GmbH
Priority to EP19197440.1A priority Critical patent/EP3792463B1/en
Publication of EP3792463A1 publication Critical patent/EP3792463A1/en
Application granted granted Critical
Publication of EP3792463B1 publication Critical patent/EP3792463B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • F01N13/009—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00 having two or more separate purifying devices arranged in series
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • F01N13/14—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00 having thermal insulation
    • F01N13/141—Double-walled exhaust pipes or housings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • F01N13/18—Construction facilitating manufacture, assembly, or disassembly
    • F01N13/1805—Fixing exhaust manifolds, exhaust pipes or pipe sections to each other, to engine or to vehicle body
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • F01N13/18—Construction facilitating manufacture, assembly, or disassembly
    • F01N13/1805—Fixing exhaust manifolds, exhaust pipes or pipe sections to each other, to engine or to vehicle body
    • F01N13/1827—Sealings specially adapted for exhaust systems
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • F01N13/18—Construction facilitating manufacture, assembly, or disassembly
    • F01N13/1838—Construction facilitating manufacture, assembly, or disassembly characterised by the type of connection between parts of exhaust or silencing apparatus, e.g. between housing and tubes, between tubes and baffles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • F01N13/18—Construction facilitating manufacture, assembly, or disassembly
    • F01N13/1838—Construction facilitating manufacture, assembly, or disassembly characterised by the type of connection between parts of exhaust or silencing apparatus, e.g. between housing and tubes, between tubes and baffles
    • F01N13/1844—Mechanical joints
    • F01N13/185—Mechanical joints the connection being realised by deforming housing, tube, baffle, plate, or parts thereof
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2350/00—Arrangements for fitting catalyst support or particle filter element in the housing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2450/00—Methods or apparatus for fitting, inserting or repairing different elements
    • F01N2450/02—Fitting monolithic blocks into the housing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2450/00—Methods or apparatus for fitting, inserting or repairing different elements
    • F01N2450/18—Methods or apparatus for fitting, inserting or repairing different elements by using quick-active type locking mechanisms, e.g. clips
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2450/00—Methods or apparatus for fitting, inserting or repairing different elements
    • F01N2450/30—Removable or rechangeable blocks or cartridges, e.g. for filters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2470/00—Structure or shape of gas passages, pipes or tubes
    • F01N2470/24—Concentric tubes or tubes being concentric to housing, e.g. telescopically assembled
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
    • F01N3/021—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
    • F01N3/021—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
    • F01N3/0211—Arrangements for mounting filtering elements in housing, e.g. with means for compensating thermal expansion or vibration
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
    • F01N3/103—Oxidation catalysts for HC and CO only
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
    • F01N3/18—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control
    • F01N3/20—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control specially adapted for catalytic conversion ; Methods of operation or control of catalytic converters
    • F01N3/2066—Selective catalytic reduction [SCR]
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
    • F01N3/24—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by constructional aspects of converting apparatus
    • F01N3/28—Construction of catalytic reactors
    • F01N3/2839—Arrangements for mounting catalyst support in housing, e.g. with means for compensating thermal expansion or vibration
    • F01N3/2853—Arrangements for mounting catalyst support in housing, e.g. with means for compensating thermal expansion or vibration using mats or gaskets between catalyst body and housing

Definitions

  • the invention is based on an exhaust gas aftertreatment device of an internal combustion engine, according to the preamble of claim 1.
  • the invention also relates to an internal combustion engine and having at least one such exhaust gas aftertreatment device according to claim 10.
  • housings of such exhaust gas aftertreatment devices usually house mufflers, soot filters and/or catalytic converters such as an oxidation catalytic converter and/or a reduction catalytic converter (SCR catalytic converter).
  • an exhaust aftertreatment device is off 2 the US 2003/0159436 A1 known.
  • EP 3 412 879 A1 an exhaust gas aftertreatment device is described, in which a housing shell carrying a particle filter is connected via a clamping connection to a connection piece of a further housing shell, in which no exhaust gas cleaning element is held.
  • Another exhaust aftertreatment device is EP 2 333 259 A1 described. There, an oxidation catalytic converter and a filter element are each held in an inner receiving tube of a housing via mounting mats.
  • Another exhaust aftertreatment device is DE 10 2009 014 425 A1 described. There, a particle filter is held in a jacket via a bearing mat, which jacket is held in an exchangeable manner in a receiving tube.
  • US2003/0159436A1 discloses an exhaust aftertreatment device in which a particle filter is held in a receiving tube which is flanged to a further receiving tube. The use of seals in the area of the flange should be avoided.
  • DE 102 96 366 B4 discloses an exhaust gas aftertreatment device in which a particle filter and a catalytic cleaning element are each held in their own housings, which are connected to one another by a flange connection.
  • U1 discloses an exhaust aftertreatment device in which a particle filter in a housing via a detachable connection with a Nozzle of another housing is connected.
  • WO 2017/116329A1 discloses an exhaust gas aftertreatment device in which a housing of an exhaust gas cleaning component is connected to two sockets of a base housing via two detachable connections.
  • US2006/053779A1 and EP 2 333 259 A1 each describe a generic exhaust gas aftertreatment device.
  • the invention is based on the object of developing an exhaust gas aftertreatment device of the type mentioned at the outset in such a way that it provides improved sealing with simple assembly. Likewise, an internal combustion engine with such an exhaust gas aftertreatment device is to be made available.
  • the invention is based on an exhaust gas aftertreatment device of an internal combustion engine, in particular a motor vehicle or a stationary internal combustion engine, which at least partially removes pollutants from an exhaust gas flow introduced via an exhaust gas inlet opening and then directs it into the atmosphere via an exhaust gas outlet opening and which has a housing with a first receiving pipe provided in which at least one part of a first exhaust gas aftertreatment device comprising a tubular first casing that is separate in relation to the first receiving pipe and a second receiving pipe and at least one first exhaust gas aftertreatment element fixed in particular at least by means of a first mounting mat in the first casing is removably accommodated, and wherein in the second receiving pipe, at least part of a second exhaust gas after-treatment device is received with at least one second exhaust gas after-treatment element, and wherein at least the first receiving pipe and the second receiving pipe are connected to one another by a non-destructively detachable connection in such a way that after the non-destructive detachment of the non-destructively detachable connection, the
  • An exhaust gas aftertreatment element is to be understood as an element through which the quality and/or the quantity and/or the direction of the exhaust gas flow of an internal combustion engine is influenced, in particular with regard to cleaning pollutants contained in the exhaust gas flow and/or by which any other exhaust gas flow influencing function is exercised, e.g. directing the direction of the exhaust gas flow (swirl generation, flow deflection) or mixing the exhaust gas flow with additives such as urea solution or also for soundproofing the noise generated by the exhaust gas flow.
  • the first receiving tube, the second receiving tube, the first jacket and/or the second jacket can be in one piece or in several parts or in several pieces and/or smooth cylindrical and/or stepped in cross section and/or provided with at least one bevel or bend.
  • the cross section can also be arbitrary, for example circular, oval, square, rectangular or polygonal.
  • the first exhaust aftertreatment element performs at least one first function that is different from at least one second function that the second exhaust aftertreatment element performs.
  • the first function can also match the second function if, for example, the first exhaust gas aftertreatment element and the second exhaust gas aftertreatment element are each formed by a particle filter element, an oxidation catalyst element or an SCR reduction catalyst element, so that in this case there is a series connection of exhaust gas aftertreatment elements with the same function.
  • the non-destructively releasable connection is designed in such a way that the at least one first exhaust gas aftertreatment element is always in flow connection with the at least one second exhaust gas aftertreatment element.
  • a first flow cross section formed within the first casing can also have a flow cross section within the second exhaust gas aftertreatment element formed second flow cross-section are in flow communication.
  • the first exhaust aftertreatment device can be removed at least from the first receiving tube and can be repaired, cleaned or replaced by a first replacement exhaust aftertreatment device.
  • a replacement of the first exhaust aftertreatment device may be necessary, for example, if the first exhaust aftertreatment device is formed, for example, by a particle filter device and at least one particle filter element of the particle filter device is clogged with incombustible particles after a certain period of operation and then has to be replaced or cleaned.
  • the first exhaust gas after-treatment device or the first replacement after-treatment device is then inserted at least into the first receiving pipe and the non-destructively releasable connection is then reconnected non-destructively.
  • the second exhaust gas aftertreatment device also comprises a tubular second casing that is separate in relation to the first receiving pipe and the second receiving pipe, as well as a second mounting mat, with the at least one second exhaust gas aftertreatment element being fixed in the second covering in particular by means of the second mounting mat, the at least one part of the second exhaust gas after-treatment device accommodated in the second accommodation pipe is accommodated in a removable manner in the second accommodation pipe.
  • At least one part of the second exhaust gas aftertreatment device can then also be easily removed from the second receiving tube, for example for cleaning, disassembly or maintenance purposes, or accommodated in the second receiving tube for assembly purposes. All that is necessary for this purpose is the release of the in particular single non-destructively releasable connection which is provided between the first receiving tube and the second receiving tube.
  • the first receiving tube is particularly preferably formed at least partially by a first housing shell of the housing and/or the second receiving tube is at least partially formed by a second housing shell of the housing.
  • a housing shell is to be understood as meaning any housing component of the housing of the exhaust gas aftertreatment device, which at least partially houses or accommodates any assembly or any component of the exhaust gas aftertreatment device, through which the quality and/or quantity of the exhaust gas flow is influenced, in particular with regard to pollutants contained therein and/or by which any other function influencing the exhaust gas flow is performed, e.g. directing the exhaust gas flow (swirling, flow deflection) or mixing it with additives such as urea solution or soundproofing the noise generated by the exhaust gas flow.
  • the first housing shell and the second housing shell can be designed in one piece or also in several parts.
  • a first diameter of the first receiving tube can also be essentially identical to a second diameter of the second receiving tube, at least in a region of a parting plane between the first receiving tube and the second receiving tube.
  • first and second diameters are also conceivable.
  • a first center axis of the first receiving tube and the first casing on the one hand and a second center axis of the second receiving tube and the second casing on the other hand are arranged coaxially to one another.
  • the first central axis and the second central axis could also assume an acute angle relative to one another.
  • the at least one second exhaust gas aftertreatment element is in flow connection with the inlet opening and the at least one first exhaust gas aftertreatment element is in flow connection with the outlet opening.
  • the at least one second exhaust gas aftertreatment element can also be in flow connection with the outlet opening and the at least one first exhaust gas aftertreatment element can be in flow connection with the inlet opening.
  • the second exhaust gas aftertreatment device is arranged upstream of the first exhaust gas aftertreatment device or the first exhaust gas aftertreatment device is arranged upstream of the second exhaust gas aftertreatment device, seen in the flow direction of the exhaust gas.
  • a third exhaust gas aftertreatment device of the exhaust gas aftertreatment device can also be provided, which is then arranged upstream or downstream of the first exhaust gas aftertreatment device or the second exhaust gas aftertreatment device, viewed in the flow direction of the exhaust gas.
  • a particularly simple assembly, maintenance and disassembly of the first and second exhaust gas aftertreatment devices result when the non-destructively detachable connection is a single non-destructively detachable connection between the first receiving pipe and the second receiving pipe or between the first and second exhaust aftertreatment devices. Since then only a single non-destructively releasable connection is provided, costs can be saved both during assembly and during disassembly of the exhaust gas aftertreatment device and also in the event of maintenance. Furthermore, in order to release/produce the single non-destructively releasable connection, a corresponding tool must be used at only one point on the exhaust gas aftertreatment device, which is particularly advantageous if other assemblies are arranged in the immediate vicinity of the exhaust gas aftertreatment device.
  • the first exhaust gas after-treatment device is essentially completely in the first intake tube and the second exhaust gas after-treatment device received essentially completely in the second receiving tube.
  • a first end of the first receiving tube and a first end of the first casing as well as a first end of the second receiving tube and a first end of the second casing can each be bent radially outward at an angle.
  • the first end of the first receiving tube and the first end of the first jacket and the first end of the second receiving tube and the first end of the second jacket can together form a wedge-shaped radially outwardly projecting cross-section.
  • outwardly bent first ends can also be bent perpendicularly to the axial direction (central axis) and, for example, can be designed to be planar and flat or as rounded flanges or curls.
  • the non-destructively releasable connection includes a clamping means which clamps the first ends of the first receiving tube and the first casing on the one hand and the first ends of the second receiving tube and the second casing on the other hand at least axially against one another.
  • the clamping means can, for example, have a wedge-shaped inner contour and can overlap the wedge-shaped radially outwardly projecting cross-section with this complementary wedge-shaped inner contour.
  • At least one of the measures described above already forms an axial and radial fixing of the first exhaust gas aftertreatment device and the second exhaust gas aftertreatment device.
  • a second end of the second casing can also strike against a second axial stop of the second receiving tube and/or a second end of the first casing against a first axial stop of the first receiving tube. This also provides for an axial fixation of the first exhaust gas aftertreatment device and the second exhaust gas aftertreatment device.
  • the clamping means can in particular include a clamp which axially clamps the first ends of the first receiving tube and the first casing on the one hand and the first ends of the second receiving tube and the second casing on the other by radial overlap.
  • the clamping means can also include one or more axial screw connections.
  • a first sealing element is arranged between the first receiving tube and the first casing, which seals a first annular gap between the first receiving tube and the first casing, and between the second receiving pipe and the second casing a second sealing element is arranged, which seals a second annular gap between the second receiving tube and the second jacket.
  • the first and second sealing elements prevent exhaust gas from the exhaust gas stream flowing inside the second casing and inside the first casing from entering the first annular gap and/or the second annular gap.
  • a first end of the first receiving tube and a first end of the first jacket are bent radially outwards and the first sealing element is arranged between the first end of the first jacket and the first end of the first receiving tube , and a first end of the second receiving tube and a first end of the second casing bent radially outward, and the second sealing element is arranged between the first end of the second receiving tube and the first end of the second casing.
  • the protruding cross section can protrude, for example, in the shape of a wedge, the cross section decreasing, for example, from radially inside to radially outside.
  • the first exhaust gas aftertreatment device can contain a particle filter device or be formed by such a device, with the first casing containing a particle filter casing and the first exhaust gas aftertreatment element containing a particle filter element, and the second exhaust gas aftertreatment device containing an oxidation catalyst device or being formed by such a device, with the second casing having an oxidation catalyst casing and the second exhaust aftertreatment element includes at least one oxidation catalyst element.
  • the first exhaust gas after-treatment device can contain a particle filter device or be formed by such, with the first casing containing a particle filter casing and the first exhaust gas after-treatment element containing a particle filter element, and the second exhaust gas after-treatment device containing an SCR catalytic converter device or being formed by such a device, with the second casing having a SCR reduction catalyst shell and the second exhaust aftertreatment element includes at least one SCR reduction catalyst element.
  • the invention also relates to an internal combustion engine, for example an internal combustion engine of a motor vehicle or a stationary internal combustion engine with at least one exhaust gas aftertreatment device as described above.
  • an exhaust gas aftertreatment device 1 comprises a housing 2 with, for example, a cylindrical inlet housing 4, which houses or accommodates, for example, an oxidation catalytic converter device 6 as a second exhaust gas aftertreatment device, and with a cylindrical outlet housing 8, for example, which houses or accommodates, for example, a particle filter device 10 as the first exhaust gas aftertreatment device.
  • the outlet housing 8 forms a first receiving tube 14, for example cylindrical, in which the particle filter device 10 is removably received, which has a separate tubular particle filter casing 16 and at least one particle filter element 20 fixed in the particle filter casing 16 at least by means of a first mounting mat 18 includes.
  • the particle filter device 10 is accommodated essentially completely in the first receiving tube 14 .
  • the input housing 4 forms, in particular at its end pointing towards the output housing 8, a cylindrical second receiving tube 22, for example, in which the oxidation catalytic converter device 6 is accommodated, which has a separate tubular oxidation catalytic converter jacket 24 and, for example, an oxidation catalytic converter element 28 fixed in the oxidation catalytic converter jacket 24 by means of a second bearing mat 26 includes.
  • a first end 12 of the first receiving tube 14 points to a first end 30 of the second receiving tube 22, the two first ends 12, 30 being connected to one another by a single, detachable connection 32, for example ( 2 ).
  • the particle filter element 20 is always in flow connection with the oxidation catalytic converter element 28 by means of the detachable connection 32 . Furthermore, there is a first flow cross section available for the exhaust gas within the particle filter jacket 16 with a second flow cross section available for the exhaust gas Flow cross-section within the oxidation catalyst jacket 24 is always in flow communication.
  • a first diameter of the first receiving tube 14 is essentially identical to a second diameter of the second receiving tube 22.
  • a first central axis 36 of the first receiving tube 14 and the particle filter jacket 16 on the one hand and a second central axis 38 of the second receiving tube 22 and of the oxidation catalytic converter jacket 24 on the other hand are arranged coaxially with one another.
  • the parting plane 34 is, for example, perpendicular to the first central axis 36 and to the second central axis 38.
  • the inlet housing 4 has, for example, at its end pointing away from the outlet housing, an exhaust gas inlet opening 40 for the introduction of uncleaned exhaust gases originating, for example, from a diesel internal combustion engine of a motor vehicle, and the outlet housing 8 at its end pointing away from the inlet housing 4 has an exhaust gas outlet opening 42 for discharging the at least pollutants partially cleaned exhaust gases from the outlet housing 8 for further exhaust gas purification or for discharge into the atmosphere.
  • the oxidation catalyst shell 24 has a first end 44 and a second end 46 , just as the particulate filter shell 16 has a first end 48 and a second end 50 .
  • the two first ends 44, 48 of the oxidation catalyst jacket 24 and the particle filter jacket 16 point towards one another, while the second ends 46, 50 point away from one another.
  • a first diameter of the first receiving tube 14 is, for example, essentially identical to a second diameter of the second receiving tube 22.
  • the second end 46 of the oxidation catalyst shell 24 is connected to a second wire mesh ring 52 in the second receiving tube 22 and the second end 50 of the particulate filter shell 16 is connected to a first wire mesh ring 54 in the first receiving tube 14 supported radially.
  • a radial support of the oxidation catalytic converter device 6 and the particle filter device 10 is provided or formed in each case.
  • a first sealing element 56 is arranged in the region of parting plane 34 between first receiving tube 14 and second receiving tube 22 between first end 12 of first receiving tube 14 and first end 48 of particle filter casing 16, which seal element creates a first annular gap 58 between the first receiving tube 14 and the particle filter jacket 16 seals.
  • a second sealing element 60 is arranged between the first end 30 of the second receiving tube 22 and the first end 44 of the oxidation catalyst jacket 24 , which seals a second annular gap 62 between the second receiving tube 22 and the oxidation catalyst jacket 24 .
  • the first and second sealing elements 58, 62 additionally radially fix the oxidation catalytic converter casing 24 and the particle filter casing 16.
  • first end 12 of the first receiving tube 14 and the first end 48 of the particle filter casing 16 are angled radially outward and are bent approximately parallel to one another at least in sections, and in particular the first end 30 of the second receiving tube 22 and the first end 44 of the oxidation catalyst casing 24 are bent in the opposite direction bent radially outward at an angle and parallel to each other.
  • the turning angle is preferably an acute angle.
  • the first end 48 of the particle filter jacket 16 here forms a radially outwardly projecting, for example, wedge-shaped cross section 64 with two axially separate sections 64a, 64b.
  • the first end 12 of the first receiving tube 14 runs parallel to a first section 64a of the projecting cross section 64, which points towards the first receiving tube 14.
  • the first end 44 of the oxidation catalytic converter jacket 24 also runs and the first end 30 of the second receiving tube 22 parallel to a second section 64b of the projecting cross-section 64 pointing towards the second receiving tube 22.
  • a third sealing element 66 is arranged between the first end 44 of the oxidation catalyst jacket 24 and the second section 64b of the projecting cross-section 64, which seals a third annular gap 68 between the first end 44 of the oxidation catalyst shell 24 and the second portion 64b of the projecting cross section 64.
  • the cross section 64 which preferably projects in a wedge shape here, decreases, for example, from radially inside to radially outside.
  • the first end 44 of the oxidation catalytic converter casing 24 can also form a radially outwardly projecting cross section with two sections pointing away from one another axially, in which case the first end 48 of the particle filter casing 16 and the first end 12 of the first receiving tube 14 parallel to a first portion of the protruding cross-section pointing to the first receiving tube 14, and wherein the first end 30 of the second receiving tube 22 runs parallel to a second portion of the protruding cross-section pointing to the second receiving tube 22, and wherein between the first end 48 of the Particle filter casing 16 and the first portion of the projecting cross section then a third sealing element is arranged, which seals a third annular gap between the first end 48 of the particle filter casing 16 and the first portion of the projecting cross section.
  • the releasable connection 32 includes a clamping device which clamps the first ends 12, 48 of the first receiving tube 14 and the particle filter casing 16 on the one hand and the first ends 30, 44 of the second receiving tube 22 and the oxidation catalytic converter casing 24 on the other hand at least axially against one another.
  • a second axial fixation of the oxidation catalytic converter device 6 and the particle filter device 10 is provided or formed.
  • the clamping means here include, for example, a clamp 70, which axially clamps the first ends 12, 48 of the first receiving tube 14 and the particle filter casing 16 on the one hand and the first ends 30, 44 of the second receiving tube 22 and the oxidation catalyst casing 24 on the other by overlapping.
  • the particle filter device 10 can then be removed from the first receiving tube 14 and can either be cleaned of particles or replaced by a replacement particle filter device.
  • a replacement of the particle filter device 10 may be necessary, for example, if the at least one particle filter element is clogged with particles after a certain period of operation.
  • the particle filter device 10 or the replacement particle filter device is inserted into the first receiving tube 14 and the released, detachable connection 32 is then reconnected.
  • the oxidation catalytic converter device 6 can also be easily removed from the second receiving tube 22, for example for dismantling or maintenance purposes, or accommodated in the second receiving tube 22 for assembly purposes. All that is necessary for this is the release of the single detachable connection 32 which is provided between the first end 12 of the first receiving tube 14 and the first end 30 of the second receiving tube 22 . With the release or connection of the detachable connection 32, the first ends 48, 44 of the particle filter casing 16 and the oxidation catalyst casing 24 are also simultaneously detached from one another or connected to one another.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Exhaust Gas After Treatment (AREA)

Description

Die Erfindung geht aus von einer Abgasnachbehandlungsvorrichtung einer Brennkraftmaschine, gemäß dem Oberbegriff von Anspruch 1. Die Erfindung betrifft auch eine Brennkraftmaschine und mit wenigstens einer solchen Abgasnachbehandlungsvorrichtung gemäß Anspruch 10.The invention is based on an exhaust gas aftertreatment device of an internal combustion engine, according to the preamble of claim 1. The invention also relates to an internal combustion engine and having at least one such exhaust gas aftertreatment device according to claim 10.

Gehäuse solcher Abgasnachbehandlungsvorrichtung hausen meist Schalldämpfer, Rußfilter und/oder Katalysatoren wie einen Oxidationskatalysator und/oder einen Reduktionskatalysator (SCR-Katalysator). Eine Abgasnachbehandlungsvorrichtung ist beispielsweise aus Fig. 2 der US 2003/0159436 A1 bekannt. Weiterhin wird in EP 3 412 879 A1 eine Abgasnachbehandlungsvorrichtung beschrieben, bei welcher eine einen Partikelfilter tragende Gehäuseschale über eine Spannverbindung mit einem Stutzen einer weiteren Gehäuseschale verbunden ist, in welchem kein Abgasreinigungselement gehalten ist. Eine weitere Abgasnachbehandlungsvorrichtung wird in EP 2 333 259 A1 beschrieben. Dort werden ein Oxidationskatalysator und ein Filterelement jeweils über Lagermatten in einem inneren Aufnahmerohr eines Gehäuses gehalten. Eine weitere Abgasnachbehandlungsvorrichtung wird in DE 10 2009 014 425 A1 beschrieben. Dort wird ein Partikelfilter über eine Lagermatte in einem Mantel gehalten, welcher in einem Aufnahmerohr auswechselbar gehalten ist. US 2003/0159436A1 offenbart eine Abgasnachbehandlungsvorrichtung, bei welcher ein Partikelfilter in einem Aufnahmerohr gehalten ist, welches an ein weiteres Aufnahmerohr angeflanscht ist. Dabei soll eine Verwendung von Dichtungen im Bereich des Flansches vermieden werden. DE 102 96 366 B4 offenbart eine Abgasnachbehandlungsvorrichtung, bei welcher ein Partikelfilter und ein katalytisches Reinigungsorgan jeweils in eigenen Gehäusen gehalten werden, welche durch eine Flanschverbindung miteinander verbunden sind.Housings of such exhaust gas aftertreatment devices usually house mufflers, soot filters and/or catalytic converters such as an oxidation catalytic converter and/or a reduction catalytic converter (SCR catalytic converter). For example, an exhaust aftertreatment device is off 2 the US 2003/0159436 A1 known. Furthermore, in EP 3 412 879 A1 an exhaust gas aftertreatment device is described, in which a housing shell carrying a particle filter is connected via a clamping connection to a connection piece of a further housing shell, in which no exhaust gas cleaning element is held. Another exhaust aftertreatment device is EP 2 333 259 A1 described. There, an oxidation catalytic converter and a filter element are each held in an inner receiving tube of a housing via mounting mats. Another exhaust aftertreatment device is DE 10 2009 014 425 A1 described. There, a particle filter is held in a jacket via a bearing mat, which jacket is held in an exchangeable manner in a receiving tube. US2003/0159436A1 discloses an exhaust aftertreatment device in which a particle filter is held in a receiving tube which is flanged to a further receiving tube. The use of seals in the area of the flange should be avoided. DE 102 96 366 B4 discloses an exhaust gas aftertreatment device in which a particle filter and a catalytic cleaning element are each held in their own housings, which are connected to one another by a flange connection.

DE 20 2005 001 616 U1 offenbart eine Abgasnachbehandlungsvorrichtung, bei welcher ein Partikelfilter in einem Gehäuse über eine lösbare Verbindung mit einem Stutzen eines weiteren Gehäuses verbunden ist. WO 2017/116329A1 offenbart eine Abgasnachbehandlungsvorrichtung, bei welcher ein Gehäuse einer Abgasreinigungskomponente über zwei lösbare Verbindungen mit zwei Stutzen eines Grundgehäuses verbunden ist. US 2006/053779A1 und EP 2 333 259 A1 beschreiben jeweils eine gattungsgemäße Abgasnachbehandlungsvorrichtung. DE 20 2005 001 616 U1 discloses an exhaust aftertreatment device in which a particle filter in a housing via a detachable connection with a Nozzle of another housing is connected. WO 2017/116329A1 discloses an exhaust gas aftertreatment device in which a housing of an exhaust gas cleaning component is connected to two sockets of a base housing via two detachable connections. US2006/053779A1 and EP 2 333 259 A1 each describe a generic exhaust gas aftertreatment device.

Der Erfindung liegt die Aufgabe zugrunde, eine Abgasnachbehandlungsvorrichtung der eingangserwähnten Art derart fortzubilden, dass sie bei einfacher Montage eine verbesserte Abdichtung zur Verfügung stellt. Ebenso soll eine Brennkraftmaschine mit einer solchen Abgasnachbehandlungsvorrichtung zur Verfügung gestellt werden.The invention is based on the object of developing an exhaust gas aftertreatment device of the type mentioned at the outset in such a way that it provides improved sealing with simple assembly. Likewise, an internal combustion engine with such an exhaust gas aftertreatment device is to be made available.

Diese Aufgabe wird erfindungsgemäß durch die Merkmale von Anspruch 1 und Anspruch 10 gelöst.According to the invention, this object is achieved by the features of claim 1 and claim 10 .

Offenbarung der ErfindungDisclosure of Invention

Die Erfindung geht aus von einer Abgasnachbehandlungsvorrichtung einer Brennkraftmaschine insbesondere eines Kraftfahrzeugs oder einer stationären Brennkraftmaschine, welche einen über eine Abgaseinlassöffnung eingeführten Abgasstrom wenigstens teilweise von Schadstoffen befreit und ihn dann über eine Abgasauslassöffnung in die Atmosphäre leitet und welche ein Gehäuse aufweist, wobei ein erstes Aufnahmerohr vorgesehen ist, in welchem wenigstens ein Teil einer ersten Abgasnachbehandlungseinrichtung umfassend einen in Bezug auf das erste Aufnahmerohr und ein zweites Aufnahmerohr separaten rohrförmigen ersten Mantel und wenigstens ein insbesondere wenigstens mittels einer ersten Lagermatte in dem ersten Mantel fixiertes erstes Abgasnachbehandlungselement entnehmbar aufgenommen ist, und wobei in dem zweiten Aufnahmerohr wenigstens ein Teil einer zweiten Abgasnachbehandlungseinrichtung mit wenigstens einem zweiten Abgasnachbehandlungselement aufgenommen ist, und wobei wenigstens das erste Aufnahmerohr und das zweite Aufnahmerohr durch eine zerstörungsfrei lösbare Verbindung miteinander derart verbunden sind, dass nach einem zerstörungsfreien Lösen der zerstörungsfrei lösbaren Verbindung das erste Aufnahmerohr von dem zweiten Aufnahmerohr trennbar ist.The invention is based on an exhaust gas aftertreatment device of an internal combustion engine, in particular a motor vehicle or a stationary internal combustion engine, which at least partially removes pollutants from an exhaust gas flow introduced via an exhaust gas inlet opening and then directs it into the atmosphere via an exhaust gas outlet opening and which has a housing with a first receiving pipe provided in which at least one part of a first exhaust gas aftertreatment device comprising a tubular first casing that is separate in relation to the first receiving pipe and a second receiving pipe and at least one first exhaust gas aftertreatment element fixed in particular at least by means of a first mounting mat in the first casing is removably accommodated, and wherein in the second receiving pipe, at least part of a second exhaust gas after-treatment device is received with at least one second exhaust gas after-treatment element, and wherein at least the first receiving pipe and the second receiving pipe are connected to one another by a non-destructively detachable connection in such a way that after the non-destructive detachment of the non-destructively detachable connection, the first receiving pipe can be separated from the second receiving tube is separable.

Unter einem Abgasnachbehandlungselement soll ein Element verstanden werden, durch welches die Qualität und/oder die Quantität und/oder die Richtung des Abgasstroms einer Brennkraftmaschine beeinflusst wird, insbesondere im Hinblick auf eine Reinigung von im Abgasstrom enthaltener Schadstoffe und/oder durch welches irgendeine andere den Abgasstrom beeinflussende Funktion ausgeübt wird, z.B. eine Richtungslenkung des Abgasstroms (Drallerzeugung, Strömungsumlenkung) oder den Abgasstrom mit Zusatzstoffen wie Harnstofflösung mischt oder auch zur Schalldämpfung des vom Abgasstrom erzeugten Schalls.An exhaust gas aftertreatment element is to be understood as an element through which the quality and/or the quantity and/or the direction of the exhaust gas flow of an internal combustion engine is influenced, in particular with regard to cleaning pollutants contained in the exhaust gas flow and/or by which any other exhaust gas flow influencing function is exercised, e.g. directing the direction of the exhaust gas flow (swirl generation, flow deflection) or mixing the exhaust gas flow with additives such as urea solution or also for soundproofing the noise generated by the exhaust gas flow.

Das erste Aufnahmerohr, das zweite Aufnahmerohr, der erste Mantel und/oder der zweite Mantel können einstückig oder mehrteilig bzw. mehrstückig und/oder glatt zylindrisch und/oder im Querschnitt gestuft und/oder mit wenigstens einer Schrägung oder Abbiegung versehen sein. Auch kann der Querschnitt beliebig sein, beispielsweise kreisrund, oval quadratisch, rechteckig oder polygonal.The first receiving tube, the second receiving tube, the first jacket and/or the second jacket can be in one piece or in several parts or in several pieces and/or smooth cylindrical and/or stepped in cross section and/or provided with at least one bevel or bend. The cross section can also be arbitrary, for example circular, oval, square, rectangular or polygonal.

Insbesondere übt das erste Abgasnachbehandlungselement wenigstens eine erste Funktion aus, welche von wenigstens einer zweiten Funktion verschieden ist, welche das zweite Abgasnachbehandlungselement ausführt. Dies ist beispielsweise dann der Fall, wenn das erste Abgasnachbehandlungselement durch ein Partikelfilterelement und das zweite Abgasnachbehandlungselement durch ein Oxidationskatalysatorelement oder ein SCR-Reduktionskatalysatorelement gebildet wird. Alternativ kann die erste Funktion auch mit der zweiten Funktion übereinstimmen, wenn beispielsweise das erste Abgasnachbehandlungselement und das zweite Abgasnachbehandlungselement jeweils durch ein Partikelfilterelement, ein Oxidationskatalysatorelement oder ein SCR-Reduktionskatalysatorelement gebildet werden, so dass in diesem Fall eine Reihenschaltung von Abgasnachbehandlungselementen mit gleicher Funktion vorliegt.In particular, the first exhaust aftertreatment element performs at least one first function that is different from at least one second function that the second exhaust aftertreatment element performs. This is the case, for example, when the first exhaust gas aftertreatment element is formed by a particle filter element and the second exhaust gas aftertreatment element is formed by an oxidation catalytic converter element or an SCR reduction catalytic converter element. Alternatively, the first function can also match the second function if, for example, the first exhaust gas aftertreatment element and the second exhaust gas aftertreatment element are each formed by a particle filter element, an oxidation catalyst element or an SCR reduction catalyst element, so that in this case there is a series connection of exhaust gas aftertreatment elements with the same function.

Insbesondere ist die zerstörungsfrei lösbare Verbindung derart ausgeführt, dass das wenigstens eine erste Abgasnachbehandlungselement mit dem wenigstens einen zweiten Abgasnachbehandlungselement stets in Strömungsverbindung steht. Hierzu kann auch ein innerhalb des ersten Mantels ausgebildeter erster Strömungsquerschnitt mit einem innerhalb des zweiten Abgasnachbehandlungselements ausgebildeten zweiten Strömungsquerschnitt in Strömungsverbindung stehen.In particular, the non-destructively releasable connection is designed in such a way that the at least one first exhaust gas aftertreatment element is always in flow connection with the at least one second exhaust gas aftertreatment element. For this purpose, a first flow cross section formed within the first casing can also have a flow cross section within the second exhaust gas aftertreatment element formed second flow cross-section are in flow communication.

Wenigstens nach dem zerstörungsfreien Lösen der zerstörungsfrei lösbaren Verbindung und nach dem Trennen der beiden Aufnahmerohre ist dann die erste Abgasnachbehandlungseinrichtung wenigstens aus dem ersten Aufnahmerohr entnehmbar und kann repariert, gereinigt oder durch eine erste Austausch-Abgasnachbehandlungseinrichtung ersetzt werden. Eine solche Auswechslung der ersten Abgasnachbehandlungseinrichtung kann beispielsweise notwendig sein, wenn die erste Abgasnachbehandlungseinrichtung beispielsweise durch eine Partikelfiltereinrichtung gebildet wird und wenigstens ein Partikelfilterelement der Partikelfiltereinrichtung nach einiger Betriebszeit mit unbrennbaren Partikeln zugesetzt ist und dann ausgetauscht oder gereinigt werden muss. Hierzu wird dann erste Abgasnachbehandlungseinrichtung oder die erste Austausch-Nachbehandlungseinrichtung wenigstens in das erste Aufnahmerohr eingesetzt und dann die gelöste zerstörungsfrei lösbare Verbindung wieder zerstörungsfrei verbunden.At least after the non-destructive detachment of the non-destructively releasable connection and after separating the two receiving tubes, the first exhaust aftertreatment device can be removed at least from the first receiving tube and can be repaired, cleaned or replaced by a first replacement exhaust aftertreatment device. Such a replacement of the first exhaust aftertreatment device may be necessary, for example, if the first exhaust aftertreatment device is formed, for example, by a particle filter device and at least one particle filter element of the particle filter device is clogged with incombustible particles after a certain period of operation and then has to be replaced or cleaned. For this purpose, the first exhaust gas after-treatment device or the first replacement after-treatment device is then inserted at least into the first receiving pipe and the non-destructively releasable connection is then reconnected non-destructively.

Weiterhin ist vorgesehen, dass die zweite Abgasnachbehandlungseinrichtung weiterhin einen in Bezug auf das erste Aufnahmerohr und das zweite Aufnahmerohr separaten rohrförmigen zweiten Mantel sowie eine zweite Lagermatte umfasst, wobei das wenigstens eine zweite Abgasnachbehandlungselement insbesondere mittels der zweiten Lagermatte in dem zweiten Mantel fixiert ist, wobei der wenigstens eine in dem zweiten Aufnahmerohr aufgenommene Teil der zweiten Abgasnachbehandlungseinrichtung in dem zweiten Aufnahmerohr entnehmbar aufgenommen ist.Furthermore, it is provided that the second exhaust gas aftertreatment device also comprises a tubular second casing that is separate in relation to the first receiving pipe and the second receiving pipe, as well as a second mounting mat, with the at least one second exhaust gas aftertreatment element being fixed in the second covering in particular by means of the second mounting mat, the at least one part of the second exhaust gas after-treatment device accommodated in the second accommodation pipe is accommodated in a removable manner in the second accommodation pipe.

Dann ist auch wenigstens ein Teil der zweiten Abgasnachbehandlungseinrichtung dem zweiten Aufnahmerohr beispielsweise zu Reinigungs-, Demontage- oder Wartungszwecken auf einfache Weise entnehmbar bzw. zu Montagezwecken in dem zweiten Aufnahmerohr aufnehmbar. Hierzu ist lediglich das Lösen der insbesondere einzigen zerstörungsfrei lösbaren Verbindung notwendig, welche zwischen dem ersten Aufnahmerohr und dem zweiten Aufnahmerohr vorgesehen ist.At least one part of the second exhaust gas aftertreatment device can then also be easily removed from the second receiving tube, for example for cleaning, disassembly or maintenance purposes, or accommodated in the second receiving tube for assembly purposes. All that is necessary for this purpose is the release of the in particular single non-destructively releasable connection which is provided between the first receiving tube and the second receiving tube.

Dabei kommt es weder auf die die Richtung der Durchströmung der ersten und zweiten Abgasnachbehandlungseinrichtung durch das Abgas noch auf die Reihenfolge der Anordnung zwischen der ersten Abgasnachbehandlungseinrichtung und der zweiten Abgasnachbehandlungseinrichtung in Bezug auf die Strömungsrichtung des Abgases nicht an.Neither the direction in which the exhaust gas flows through the first and second exhaust gas aftertreatment device nor the order in which the first exhaust gas aftertreatment device and the second exhaust gas aftertreatment device are arranged in relation to the flow direction of the exhaust gas is irrelevant.

Besonders bevorzugt wird das erste Aufnahmerohr wenigstens teilweise durch eine erste Gehäuseschale des Gehäuses, und/oder das zweite Aufnahmerohr wird wenigstens teilweise durch eine zweite Gehäuseschale des Gehäuses gebildet.The first receiving tube is particularly preferably formed at least partially by a first housing shell of the housing and/or the second receiving tube is at least partially formed by a second housing shell of the housing.

Unter einer Gehäuseschale ist jegliches Gehäusebauteil des Gehäuses der Abgasnachbehandlungsvorrichtung zu verstehen, welches irgendeine Baugruppe oder irgendein Bauelement der Abgasnachbehandlungsvorrichtung wenigstens teilweise haust oder in sich aufnimmt, durch welches die Qualität und/oder die Quantität des Abgasstroms beeinflusst wird, insbesondere im Hinblick auf darin enthaltene Schadstoffe und/oder durch welches irgendeine andere den Abgasstrom beeinflussende Funktion ausgeübt wird, z.B. eine Richtungslenkung des Abgasstroms (Drallerzeugung, Strömungsumlenkung) oder ihn mit Zusatzstoffen wie Harnstofflösung mischt bzw. Schalldämpfung des vom Abgasstrom erzeugten Schalls. Dabei können die erste Gehäuseschale und die zweite Gehäuseschale einstückig oder auch mehrteilig ausgebildet sein.A housing shell is to be understood as meaning any housing component of the housing of the exhaust gas aftertreatment device, which at least partially houses or accommodates any assembly or any component of the exhaust gas aftertreatment device, through which the quality and/or quantity of the exhaust gas flow is influenced, in particular with regard to pollutants contained therein and/or by which any other function influencing the exhaust gas flow is performed, e.g. directing the exhaust gas flow (swirling, flow deflection) or mixing it with additives such as urea solution or soundproofing the noise generated by the exhaust gas flow. The first housing shell and the second housing shell can be designed in one piece or also in several parts.

Auch kann wenigstens in einem Bereich einer Trennebene zwischen dem ersten Aufnahmerohr und dem zweiten Aufnahmerohr ein erster Durchmesser des ersten Aufnahmerohrs im Wesentlichen identisch mit einem zweiten Durchmesser des zweiten Aufnahmerohrs sein. Es sind aber auch unterschiedlich erste und zweite Durchmesser denkbar.A first diameter of the first receiving tube can also be essentially identical to a second diameter of the second receiving tube, at least in a region of a parting plane between the first receiving tube and the second receiving tube. However, different first and second diameters are also conceivable.

Gemäß einer Weiterbildung sind eine erste Mittelachse des ersten Aufnahmerohrs und des ersten Mantels einerseits und eine zweite Mittelachse des zweiten Aufnahmerohrs und des zweiten Mantels andererseits koaxial zueinander angeordnet. Alternativ könnten die erste Mittelachse und die zweite Mittelachse auch einen spitzen Winkel relativ zueinander einnehmen.According to a further development, a first center axis of the first receiving tube and the first casing on the one hand and a second center axis of the second receiving tube and the second casing on the other hand are arranged coaxially to one another. Alternatively, the first central axis and the second central axis could also assume an acute angle relative to one another.

Weiterbildend kann auch vorgesehen sein, dass das wenigstens eine zweite Abgasnachbehandlungselement mit der Einlassöffnung und das wenigstens eine erste Abgasnachbehandlungselement mit der Auslassöffnung in Strömungsverbindung steht. Alternativ kann natürlich auch das wenigstens eine zweite Abgasnachbehandlungselement mit der Auslassöffnung und das wenigstens eine erste Abgasnachbehandlungselement mit der Einlassöffnung in Strömungsverbindung stehen.In a further development, it can also be provided that the at least one second exhaust gas aftertreatment element is in flow connection with the inlet opening and the at least one first exhaust gas aftertreatment element is in flow connection with the outlet opening. Alternatively, of course, the at least one second exhaust gas aftertreatment element can also be in flow connection with the outlet opening and the at least one first exhaust gas aftertreatment element can be in flow connection with the inlet opening.

Dann ist in Strömungsrichtung des Abgases gesehen die zweite Abgasnachbehandlungseinrichtung der ersten Abgasnachbehandlungseinrichtung vorgeordnet oder die erste Abgasnachbehandlungseinrichtung ist der zweiten Abgasnachbehandlungseinrichtung in Strömungsrichtung des Abgases gesehen vorgeordnet. Zusätzlich kann auch noch eine dritte Abgasnachbehandlungseinrichtung der Abgasnachbehandlungsvorrichtung vorgesehen sein, welche dann in Strömungsrichtung des Abgases gesehen der ersten Abgasnachbehandlungseinrichtung oder der zweiten Abgasnachbehandlungseinrichtung vor- oder nachgeordnet ist.Then, seen in the flow direction of the exhaust gas, the second exhaust gas aftertreatment device is arranged upstream of the first exhaust gas aftertreatment device or the first exhaust gas aftertreatment device is arranged upstream of the second exhaust gas aftertreatment device, seen in the flow direction of the exhaust gas. In addition, a third exhaust gas aftertreatment device of the exhaust gas aftertreatment device can also be provided, which is then arranged upstream or downstream of the first exhaust gas aftertreatment device or the second exhaust gas aftertreatment device, viewed in the flow direction of the exhaust gas.

Eine besondere einfache Montage, Wartung und Demontage der ersten und zweiten Abgasnachbehandlungseinrichtung ergeben sich, wenn die zerstörungsfrei lösbare Verbindung eine einzige zerstörungsfrei lösbare Verbindung zwischen dem ersten Aufnahmerohr und dem zweiten Aufnahmerohr oder zwischen der ersten und zweiten Abgasnachbehandlungseinrichtung darstellt. Da dann lediglich eine einzige zerstörungsfrei lösbare Verbindung vorgesehen ist, lassen sich Kosten einsparen, sowohl bei der Montage als auch bei der Demontage der Abgasnachbehandlungsvorrichtung sowie auch im Wartungsfall. Weiterhin muss zum Lösen/Herstellen der einzigen zerstörungsfrei lösbaren Verbindung entsprechendes Werkzeug an nur einer Stelle der Abgasnachbehandlungsvorrichtung eingesetzt werden, was besonders vorteilhaft ist, wenn in der unmittelbaren Nachbarschaft der Abgasnachbehandlungsvorrichtung noch weitere Baugruppen angeordnet sind.A particularly simple assembly, maintenance and disassembly of the first and second exhaust gas aftertreatment devices result when the non-destructively detachable connection is a single non-destructively detachable connection between the first receiving pipe and the second receiving pipe or between the first and second exhaust aftertreatment devices. Since then only a single non-destructively releasable connection is provided, costs can be saved both during assembly and during disassembly of the exhaust gas aftertreatment device and also in the event of maintenance. Furthermore, in order to release/produce the single non-destructively releasable connection, a corresponding tool must be used at only one point on the exhaust gas aftertreatment device, which is particularly advantageous if other assemblies are arranged in the immediate vicinity of the exhaust gas aftertreatment device.

Gemäß einer Ausführungsform ist die erste Abgasnachbehandlungseinrichtung im Wesentlichen vollständig in dem ersten Aufnahmerohr und die zweite Abgasnachbehandlungseinrichtung im Wesentlichen vollständig in dem zweiten Aufnahmerohr aufgenommen.According to one embodiment, the first exhaust gas after-treatment device is essentially completely in the first intake tube and the second exhaust gas after-treatment device received essentially completely in the second receiving tube.

Gemäß einer Weiterbildung können ein erstes Ende des ersten Aufnahmerohrs und ein erstes Ende des ersten Mantels sowie ein erstes Ende des zweiten Aufnahmerohrs und ein erstes Ende des zweiten Mantels insbesondere jeweils schräg nach radial außen abgebogen sein. Insbesondere können das erste Ende des ersten Aufnahmerohrs und das erste Ende des ersten Mantels sowie das erste Ende des zweiten Aufnahmerohrs und das erste Ende des zweiten Mantels zusammen einen keilförmig nach radial außen vorspringenden Querschnitt ausbilden.According to a further development, a first end of the first receiving tube and a first end of the first casing as well as a first end of the second receiving tube and a first end of the second casing can each be bent radially outward at an angle. In particular, the first end of the first receiving tube and the first end of the first jacket and the first end of the second receiving tube and the first end of the second jacket can together form a wedge-shaped radially outwardly projecting cross-section.

Die nach außen abgebogenen ersten Enden können aber auch senkrecht zur Axialrichtung (Mittelachse) abgebogen sowie beispielsweise eben und flach ausgebildet sein oder auch als verrundete Bördelungen oder Einrollungen.However, the outwardly bent first ends can also be bent perpendicularly to the axial direction (central axis) and, for example, can be designed to be planar and flat or as rounded flanges or curls.

Die zerstörungsfrei lösbare Verbindung beinhaltet ein Spannmittel, welches die ersten Enden des ersten Aufnahmerohrs und des ersten Mantels einerseits und die ersten Enden des zweiten Aufnahmerohrs und des zweiten Mantels andererseits wenigstens axial gegeneinander spannt.The non-destructively releasable connection includes a clamping means which clamps the first ends of the first receiving tube and the first casing on the one hand and the first ends of the second receiving tube and the second casing on the other hand at least axially against one another.

Dabei kann das Spannmittel beispielsweise eine keilförmig ausgebildete Innenkontur aufweisen und den keilförmig nach radial außen vorspringenden Querschnitt mit dieser komplementär keilförmig ausgebildeten Innenkontur übergreifen.The clamping means can, for example, have a wedge-shaped inner contour and can overlap the wedge-shaped radially outwardly projecting cross-section with this complementary wedge-shaped inner contour.

Durch wenigstens eine der oben beschriebenen Maßnahmen wird bereits eine axiale und radiale Festlegung der ersten Abgasnachbehandlungseinrichtung und der zweiten Abgasnachbehandlungseinrichtung ausgebildet.At least one of the measures described above already forms an axial and radial fixing of the first exhaust gas aftertreatment device and the second exhaust gas aftertreatment device.

Zusätzlich oder alternativ hierzu kann (können) auch ein zweites Ende des zweiten Mantels gegen einen zweiten axialen Anschlag des zweiten Aufnahmerohrs und/oder ein zweites Ende des ersten Mantels gegen einen ersten axialen Anschlag des ersten Aufnahmerohrs axial anschlagen. Dadurch wird ebenfalls eine axiale Festlegung der ersten Abgasnachbehandlungseinrichtung und der zweiten Abgasnachbehandlungseinrichtung vorgesehen.In addition or as an alternative to this, a second end of the second casing can also strike against a second axial stop of the second receiving tube and/or a second end of the first casing against a first axial stop of the first receiving tube. This also provides for an axial fixation of the first exhaust gas aftertreatment device and the second exhaust gas aftertreatment device.

Das Spannmittel kann insbesondere eine Spannschelle beinhalten, welche die ersten Enden des ersten Aufnahmerohrs und des ersten Mantels einerseits und die ersten Enden des zweiten Aufnahmerohrs und des zweiten Mantels andererseits durch radialen Übergriff axial gegeneinander spannt. Alternativ oder zusätzlich kann das Spannmittel auch eine oder mehrere axiale Verschraubungen umfassen.The clamping means can in particular include a clamp which axially clamps the first ends of the first receiving tube and the first casing on the one hand and the first ends of the second receiving tube and the second casing on the other by radial overlap. Alternatively or additionally, the clamping means can also include one or more axial screw connections.

Wenigstens im Bereich einer Trennebene zwischen dem ersten Aufnahmerohr und dem zweiten Aufnahmerohr ist zwischen dem ersten Aufnahmerohr und dem ersten Mantel ein erstes Dichtungselement angeordnet, welches einen ersten Ringspalt zwischen dem ersten Aufnahmerohr und dem ersten Mantel abdichtet, und zwischen dem zweiten Aufnahmerohr und dem zweiten Mantel ist ein zweites Dichtungselement angeordnet, welches einen zweiten Ringspalt zwischen dem zweiten Aufnahmerohr und dem zweiten Mantel abdichtet. Mit dem ersten und zweiten Dichtungselement wird verhindert, dass von innerhalb des zweiten Mantels und innerhalb des ersten Mantels strömendem Abgasstrom Abgas in den ersten Ringspalt und/oder in den zweiten Ringspalt gerät.At least in the region of a parting plane between the first receiving tube and the second receiving tube, a first sealing element is arranged between the first receiving tube and the first casing, which seals a first annular gap between the first receiving tube and the first casing, and between the second receiving pipe and the second casing a second sealing element is arranged, which seals a second annular gap between the second receiving tube and the second jacket. The first and second sealing elements prevent exhaust gas from the exhaust gas stream flowing inside the second casing and inside the first casing from entering the first annular gap and/or the second annular gap.

Außerdem ist im Bereich der Trennebene zwischen dem ersten Aufnahmerohr und dem zweiten Aufnahmerohr ein erstes Ende des ersten Aufnahmerohrs sowie ein erstes Ende des ersten Mantels nach radial außen abgebogen und das erste Dichtungselement zwischen dem ersten Ende des ersten Mantels und dem ersten Ende des ersten Aufnahmerohrs angeordnet, und ein erstes Ende des zweiten Aufnahmerohrs sowie ein erstes Ende des zweiten Mantels nach radial außen abgebogen, und das zweite Dichtungselement zwischen dem ersten Ende des zweiten Aufnahmerohrs und dem ersten Ende des zweiten Mantels angeordnet.In addition, in the region of the parting plane between the first receiving tube and the second receiving tube, a first end of the first receiving tube and a first end of the first jacket are bent radially outwards and the first sealing element is arranged between the first end of the first jacket and the first end of the first receiving tube , and a first end of the second receiving tube and a first end of the second casing bent radially outward, and the second sealing element is arranged between the first end of the second receiving tube and the first end of the second casing.

Weiterhin ist vorgesehen, dass

  1. a) das erste Ende des ersten Mantels einen nach radial außen vorspringenden Querschnitt mit zwei axial voneinander weg weisenden Abschnitten ausbildet und dass das erste Ende des ersten Aufnahmerohrs parallel zu einem zu dem ersten Aufnahmerohr weisenden ersten Abschnitt des vorspringenden Querschnitts verläuft, und dass das erste Ende des zweiten Mantels und das erste Ende des zweiten Aufnahmerohrs parallel zu einem zu dem zweiten Aufnahmerohr weisenden zweiten Abschnitt des vorspringenden Querschnitts verlaufen, wobei zwischen dem ersten Ende des zweiten Mantels und dem zweiten Abschnitt des vorspringenden Querschnitts ein drittes Dichtungselement angeordnet ist, welches einen dritten Ringspalt zwischen dem ersten Ende des zweiten Mantels und dem zweiten Abschnitt des vorspringenden Querschnitts abdichtet, oder dass
  2. b) das erste Ende des zweiten Mantels einen nach radial außen vorspringenden Querschnitt mit zwei axial voneinander weg weisenden Abschnitten ausbildet, und dass das erste Ende des ersten Mantels und das erste Ende des ersten Aufnahmerohrs parallel zu einem zu dem ersten Aufnahmerohr weisenden ersten Abschnitt des vorspringenden Querschnitts verlaufen, und dass das erste Ende des zweiten Aufnahmerohrs parallel zu einem zu dem zweiten Aufnahmerohr weisenden zweiten Abschnitt des vorspringenden Querschnitts verläuft, wobei zwischen dem ersten Ende des ersten Mantels und dem ersten Abschnitt des vorspringenden Querschnitts ein drittes Dichtungselement angeordnet ist, welches einen dritten Ringspalt zwischen dem ersten Ende des ersten Mantels und dem ersten Abschnitt des vorspringenden Querschnitts abdichtet.
Furthermore, it is provided that
  1. a) the first end of the first jacket forms a radially outwardly projecting cross-section with two sections pointing axially away from one another and that the first end of the first receiving tube runs parallel to a first section of the projecting cross-section pointing towards the first receiving tube, and that the first end of the second shell and the first end of the second pick-up tube parallel to one of the second pick-up tube pointing second section of the projecting cross section, a third sealing element being arranged between the first end of the second shell and the second section of the projecting cross section, which seals a third annular gap between the first end of the second shell and the second section of the projecting cross section, or that
  2. b) the first end of the second jacket forms a radially outwardly projecting cross-section with two sections pointing axially away from one another, and that the first end of the first jacket and the first end of the first receiving tube are parallel to a first section of the projecting section pointing towards the first receiving tube cross-section, and that the first end of the second receiving tube runs parallel to a second section of the projecting cross-section pointing towards the second receiving tube, a third sealing element being arranged between the first end of the first jacket and the first section of the projecting cross-section, which has a third Annular gap between the first end of the first shell and the first portion of the projecting cross-section seals.

Dabei kann der vorspringende Querschnitt beispielsweise keilförmig vorspringen, wobei der Querschnitt beispielsweise von radial innen nach radial außen hin abnimmt.The protruding cross section can protrude, for example, in the shape of a wedge, the cross section decreasing, for example, from radially inside to radially outside.

Bevorzugt kann die erste Abgasnachbehandlungseinrichtung eine Partikelfiltereinrichtung beinhalten oder durch eine solche gebildet werden, wobei der erste Mantel einen Partikelfiltermantel und das erste Abgasnachbehandlungselement ein Partikelfilterelement beinhaltet, und die zweite Abgasnachbehandlungseinrichtung eine Oxidationskatalysatoreinrichtung beinhalten oder durch eine solche gebildet werden, wobei der zweite Mantel einen Oxidationskatalysatormantel und das zweite Abgasnachbehandlungselement wenigstens ein Oxidationskatalysatorelement beinhaltet.Preferably, the first exhaust gas aftertreatment device can contain a particle filter device or be formed by such a device, with the first casing containing a particle filter casing and the first exhaust gas aftertreatment element containing a particle filter element, and the second exhaust gas aftertreatment device containing an oxidation catalyst device or being formed by such a device, with the second casing having an oxidation catalyst casing and the second exhaust aftertreatment element includes at least one oxidation catalyst element.

Alternativ kann die erste Abgasnachbehandlungseinrichtung eine Partikelfiltereinrichtung beinhalten oder durch eine solche gebildet werdet, wobei der erste Mantel einen Partikelfiltermantel und das erste Abgasnachbehandlungselement ein Partikelfilterelement beinhaltet, und die zweite Abgasnachbehandlungseinrichtung eine SCR-Katalysatoreinrichtung beinhalten oder durch eine solche gebildet werden, wobei der zweite Mantel einen SCR-Reduktionskatalysatormantel und das zweite Abgasnachbehandlungselement wenigstens ein SCR-Reduktionskatalysatorelement beinhaltet.Alternatively, the first exhaust gas after-treatment device can contain a particle filter device or be formed by such, with the first casing containing a particle filter casing and the first exhaust gas after-treatment element containing a particle filter element, and the second exhaust gas after-treatment device containing an SCR catalytic converter device or being formed by such a device, with the second casing having a SCR reduction catalyst shell and the second exhaust aftertreatment element includes at least one SCR reduction catalyst element.

Die Erfindung betrifft auch mit eine Brennkraftmaschine, beispielsweise eine Brennkraftmaschine eines Kraftfahrzeugs oder eine stationäre Brennkraftmaschine mit wenigstens einer oben beschriebenen Abgasnachbehandlungsvorrichtung.The invention also relates to an internal combustion engine, for example an internal combustion engine of a motor vehicle or a stationary internal combustion engine with at least one exhaust gas aftertreatment device as described above.

Zeichnungendrawings

Ausführungsbeispiele der Erfindung sind in der Zeichnung dargestellt und in der nachfolgenden Beschreibung näher erläutert. In der Zeichnung zeigt

Fig. 1
eine Schnittdarstellung einer bevorzugten Ausführungsform einer Abgasnachbehandlungsvorrichtung gemäß der Erfindung;
Fig. 2
einen vergrößerten Ausschnitt von Fig.1;
Fig. 3
eine Explosionszeichnung der Abgasnachbehandlungsvorrichtung von Fig. 1.
Embodiments of the invention are shown in the drawing and explained in more detail in the following description. In the drawing shows
1
a sectional view of a preferred embodiment of an exhaust gas aftertreatment device according to the invention;
2
an enlarged section of Fig.1 ;
3
an exploded view of the exhaust aftertreatment device from 1 .

Beschreibung der AusführungsbeispieleDescription of the exemplary embodiments

In einem bevorzugten Ausführungsbeispiel nach Fig. 1 bis Fig. 3 umfasst eine Abgasnachbehandlungsvorrichtung 1 ein Gehäuse 2 mit einem beispielsweise zylindrischen Eingangsgehäuse 4, welches beispielsweise eine Oxidationskatalysatoreinrichtung 6 als zweite Abgasnachbehandlungseinrichtung haust oder aufnimmt und mit einem beispielsweise zylindrischen Ausgangsgehäuse 8, welches beispielsweise eine Partikelfiltereinrichtung 10 als erste Abgasnachbehandlungseinrichtung haust oder aufnimmt.In a preferred embodiment Figures 1 to 3 an exhaust gas aftertreatment device 1 comprises a housing 2 with, for example, a cylindrical inlet housing 4, which houses or accommodates, for example, an oxidation catalytic converter device 6 as a second exhaust gas aftertreatment device, and with a cylindrical outlet housing 8, for example, which houses or accommodates, for example, a particle filter device 10 as the first exhaust gas aftertreatment device.

Das Ausgangsgehäuse 8 bildet wenigstens an seinem zum Eingangsgehäuse weisenden Ende ein beispielsweise zylindrisches erstes Aufnahmerohr 14 aus, in welchem die Partikelfiltereinrichtung 10 entnehmbar aufgenommen ist, welche einen separaten rohrförmigen Partikelfiltermantel 16 und wenigstens ein wenigstens mittels einer ersten Lagermatte 18 in dem Partikelfiltermantel 16 fixiertes Partikelfilterelement 20 umfasst. Hier ist beispielsweise die Partikelfiltereinrichtung 10 im Wesentlichen vollständig in dem ersten Aufnahmerohr 14 aufgenommen.At least at its end pointing towards the input housing, the outlet housing 8 forms a first receiving tube 14, for example cylindrical, in which the particle filter device 10 is removably received, which has a separate tubular particle filter casing 16 and at least one particle filter element 20 fixed in the particle filter casing 16 at least by means of a first mounting mat 18 includes. Here, for example, the particle filter device 10 is accommodated essentially completely in the first receiving tube 14 .

Weiterhin bildet das Eingangsgehäuse 4 insbesondere an seinem zum Ausgangsgehäuse 8 weisenden Ende ein beispielsweise zylindrisches zweites Aufnahmerohr 22 aus, in welchem die Oxidationskatalysatoreinrichtung 6 aufgenommen ist, welche einen separaten rohrförmigen Oxidationskatalysatormantel 24 und beispielsweise ein mittels einer zweiten Lagermatte 26 in dem Oxidationskatalysatormantel 24 fixiertes Oxidationskatalysatorelement 28 umfasst. Ein erstes Ende 12 des ersten Aufnahmerohrs 14 weist auf ein erstes Ende 30 des zweiten Aufnahmerohrs 22 zu, wobei die beiden ersten Enden 12, 30 durch eine beispielsweise einzige lösbare Verbindung 32 miteinander verbunden sind ( Fig. 2 ). Furthermore, the input housing 4 forms, in particular at its end pointing towards the output housing 8, a cylindrical second receiving tube 22, for example, in which the oxidation catalytic converter device 6 is accommodated, which has a separate tubular oxidation catalytic converter jacket 24 and, for example, an oxidation catalytic converter element 28 fixed in the oxidation catalytic converter jacket 24 by means of a second bearing mat 26 includes. A first end 12 of the first receiving tube 14 points to a first end 30 of the second receiving tube 22, the two first ends 12, 30 being connected to one another by a single, detachable connection 32, for example ( 2 ).

Mittels der lösbaren Verbindung 32 steht das Partikelfilterelement 20 mit dem Oxidationskatalysatorelement 28 stets in Strömungsverbindung. Weiterhin steht ein erster für das Abgas zur Verfügung stehender Strömungsquerschnitt innerhalb des Partikelfiltermantels 16 mit einem zweiten für das Abgas zur Verfügung stehenden Strömungsquerschnitt innerhalb des Oxidationskatalysatormantels 24 stets in Strömungsverbindung.The particle filter element 20 is always in flow connection with the oxidation catalytic converter element 28 by means of the detachable connection 32 . Furthermore, there is a first flow cross section available for the exhaust gas within the particle filter jacket 16 with a second flow cross section available for the exhaust gas Flow cross-section within the oxidation catalyst jacket 24 is always in flow communication.

In einem Bereich einer Trennebene 34 zwischen dem ersten Aufnahmerohr 14 und dem zweiten Aufnahmerohr 22 ist ein erster Durchmesser des ersten Aufnahmerohrs 14 im Wesentlichen identisch mit einem zweiten Durchmesser des zweiten Aufnahmerohrs 22. Weiterhin sind beispielsweise eine erste Mittelachse 36 des ersten Aufnahmerohrs 14 und des Partikelfiltermantels 16 einerseits und eine zweite Mittelachse 38 des zweiten Aufnahmerohrs 22 und des Oxidationskatalysatormantels 24 andererseits koaxial zueinander angeordnet. Die Trennebene 34 ist beispielsweise senkrecht zur ersten Mittelachse 36 und zur zweiten Mittelachse 38.In a region of a parting plane 34 between the first receiving tube 14 and the second receiving tube 22, a first diameter of the first receiving tube 14 is essentially identical to a second diameter of the second receiving tube 22. Furthermore, for example, a first central axis 36 of the first receiving tube 14 and the particle filter jacket 16 on the one hand and a second central axis 38 of the second receiving tube 22 and of the oxidation catalytic converter jacket 24 on the other hand are arranged coaxially with one another. The parting plane 34 is, for example, perpendicular to the first central axis 36 and to the second central axis 38.

Das Eingangsgehäuse 4 weist beispielsweise an seinem vom Ausgangsgehäuse weg weisenden Ende eine Abgaseinlassöffnung 40 zur Einleitung von beispielsweise aus einer Diesel-Brennkraftmaschine eines Kraftfahrzeugs stammenden ungereinigten Abgasen und das Ausgangsgehäuse 8 an seinem vom Eingangsgehäuse 4 weg weisenden Ende eine Abgasauslassöffnung 42 zur Ableitung der von Schadstoffen wenigstens teilweise gereinigten Abgase aus dem Ausgangsgehäuse 8 zur weiteren Abgasreinigung oder zur Ableitung in die Atmosphäre auf.The inlet housing 4 has, for example, at its end pointing away from the outlet housing, an exhaust gas inlet opening 40 for the introduction of uncleaned exhaust gases originating, for example, from a diesel internal combustion engine of a motor vehicle, and the outlet housing 8 at its end pointing away from the inlet housing 4 has an exhaust gas outlet opening 42 for discharging the at least pollutants partially cleaned exhaust gases from the outlet housing 8 for further exhaust gas purification or for discharge into the atmosphere.

Der Oxidationskatalysatormantel 24 weist ein erstes Ende 44 und ein zweites Ende 46 auf, wie auch der Partikelfiltermantel 16 ein erstes Ende 48 und ein zweites Ende 50 aufweist. Dabei weisen die beiden ersten Enden 44, 48 des Oxidationskatalysatormantels 24 und des Partikelfiltermantels 16 aufeinander zu während die zweiten Enden 46, 50 voneinander wegweisen. Weiterhin ist ein erster Durchmesser des ersten Aufnahmerohrs 14 beispielsweise im Wesentlichen identisch mit einem zweiten Durchmesser des zweiten Aufnahmerohrs 22.The oxidation catalyst shell 24 has a first end 44 and a second end 46 , just as the particulate filter shell 16 has a first end 48 and a second end 50 . The two first ends 44, 48 of the oxidation catalyst jacket 24 and the particle filter jacket 16 point towards one another, while the second ends 46, 50 point away from one another. Furthermore, a first diameter of the first receiving tube 14 is, for example, essentially identical to a second diameter of the second receiving tube 22.

Das zweite Ende 46 des Oxidationskatalysatormantels 24 ist mit einem zweiten Drahtgestrickring 52 im zweiten Aufnahmerohrs 22 und das zweite Ende 50 des Partikelfiltermantels 16 mit einem ersten Drahtgestrickring 54 im ersten Aufnahmerohrs 14 radial abgestützt. Dadurch wird jeweils eine radiale Abstützung der Oxidationskatalysatoreinrichtung 6 und der Partikelfiltereinrichtung 10 vorgesehen oder ausgebildet.The second end 46 of the oxidation catalyst shell 24 is connected to a second wire mesh ring 52 in the second receiving tube 22 and the second end 50 of the particulate filter shell 16 is connected to a first wire mesh ring 54 in the first receiving tube 14 supported radially. As a result, a radial support of the oxidation catalytic converter device 6 and the particle filter device 10 is provided or formed in each case.

Wie insbesondere Fig. 2 zeigt, ist im Bereich der Trennebene 34 zwischen dem ersten Aufnahmerohr 14 und dem zweiten Aufnahmerohr 22 zwischen dem ersten Ende 12 des ersten Aufnahmerohrs 14 und dem ersten Ende 48 des Partikelfiltermantels 16 ein erstes Dichtungselement 56 angeordnet, welches einen ersten Ringspalt 58 zwischen dem ersten Aufnahmerohr 14 und dem Partikelfiltermantel 16 abdichtet.How in particular 2 shows, a first sealing element 56 is arranged in the region of parting plane 34 between first receiving tube 14 and second receiving tube 22 between first end 12 of first receiving tube 14 and first end 48 of particle filter casing 16, which seal element creates a first annular gap 58 between the first receiving tube 14 and the particle filter jacket 16 seals.

Darüber hinaus ist zwischen dem ersten Ende 30 des zweiten Aufnahmerohrs 22 und dem ersten Ende 44 des Oxidationskatalysatormantels 24 ein zweites Dichtungselement 60 angeordnet, welches einen zweiten Ringspalt 62 zwischen dem zweiten Aufnahmerohr 22 und dem Oxidationskatalysatormantel 24 abdichtet.In addition, a second sealing element 60 is arranged between the first end 30 of the second receiving tube 22 and the first end 44 of the oxidation catalyst jacket 24 , which seals a second annular gap 62 between the second receiving tube 22 and the oxidation catalyst jacket 24 .

Durch die ersten und zweiten Dichtungselemente 58, 62 werden der Oxidationskatalysatormantel 24 und der Partikelfiltermantel 16 zusätzlich radial festgelegt.The first and second sealing elements 58, 62 additionally radially fix the oxidation catalytic converter casing 24 and the particle filter casing 16.

Insbesondere sind das erste Ende 12 des ersten Aufnahmerohrs 14 sowie das erste Ende 48 des Partikelfiltermantels 16 nach radial außen winkelig und wenigstens abschnittsweise etwa parallel zueinander abgebogen, und insbesondere gegenläufig hierzu das erste Ende 30 des zweiten Aufnahmerohrs 22 sowie das erste Ende 44 des Oxidationskatalysatormantels 24 nach radial außen winkelig und parallel zueinander abgebogen. Dabei ist der Abbiegewinkel jeweils bevorzugt ein spitzer Winkel.In particular, the first end 12 of the first receiving tube 14 and the first end 48 of the particle filter casing 16 are angled radially outward and are bent approximately parallel to one another at least in sections, and in particular the first end 30 of the second receiving tube 22 and the first end 44 of the oxidation catalyst casing 24 are bent in the opposite direction bent radially outward at an angle and parallel to each other. In this case, the turning angle is preferably an acute angle.

Beispielsweise das erste Ende 48 des Partikelfiltermantels 16 bildet hier einen nach radial außen beispielsweise keilförmig vorspringenden Querschnitt 64 mit zwei axial voneinander getrennten Abschnitten 64a, 64b aus. Dabei verläuft das erste Ende 12 des ersten Aufnahmerohrs 14 parallel zu einem zu dem ersten Aufnahmerohr 14 weisenden ersten Abschnitt 64a des vorspringenden Querschnitts 64. Weiterhin verlaufen das erste Ende 44 des Oxidationskatalysatormantels 24 und das erste Ende 30 des zweiten Aufnahmerohrs 22 parallel zu einem zu dem zweiten Aufnahmerohr 22 weisenden zweiten Abschnitt 64b des vorspringenden Querschnitts 64. Zwischen dem ersten Ende 44 des Oxidationskatalysatormantels 24 und dem zweiten Abschnitt 64b des vorspringenden Querschnitts 64 ist ein drittes Dichtungselement 66 angeordnet, welches einen dritten Ringspalt 68 zwischen dem ersten Ende 44 des Oxidationskatalysatormantels 24 und dem zweiten Abschnitt 64b des vorspringenden Querschnitts 64 abdichtet. Der hier bevorzugt keilförmig vorspringende Querschnitt 64 nimmt beispielsweise von radial innen nach radial außen hin ab.For example, the first end 48 of the particle filter jacket 16 here forms a radially outwardly projecting, for example, wedge-shaped cross section 64 with two axially separate sections 64a, 64b. The first end 12 of the first receiving tube 14 runs parallel to a first section 64a of the projecting cross section 64, which points towards the first receiving tube 14. The first end 44 of the oxidation catalytic converter jacket 24 also runs and the first end 30 of the second receiving tube 22 parallel to a second section 64b of the projecting cross-section 64 pointing towards the second receiving tube 22. A third sealing element 66 is arranged between the first end 44 of the oxidation catalyst jacket 24 and the second section 64b of the projecting cross-section 64, which seals a third annular gap 68 between the first end 44 of the oxidation catalyst shell 24 and the second portion 64b of the projecting cross section 64. The cross section 64, which preferably projects in a wedge shape here, decreases, for example, from radially inside to radially outside.

Gemäß einer zweiten, hier nicht dargestellten Ausführungsform kann auch das erste Ende 44 des Oxidationskatalysatormantels 24 einen nach radial außen vorspringenden Querschnitt mit zwei axial voneinander weg weisenden Abschnitten ausbilden, wobei dann das erste Ende 48 des Partikelfiltermantels 16 und das erste Ende 12 des ersten Aufnahmerohrs 14 parallel zu einem zu dem ersten Aufnahmerohr 14 weisenden ersten Abschnitt des vorspringenden Querschnitts verlaufen, und wobei das erste Ende 30 des zweiten Aufnahmerohrs 22 parallel zu einem zu dem zweiten Aufnahmerohr 22 weisenden zweiten Abschnitt des vorspringenden Querschnitts verläuft, und wobei zwischen dem ersten Ende 48 des Partikelfiltermantels 16 und dem ersten Abschnitt des vorspringenden Querschnitts dann ein drittes Dichtungselement angeordnet ist, welches einen dritten Ringspalt zwischen dem ersten Ende 48 des Partikelfiltermantels 16 und dem ersten Abschnitt des vorspringenden Querschnitts abdichtet.According to a second embodiment, not shown here, the first end 44 of the oxidation catalytic converter casing 24 can also form a radially outwardly projecting cross section with two sections pointing away from one another axially, in which case the first end 48 of the particle filter casing 16 and the first end 12 of the first receiving tube 14 parallel to a first portion of the protruding cross-section pointing to the first receiving tube 14, and wherein the first end 30 of the second receiving tube 22 runs parallel to a second portion of the protruding cross-section pointing to the second receiving tube 22, and wherein between the first end 48 of the Particle filter casing 16 and the first portion of the projecting cross section then a third sealing element is arranged, which seals a third annular gap between the first end 48 of the particle filter casing 16 and the first portion of the projecting cross section.

Die lösbare Verbindung 32 beinhaltet ein Spannmittel, welches die ersten Enden 12, 48 des ersten Aufnahmerohrs 14 und des Partikelfiltermantels 16 einerseits und die ersten Enden 30, 44 des zweiten Aufnahmerohrs 22 und des Oxidationskatalysatormantels 24 andererseits wenigstens axial gegeneinander spannt. Dadurch wird eine zweite axiale Festlegung der Oxidationskatalysatoreinrichtung 6 und der Partikelfiltereinrichtung 10 vorgesehen oder ausgebildet.The releasable connection 32 includes a clamping device which clamps the first ends 12, 48 of the first receiving tube 14 and the particle filter casing 16 on the one hand and the first ends 30, 44 of the second receiving tube 22 and the oxidation catalytic converter casing 24 on the other hand at least axially against one another. As a result, a second axial fixation of the oxidation catalytic converter device 6 and the particle filter device 10 is provided or formed.

Das Spannmittel beinhalten hier beispielsweise eine Spannschelle 70, welche die ersten Enden 12, 48 des ersten Aufnahmerohrs 14 und des Partikelfiltermantels 16 einerseits und die ersten Enden 30, 44 des zweiten Aufnahmerohrs 22 und des Oxidationskatalysatormantels 24 andererseits durch Übergriff axial gegeneinander spannt.The clamping means here include, for example, a clamp 70, which axially clamps the first ends 12, 48 of the first receiving tube 14 and the particle filter casing 16 on the one hand and the first ends 30, 44 of the second receiving tube 22 and the oxidation catalyst casing 24 on the other by overlapping.

Wenigstens nach dem Lösen der lösbaren Verbindung 32 bzw. der Spannschelle 70 und nach dem Trennen der beiden Aufnahmerohre 14, 22 ist dann die Partikelfiltereinrichtung 10 aus dem ersten Aufnahmerohr 14 entnehmbar und kann entweder von Partikeln gereinigt oder durch eine Austausch-Partikelfiltereinrichtung ersetzt werden. Eine solche Auswechslung der Partikelfiltereinrichtung 10 kann beispielsweise notwendig sein, wenn das wenigstens eine Partikelfilterelement nach einiger Betriebszeit mit Partikeln zugesetzt ist. Hierzu wird die Partikelfiltereinrichtung 10 oder die Austausch-Partikelfiltereinrichtung in das erste Aufnahmerohr 14 eingesetzt und dann die gelöste lösbare Verbindung 32 wieder verbunden.At least after loosening the detachable connection 32 or the clamp 70 and after separating the two receiving tubes 14, 22, the particle filter device 10 can then be removed from the first receiving tube 14 and can either be cleaned of particles or replaced by a replacement particle filter device. Such a replacement of the particle filter device 10 may be necessary, for example, if the at least one particle filter element is clogged with particles after a certain period of operation. For this purpose, the particle filter device 10 or the replacement particle filter device is inserted into the first receiving tube 14 and the released, detachable connection 32 is then reconnected.

Zuvor, gleichzeitig oder danach ist auch die Oxidationskatalysatoreinrichtung 6 dem zweiten Aufnahmerohr 22 beispielsweise zu Demontage- oder Wartungszwecken auf einfache Weise entnehmbar bzw. zu Montagezwecken in dem zweiten Aufnahmerohr 22 aufnehmbar. Hierzu ist lediglich das Lösen der einzigen lösbaren Verbindung 32 notwendig, welche zwischen dem ersten Ende 12 ersten Aufnahmerohr 14 und dem ersten Ende 30 des zweiten Aufnahmerohr 22 vorgesehen ist. Mit dem Lösen oder Verbinden der lösbaren Verbindung 32 werden darüber hin aus auch gleichzeitig die ersten Enden 48, 44 des Partikelfiltermantels 16 und des Oxidationskatalysatormantels 24 voneinander gelöst oder miteinander verbunden.Beforehand, at the same time or afterwards, the oxidation catalytic converter device 6 can also be easily removed from the second receiving tube 22, for example for dismantling or maintenance purposes, or accommodated in the second receiving tube 22 for assembly purposes. All that is necessary for this is the release of the single detachable connection 32 which is provided between the first end 12 of the first receiving tube 14 and the first end 30 of the second receiving tube 22 . With the release or connection of the detachable connection 32, the first ends 48, 44 of the particle filter casing 16 and the oxidation catalyst casing 24 are also simultaneously detached from one another or connected to one another.

BezugszeichenlisteReference List

11
Abgasnachbehandlungseinrichtungexhaust aftertreatment device
22
GehäuseHousing
44
Eingangsgehäuseinput housing
66
Oxidationskatalysatoreinrichtungoxidation catalyst device
88th
Ausgangsgehäuseexit housing
1010
Partikelfiltereinrichtungparticle filter device
1212
erstes Endefirst end
1414
erstes Aufnahmerohrfirst pickup tube
1616
Partikelfiltermantelparticulate filter jacket
1818
erste Lagermattefirst storage mat
2020
Partikelfilterelementparticle filter element
2222
zweites Aufnahmerohrsecond pickup tube
2424
Oxidationskatalysatormanteloxidation catalyst jacket
2626
zweite Lagermattesecond storage mat
2828
Oxidationskatalysatorelementoxidation catalyst element
3030
erstes Endefirst end
3232
lösbare VerbindungDetachable connection
3434
Trennebeneparting line
3636
erste Mittelachsefirst central axis
3838
zweite Mittelachsesecond central axis
4040
Abgaseinlassöffnungexhaust gas inlet opening
4242
Abgasauslassöffnungexhaust outlet opening
4444
erstes Endefirst end
4646
zweites Endesecond end
4848
erstes Endefirst end
5050
zweites Endesecond end
5252
zweiter Drahtgestrickringsecond wire mesh ring
5454
erster Drahtgestrickringfirst wire mesh ring
5656
erstes Dichtungselementfirst sealing element
5858
erster Ringspaltfirst annular gap
6060
zweites Dichtungselementsecond sealing element
6262
zweiter Ringspaltsecond annular gap
6464
vorspringender Querschnittprotruding cross-section
64a64a
erster Abschnittfirst section
64b64b
zweiter Abschnittsecond part
6666
drittes Dichtungselementthird sealing element
6868
dritter Ringspaltthird ring gap
7070
Spannschelleclamp

Claims (10)

  1. An exhaust gas treatment apparatus (1) of a combustion engine wherein the exhaust gas treatment apparatus at least partially removes pollutants from an exhaust gas flow that is introduced through an exhaust gas inlet opening (40) and released into a ambient atmosphere through an exhaust gas outlet opening (42) and wherein the exhaust gas treatment apparatus (1) includes a housing (2),
    a) wherein a first receiving tube (14) is provided in which at least a portion of a first exhaust gas treatment device (10) including a tubular first jacket (16) that is separate from the first receiving tube (14) and a second receiving tube (22) and at least one first exhaust gas treatment element (20) in particular fixed in the first jacket (16) at least by a first support mat (18) is removably received, and
    b) wherein the second receiving tube (22) receives at least a portion of a second exhaust gas treatment device (6) including at least one second exhaust gas treatment element (28), and
    c) wherein at least the first receiving tube (14) and the second receiving tube (22) are connected with one another by a connection (32) that is disengagable in a nondestructive manner so that the first receiving tube (14) is separable from the second receiving tube (22) after disengaging the connection (32) that is disengagable in the nondestructive manner without destruction,
    d) wherein the second exhaust gas treatment device (6) includes a second tubular jacket (24) that is separate from the first receiving tube (14) and the second receiving tube (22), wherein the at least one second exhaust gas treatment element (28) is fixed in the second jacket (24) in particular by a second support mat (26),
    e) wherein at least one portion of the second exhaust gas treatment device (6) that is received in the second receiving tube (22) is removably received in the second receiving tube (22),
    characterized in that
    f) a first seal element (56) is arranged at least in a portion of a separation plane (34) between the first receiving tube (14) and the second receiving tube (22) between the first receiving tube (14) and the first jacket (16), wherein the first seal element (56) seals a first annular gap (58) between the first receiving tube (14) and the first jacket (16), and a second seal element (60) is arranged between the second receiving tube (22) and the second jacket (24), wherein the second seal element seals a second annular gap (62) between the second receiving tube (22) and the second jacket (24), and
    g) a first end (12) of the first receiving tube (14) and a first end (48) of the first jacket (16) is bent radially outward in the separation plane (34) and the first seal element (56) is arranged between the first end (48) of the first jacket (16) and the first end (12) of the first receiving tube (14), and wherein a first end (30) of the second receiving tube (22) and a first end (44) of the second jacket (24) is bent radially outward, and the second seal element (60) is arranged between the first end (30) of the second receiving tube (22) and the first end (44) of the second jacket (24), and
    h) the first end (48) of the first jacket (16) forms a radially outward protruding cross section (64) with two sections (64a, 64b) oriented axially away from one another and the first end (12) of the first receiving tube (14) extends parallel to a first section (64a) of the protruding cross section (64) oriented towards the first receiving tube (14), and the first end (44) of the second jacket (24) and the first end (30) of the second receiving tube (22) run parallel to the second section (64b) of the protruding cross section (64) that is oriented towards the second receiving tube (22), wherein a third seal element (66) is arranged between the first end (44) of the second jacket (24) and the second section (64b) of the protruding cross section (64), wherein the third seal element (66) seals a third annular gap (68) between the first end (44) of the second jacket (24) and the second section (64b) of the protruding cross section (64), or that the first end (44) of the second jacket (24) includes a radially outward protruding cross section with two sections that are oriented axially away from each other, and that the first end (48) of the first jacket (16) and the first end (12) of the first receiving tube (14) run parallel to a first section of the protruding cross section (64) that is oriented towards the first receiving tube (14), and that the first end (30) of the second receiving tube (22) runs parallel to a second section of the protruding cross section that is oriented towards the second receiving tube (22), wherein a third seal element (66) is arranged between the first end (48) of the first jacket (16) and the first section of the protruding cross section, wherein the third seal element (66) seals a third annular gap (68) between the first end (48) of the first jacket (16) and the first section of the protruding cross section (64), and that
    i) the connection (32) that is disengageable in the nondestructive manner includes a clamping device which clamps the radially outward bent first ends (12, 48) of the first receiving tube (14) and of the first jacket (16) and the radially outward bent first ends (30) of the second receiving tube (22) and of the second jacket (24) at least axially against each other.
  2. The exhaust gas treatment apparatus (1) according to claim 1, characterized in that
    a) the first receiving tube (14) is formed at least partially by a first housing shell (8) of the housing (2), and/or
    b) the second receiving tube (22) is at least partially formed by a second housing shell (4) of the housing (2).
  3. The exhaust gas treatment apparatus (1) according to claim 1 or 2,
    characterized in that a first common center axis (36) of the first receiving tube (14) and of the first jacket (16) and a second center axis of the second receiving tube (22) and of the second jacket (24) are aligned coaxial.
  4. The exhaust gas treatment apparatus (1) according to one of the preceding claims, characterized in that
    a) the at least one second exhaust gas treatment element (28) is flow connected with the exhaust gas inlet opening (40) and the at least one first exhaust gas treatment element (20) is flow connected with the exhaust gas outlet opening (42), or
    b) the at least one second exhaust gas treatment element (28) is flow connected with the exhaust gas outlet opening (42) and the at least one first exhaust gas treatment element (20) is flow connected with the exhaust gas inlet opening (40).
  5. The exhaust gas treatment apparatus (1) according to one of the preceding claims, characterized in that the connection (32) that is disengageable in a non-destructive manner is an only connection that is disengageable in a non-destructive manner between the first receiving tube (14) and the second receiving tube (22).
  6. The exhaust gas treatment apparatus (1) according to one of the preceding claims, characterized in that the first exhaust gas treatment device (10) is essentially received in its entirety in the first receiving tube (14) and the second exhaust gas treatment device (6) is essentially received in its entirety in the second receiving tube (22).
  7. The exhaust gas treatment apparatus (1) according to one of the preceding claims, characterized in that the clamping device includes a clamp that axially preloads first ends (12, 48) of the first receiving tube (14) and of the first jacket (16) and first ends (30, 44) of the second receiving tube (22) and of the second jacket (24) relative to each other by radial envelopment.
  8. The exhaust gas treatment apparatus (1) according to one of the preceding claims, characterized in that the protruding cross section (64) protrudes in a wedge shape.
  9. The exhaust gas treatment apparatus (1) according to one of the preceding claims, characterized in that
    a) the first exhaust gas treatment device (10) includes a particle filter device wherein the first jacket (16) includes a particle filter jacket and the first exhaust gas treatment element (20) includes a particle filter element, and
    b) the second exhaust gas treatment device (6) includes a catalytic oxidation converter wherein the second jacket (24) includes a catalytic oxidation converter jacket and the second exhaust gas treatment element (28) includes at least one catalytic oxidation converter element, or
    c) the first exhaust gas treatment device (10) includes a particle filter device wherein the first jacket (16) includes a particle filter jacket and the first exhaust gas treatment element (20) includes a particle filter element, and
    d) the second exhaust gas treatment device (6) includes a catalytic SCR converter wherein the second jacket (24) includes a catalytic SCR reduction converter jacket and the second exhaust gas treatment element (28) includes at least one catalytic SCR reduction element.
  10. A combustion engine, comprising at least one exhaust gas treatment apparatus (1) according to at least one of the preceding claims.
EP19197440.1A 2019-09-16 2019-09-16 Exhaust gas aftertreatment device with exhaust gas aftertreatment devices replaceable by releasing a non-destructively releasable connection Active EP3792463B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP19197440.1A EP3792463B1 (en) 2019-09-16 2019-09-16 Exhaust gas aftertreatment device with exhaust gas aftertreatment devices replaceable by releasing a non-destructively releasable connection

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP19197440.1A EP3792463B1 (en) 2019-09-16 2019-09-16 Exhaust gas aftertreatment device with exhaust gas aftertreatment devices replaceable by releasing a non-destructively releasable connection

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Publication Number Publication Date
EP3792463A1 EP3792463A1 (en) 2021-03-17
EP3792463B1 true EP3792463B1 (en) 2023-05-31

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Publication number Priority date Publication date Assignee Title
DE102020100285A1 (en) * 2020-01-09 2021-07-15 Eberspächer Exhaust Technology GmbH Exhaust system

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2821117B1 (en) * 2001-02-21 2004-04-23 Faurecia Ind CLEANABLE DEVICE FOR CLEANING EXHAUST GASES FROM AN ENGINE
US7047731B2 (en) 2002-02-27 2006-05-23 Delphi Technologies, Inc. Diesel particulate filter ash removal
WO2006029199A1 (en) * 2004-09-08 2006-03-16 Donaldson Company, Inc. Joint for an engine exhaust system component
DE202005001616U1 (en) * 2005-02-01 2005-05-25 Roth-Technik Austria Ges.M.B.H. Detachable connection of profile components with centering rings
JP5215789B2 (en) * 2008-09-18 2013-06-19 ヤンマー株式会社 Exhaust gas purification device
DE102009014435A1 (en) * 2009-03-26 2010-10-14 J. Eberspächer GmbH & Co. KG Exhaust gas treatment device
CN108431378B (en) * 2015-12-31 2021-05-25 福特汽车萨纳伊股份有限公司 Structurally improved exhaust treatment assembly and related treatment member
DE102017005356A1 (en) * 2017-06-07 2018-12-13 Roth Technik Austria Gesellschaft Mit Beschränkter Haftung Exhaust after-treatment device of an internal combustion engine of a motor vehicle

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