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EP1164265A2 - Filtre à suie pour le gaz d'échappement d'un moteur diesel - Google Patents

Filtre à suie pour le gaz d'échappement d'un moteur diesel Download PDF

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Publication number
EP1164265A2
EP1164265A2 EP01114408A EP01114408A EP1164265A2 EP 1164265 A2 EP1164265 A2 EP 1164265A2 EP 01114408 A EP01114408 A EP 01114408A EP 01114408 A EP01114408 A EP 01114408A EP 1164265 A2 EP1164265 A2 EP 1164265A2
Authority
EP
European Patent Office
Prior art keywords
contact part
filter according
soot filter
glow
free end
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.)
Withdrawn
Application number
EP01114408A
Other languages
German (de)
English (en)
Other versions
EP1164265A3 (fr
Inventor
Walter Stöpler
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.)
Faurecia Automobiltechnik GmbH
Original Assignee
Faurecia Abgastechnik 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 Faurecia Abgastechnik GmbH filed Critical Faurecia Abgastechnik GmbH
Publication of EP1164265A2 publication Critical patent/EP1164265A2/fr
Publication of EP1164265A3 publication Critical patent/EP1164265A3/fr
Withdrawn legal-status Critical Current

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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
    • 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
    • F01N3/023—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 using means for regenerating the filters, e.g. by burning trapped particles
    • F01N3/027—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 using means for regenerating the filters, e.g. by burning trapped particles using electric or magnetic heating means
    • 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
    • F01N2240/00—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being
    • F01N2240/16—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being an electric heater, i.e. a resistance heater
    • 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
    • F01N2330/00—Structure of catalyst support or particle filter
    • F01N2330/06—Ceramic, e.g. monoliths
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S55/00—Gas separation
    • Y10S55/30—Exhaust treatment

Definitions

  • the invention relates to a soot filter for the exhaust gas of a diesel engine.
  • Such a soot filter comprises an approximately cylindrical filter in particular made of ceramic material in the longitudinal direction is interspersed with channels.
  • the walls of the canals are in turn porous, so that exhaust gas flowing into a channel via the Pores get into adjacent channels.
  • These channels are on yours closed towards the flow direction end, while the former channels at their in the flow direction pointing ends are closed. That way it will Exhaust gas forced from a central channel through the perforation to flow into neighboring channels. Soot particles settle doing so within the channels.
  • At least one glow plug is included to regenerate the filter an approximately bolt-shaped glow rod, the free end of which is located near or touches the filter.
  • conventional Glow plugs are relative to the free end of the glow stick arranged close to the front face of the filter body, thus a local heating of the filter body and thus the Soot particles can occur up to their ignition temperature.
  • a free burning of the filter body enabling is mainly a very small one Distance and also a relatively large contact area between Glow rod and filter body necessary.
  • With the conventional Soot filtering is not sufficiently guaranteed. Because of the sometimes very high component and manufacturing tolerances as well as due to different thermal expansions between glow plug and filter body is the exact and secure arrangement of the glow plug on the filter body front problematic.
  • the object of the invention is a soot filter to propose that is improved in this regard.
  • a soot filter comprises a filter body 2 which is arranged in a housing 3 and from exhaust gas A from a Diesel engine is flowed through.
  • the soot particles contained in the exhaust gas R sit both inside the filter body 2 as also on its end face 4.
  • glow plugs 10 There are a plurality on the housing 3 screwed by glow plugs 10, of which for reasons only one is shown for clarity.
  • the Glow plugs 10 protrude into the interior of the housing 3 such that whose glow rod 20 with its free end 21 close to the end face 4 of the filter body 2 is arranged.
  • a contact part is axially displaceable and resilient on the glow rod 20 22 stored such that it is in the zero position, i. H. at relaxed spring, with its facing away from the candle shaft 12 Front 24 protrudes beyond the free end 21 of the glow rod 20.
  • the contact part 22 consists of a good heat-conducting preferably metallic material, so that a good thermal Contact between the glow rod 20 and the end face 4 of the filter body 2 even with unavoidable manufacturing tolerances as well as changes in distance caused by thermal expansion ensured between the free end 21 and the end face 4 is.
  • the filter body 2 has as already mentioned explains a plurality of adjacent channels 6 that alternately on their in or against the flow direction pointing end are closed.
  • the glow plug 10 is arranged, the plug shaft 12 of which is a Has thread 14 with which this in the housing 3 (Fig. 1) 14, with which it is screwed into the housing 3 (FIG. 1) is.
  • the glow rod 20, which is electrical, protrudes from the candle shaft 12 is heated, so that in the range of a few millimeters, for example about 4 mm, spaced from its free end 21 approximately annular annealing zone Z a temperature of more than 1000 ° C is reached. This high temperature is required to ignite the soot afterburning. To ensure, that its afterburning turns out to be an exothermic reaction propagates into the interior of the filter body 2 and oxidation of the soot in the filter body 2 causes it necessary to the soot on the end face 4 of the filter body 2 ignite.
  • the contact part 22 faces the candle shaft 12 End an annular circumferential groove 23a in which the end turn of a coil spring 26 is mounted.
  • the coil spring 26 is with its opposite end face Winding likewise in a ring shape in the candle shaft 12 circumferential groove 23b mounted so that the contact part 22 with its end face 24, in the exemplary embodiment an annular one Contact surface, pressed resiliently onto the end face 4 becomes.
  • the for recording the end turns of the coil spring 26 provided Grooves 23a, b radially from the surface of the glow rod 20 are spaced so that the coil spring 26 the glow rod 20 not touched.
  • the contact part 22 is for this on its Glow plug 10 facing end with a flange-like wall thickening 27 provided, in which the groove 23a with sufficient Distance between the bottom of the groove and the surface of the glow rod 50 can be introduced. This is excessive and their Heating up of the coil spring, which has an adverse effect on the service life 26 avoided.
  • the contact part 22 according to FIG. 3 can also be used be formed by a sleeve along its entire length has approximately a constant wall thickness.
  • a contact part 22 a rotating part is provided. 4 can alternatively for this purpose as a contact part 22 also a thin-walled Sheet metal formed part can be provided in the corresponding shape to that of the surface of the glow stick 20 spaced groove 23a is stamped.
  • the contact part 22 is on its from the glow plug 10 facing end face 24 closed and in particular provided with a round, spherical face. This has the Advantage that even when the glow plug is installed at an angle 10 always a good one, in this case almost punctiform Contact with the end face 4 of the filter body 2 ensured is.
  • this coil spring is in The region 20b of the glow rod 20 facing the candle shaft 12 with a larger radius and thus spaced from the glow stick 20 wound, so that at least for this area of the coil spring an unfavorable the spring characteristic with a longer service life influencing thermal stress is avoided.
  • the turns are those formed from a spring wire Contact part 22 in the area of the free end 21 closely adjacent, so that they touch and a closed one Form sleeve.
  • the diameter of the winding constant, so that the coil spring in its actual spring area also sliding on the glow rod 20 is stored.
  • the contact part 22 comprises one on the glow rod 20 sliding and slidably mounted inner sleeve 22a, the is surrounded by an outer sleeve 22b.
  • Inner sleeve 22a and outer sleeve 22b are on their facing away from the glow plug End faces connected to one another via a support ring 30, that according to the enlarged detailed representation in FIG. 11 has a plurality of passage openings 32.
  • the filter body 2 is on its end face 4 with a depression or recess 40 provided, into which the free end 21 of the glow rod 20 protrudes.
  • the contact part 22 has the shape of a sleeve surrounding the glow rod 20. Different 1 protrudes in the exemplary embodiment 13, the free end 21 of the glow rod 20 beyond the end face 24 of the contact part 22.
  • the outside diameter of the sleeve-shaped contact part 22 is larger than the diameter of the recess 40 so that the contact part 22 from the coil spring 26 to the face 4 of the filter body 2 is pressed. Since the free end 21 in the filter body 2nd The glow zone Z protrudes closer to its end face 4. Since the contact part 22 is also shorter than in the embodiment 1 is the thermal contact between glow rod 20 and filter body 2 improved.
  • sleeve-shaped contact part shown in Fig. 13 22 is also an embodiment in this embodiment of the contact part 22 corresponds to that in FIG. 10 or 12 illustrated embodiments of advantage.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Processes For Solid Components From Exhaust (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)
EP01114408A 2000-06-16 2001-06-15 Filtre à suie pour le gaz d'échappement d'un moteur diesel Withdrawn EP1164265A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10028987A DE10028987A1 (de) 2000-06-16 2000-06-16 Russfilter für das Abgas eines Dieselmotors
DE10028987 2000-06-16

Publications (2)

Publication Number Publication Date
EP1164265A2 true EP1164265A2 (fr) 2001-12-19
EP1164265A3 EP1164265A3 (fr) 2002-03-06

Family

ID=7645504

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01114408A Withdrawn EP1164265A3 (fr) 2000-06-16 2001-06-15 Filtre à suie pour le gaz d'échappement d'un moteur diesel

Country Status (3)

Country Link
US (1) US6527820B2 (fr)
EP (1) EP1164265A3 (fr)
DE (1) DE10028987A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2429417B (en) * 2005-08-25 2010-08-11 Perkins Engines Co Ltd Autoselective regenerating particulate filter
EP2324216B1 (fr) * 2008-08-08 2012-12-12 Pirelli & C. Eco Technology S.p.A. Procédé et dispositif pour commander la régénération d'un filtre à particules

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2030648A (en) * 1978-10-03 1980-04-10 Lucas Industries Ltd A Starting Aid for a Combustion Engine
GB2038466A (en) * 1978-11-16 1980-07-23 Squirrel Spa Electric cigarette lighter
GB2113302A (en) * 1982-01-16 1983-08-03 Lucas Ind Plc Starting aid for internal combustion engine
US4531363A (en) * 1984-07-30 1985-07-30 General Motors Corporation Diesel exhaust cleaner with alternating glow plug burner system
EP1113154A2 (fr) * 1999-12-30 2001-07-04 Faurecia Abgastechnik GmbH Filtre à suie pour véhicules diesel

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3911326A (en) * 1975-03-10 1975-10-07 Irwin G Ohlsson Glow plug
JPS54113735A (en) * 1978-02-24 1979-09-05 Nissan Motor Co Ltd Glow plug of internal engine
US4450682A (en) * 1980-02-18 1984-05-29 Nippon Soken, Inc. Carbon particulates cleaning device for diesel engine
JPS61491Y2 (fr) * 1981-02-20 1986-01-09
US4397273A (en) * 1981-04-20 1983-08-09 General Motors Corporation Retractable engine igniter
FR2548264B1 (fr) * 1983-06-16 1985-12-13 Renault Regeneration des filtres a particules, notamment pour moteurs diesel
US4503672A (en) * 1983-11-25 1985-03-12 General Motors Corporation Diesel exhaust cleaner with glow plug igniters and flow limiting valve

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2030648A (en) * 1978-10-03 1980-04-10 Lucas Industries Ltd A Starting Aid for a Combustion Engine
GB2038466A (en) * 1978-11-16 1980-07-23 Squirrel Spa Electric cigarette lighter
GB2113302A (en) * 1982-01-16 1983-08-03 Lucas Ind Plc Starting aid for internal combustion engine
US4531363A (en) * 1984-07-30 1985-07-30 General Motors Corporation Diesel exhaust cleaner with alternating glow plug burner system
EP1113154A2 (fr) * 1999-12-30 2001-07-04 Faurecia Abgastechnik GmbH Filtre à suie pour véhicules diesel

Also Published As

Publication number Publication date
US20010054277A1 (en) 2001-12-27
EP1164265A3 (fr) 2002-03-06
US6527820B2 (en) 2003-03-04
DE10028987A1 (de) 2001-12-20

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