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CN201891469U - Diesel particulate filter assembly - Google Patents

Diesel particulate filter assembly Download PDF

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Publication number
CN201891469U
CN201891469U CN2010202090616U CN201020209061U CN201891469U CN 201891469 U CN201891469 U CN 201891469U CN 2010202090616 U CN2010202090616 U CN 2010202090616U CN 201020209061 U CN201020209061 U CN 201020209061U CN 201891469 U CN201891469 U CN 201891469U
Authority
CN
China
Prior art keywords
exhaust
passage
housing
device structure
filtration device
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.)
Expired - Fee Related
Application number
CN2010202090616U
Other languages
Chinese (zh)
Inventor
张小钢
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.)
Ford Global Technologies LLC
Original Assignee
Ford Global Technologies LLC
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 Ford Global Technologies LLC filed Critical Ford Global Technologies LLC
Application granted granted Critical
Publication of CN201891469U publication Critical patent/CN201891469U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01NGAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/02Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
    • F01N3/021Exhaust 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
    • F01N3/022Exhaust 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 characterised by specially adapted filtering structure, e.g. honeycomb, mesh or fibrous
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D46/00Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/10Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D46/00Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/52Particle separators, e.g. dust precipitators, using filters embodying folded corrugated or wound sheet material
    • B01D46/521Particle separators, e.g. dust precipitators, using filters embodying folded corrugated or wound sheet material using folded, pleated material
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2279/00Filters adapted for separating dispersed particles from gases or vapours specially modified for specific uses
    • B01D2279/30Filters adapted for separating dispersed particles from gases or vapours specially modified for specific uses for treatment of exhaust gases from IC Engines
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01NGAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2330/00Structure of catalyst support or particle filter
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00Road transport of goods or passengers
    • Y02T10/10Internal combustion engine [ICE] based vehicles
    • Y02T10/12Improving ICE efficiencies

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (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)

Abstract

The utility model provides a diesel particulate filter assembly, which comprises a shell and a filter structure, wherein the filter structure is arranged in the shell for gathering particulate materials in the received exhaust gas when the received exhaust gas passes through the shell along a longitudinal shaft of the shell; the filter structure has a wall made of the materials capable of gathering particles and penetrating gas; the wall passes through an exhaust part and gathers particular materials in the exhaust gas; and the wall is inclined to the direction of the exhaust gas. The diesel particulate filter assembly has a pressure loss lower than a conventional DPF (diesel particulate filter) and achieves high DPF gathering efficiency.

Description

The diesel particulate filter assembly
[technical field]
Present invention relates in general to exhaust-gas treatment system, relate in particular to the diesel particulate filter assembly that in this system, uses.
[background technique]
As known in the art, current most of current diesel exhaust gas processing systems comprise diesel oxidation catalyst (DOC, Diesel 0xidation Catalyst) and diesel particulate filter (DPF, DieselParticulate Filter) subsequently.DPF comprises the matrix (being sometimes referred to as matrix brick or brick) that has outlet end that seals at the inlet passage place and the entrance point that seals at the outlet passage place.Blast air is by inlet passage, passes cell-wall and leaves by outlet passage subsequently.Particulate is filtered in inlet passage.
Equally as known in the art, particulate filter is used in the vent systems of explosive motor, and particularly diesel engine (diesel particulate filter or DPF) is to capture and to remove the particulate matter that is mainly formed by carbonaceous material.Along with engine exhaust passes through DPF, particulate is trapped in the filter and in time to be assembled.This resistance that can cause blast air to pass DPF increases, and therefore increases the back pressure on the motor.The increase of back pressure particularly has harmful effect to fuel consumption to engine running.For back pressure is reduced to acceptable level, the particulate of assembling by burning (it is most of for flammable) is periodically regenerated DPF.
Equally as known in the art, Chang Gui steinheilite or silicon carbide DPF system need experience regenerative process to burn the soot that accumulates in the DPF wall surface.This program tape is served relevant problem: 1. fuel consumption because be by the back spray or down the pipe inspection diesel fuel all can produce higher delivery temperature.Usually the fuel consumption scope is at 3%-5%; 2. the soot that distributes of the inequality that is caused by relatively poor mobile conformity will cause temperature gradient higher in the DPF matrix, and cause for example crack fault (ring-off-crack failure) of durability issues; 3. during dpf regeneration, find low-down or even negative NOx conversion efficiency, take usually more than 10 minutes.This becomes a problem to standard I II emission request.
[model utility content]
The utility model can solve more above-mentioned problems.According to the utility model on the one hand, provide a kind of diesel particulate filter assembly.This diesel particulate filter assembly comprises housing and filtration device structure, and this filtration device structure is arranged at and is used in the housing capturing microparticle material in the exhaust that receives when the exhaust that receives when the fore and aft axis of housing passes housing.Filtration device structure has the wall of the material formation of collecting particulate and passing through gas.This wall is by discharge portion while trap particles material in this exhaust of passing through.The direction of the exhaust of this wall and reception is obliquely installed.
According to the utility model on the other hand, provide a kind of diesel particulate filter assembly.This diesel particulate filter assembly comprises housing; Filtration device structure, this filtration device structure are arranged at and are used in the housing capturing microparticle material in the exhaust that receives when the exhaust that receives when the fore and aft axis of housing passes housing.Filtration device structure forms the passage that a plurality of walls that form by the material of gas by collecting particulate are separated.Wall with discharge portion from passage one be sent to adjacent another in the passage, trap particles material in this exhaust of passing through simultaneously, the direction of the exhaust of wall and reception is obliquely installed.
According to the utility model more on the one hand, provide a kind of diesel particulate filter assembly.This diesel particulate filter assembly comprises: have the housing that is used for receiving from diesel engine the import of exhaust inlet stream; Filtration device structure, this filtration device structure are arranged at the microparticle material that is used in the housing capturing in the exhaust that receives when outlet that housing is passed in the exhaust that receives enters to out air-flow, inlet stream with go out the fore and aft axis setting of air-flow along housing.This filtration device structure forms a plurality of passages that are used for by the discharge portion that receives, the porous wall that passage forms by the material of gas by collecting particulate is separated, wall with discharge portion from passage one be sent to adjacent another in the passage, trap particles material in this exhaust of passing through simultaneously.The direction of the exhaust of separates walls of each and reception is obliquely installed in the passage.
In one embodiment, passage has inlet passage part and outlet passage part, and the inlet passage part is in the upstream of outlet passage part.
In one embodiment, assembly has the main passage except that described a plurality of passages, and the main passage is arranged between the inwall and filtration device structure of housing.
In one embodiment, collect particulate and material by gas is a paper.
In one embodiment, filtration device structure is installed in the housing removedly.
According to the utility model on the other hand, provide a kind of diesel particulate filter assembly.This diesel particulate filter assembly comprises: housing; Receive the import of the inlet stream of exhaust; Be arranged at the filtration device structure that is used for being captured in the microparticle material that exhaust receives in the housing, wherein filtration device structure comprises the pleated sheet of at least one porous material; Discharge the outlet that filtration device structure is passed in exhaust; The a plurality of passages that form by filtration device structure, each all has inlet passage part and lower exit channel part in a plurality of passages, and the separates walls separation that formed by pleated sheet of inlet passage part and lower exit channel part; Wherein exhaust inlet stream was passed a plurality of passages before passing outlet release.
In one embodiment, pleated sheet is along the longitudinal axis setting of housing, one end of pleated sheet can be fixed to the part of housing adjacent entrance, the opposite end of pleated sheet is fixed to the relative part of the contiguous outlet of housing, and the separates walls of a plurality of passages and the fore and aft axis of housing tilt, and wherein the inlet stream of exhaust was passed described main passage and described a plurality of passage before passing outlet release.
Pleated sheet is positioned at cylindrically in one embodiment, and the separates walls of described a plurality of passages can tilt with the longitudinal shaft of housing.
The pressure loss of diesel particulate filter of the present utility model is lower than conventional DPF, and can reach high DPF arresting efficiency.
With following detailed description one or more embodiments of the detail of the present utility model have been proposed in conjunction with the accompanying drawings.Further feature of the present utility model, target and advantage will become apparent from detailed description and accompanying drawing and claims.
[description of drawings]
Fig. 1 is the lateral cross section schematic representation according to diesel particulate filter of the present utility model (DPF).
Figure 1A is one a cross sectional representation in a plurality of passages that use in the filtration device structure that uses of the diesel particulate filter assembly of Fig. 1.
Figure 1B is the schematic perspective view of the diesel particulate filter of Fig. 1.
Fig. 2 is the schematic perspective view according to another embodiment's of the present utility model filtration device structure.
Fig. 2 A is the schematic perspective view of an example in a plurality of passages of using of the diesel particulate filter assembly of Fig. 2.
Fig. 2 B is the perspective exploded view of an example in a plurality of passages of using of the diesel particulate filter assembly of Fig. 2; This schematic representation shows the inlet passage part and the outlet passage part of an example in a plurality of passages.
[embodiment]
Identical reference mark indication components identical in a plurality of views.
Refer now to Fig. 1,1A and 1B, shown diesel particulate filter (DPF) assembly 10.This assembly comprises: have the two-piece type housing 12 that is used to receive from the import 14 of the inlet stream 16 of the exhaust of diesel engine (not shown); With the filtration device structure 18 of the microparticle material that is arranged in the exhaust that housing 12 is used to be captured in reception (as the exhaust of passing in outlet that is received), the exhaust of Jie Shouing is passed through to export like this, and the air-flow 20 of filtration passes the outlet 22 of housing 12.Inlet stream 16 and discharge air-flow 20 are along the longitudinal axis setting of housing 12.
Filtration device structure 18 (here for porous paper) forms a plurality of passages 30,32 and 34 that the part of a plurality of blast airs that are used to receive 16 is passed.Passage 30,32 and 34 has and is used to the outlet that receives the import of air-flow 16 and be used to discharge the air-flow 20 of filtration, and import is positioned at the upstream of outlet.
Passage 34 (more clearly illustrating an example among Figure 1A) is for pass through separated from one another one of the porous wall 40 of material formation of gas by collecting particulate.Each passage 34 has by the inlet passage part 34I that separates as the part of the wall that is designated as wall 40S 40 of clearer demonstration among Figure 1A and the outlet passage part 340 in downstream.Wall 40 will be by part another adjacency channel that is sent to passage 34 from passage 34 of the exhaust of arrow indication, and the microparticle material in the exhaust that will transmit is captured among the separates walls 40S simultaneously.The separates walls 40S of each is provided with along the tilt axis 38 of (and therefore tilt with the direction of the exhaust that receives, as shown in Figure 1A) of the longitudinal axis 24 with housing 12 in these passages 34.
More specifically, filtration device structure 18 has the main passage (for example passage 30) except a plurality of passages 32, and main passage 30 is arranged between the inwall 42 and filtration device structure 18 of housing 12 like this.Depend on that it will experience the great pressure loss, exhaust can be passed through filter wall 40 anywhere.Air-flow is always towards having the path that minimum pressure falls.If the place, end of upper channel 30 is passed in all exhausts, the big pressure loss (along with time lapse, soot deposition will produce even the bigger pressure loss) will be had; Therefore a part of exhaust inlet passage 34 (more specifically being inlet passage part 34I) and pass separates walls 40S to adjacent outlet passage part 340 is as arrow 35 indications.
As above carry, collect particulate and material (being wall 40) by gas is a paper.In addition, filtration device structure 18 is installed in separable two-piece housing 12 removedly, when it need change filtration device structure 18.Here, the gross area of filter that for example has 0.2m (height) x0.25m (wide) of 100 folding (passages) will be 100x0.2x0.25=5m 2, the porosity ratio of fender paper can be greater than 80%, and by the pressure loss more much lower than the DPF of routine, the DPF arresting efficiency can reach 99.9%.
Refer now to Fig. 2, shown the alternate embodiments of diesel particulate filter structure 18 '.The filtration device structure 18 ' here is for having the cylindrical filter structure of a plurality of passages 34 ' and being installed in the cylindrical housings 12 ' as removable element.Shown an example passage 34 ' among Fig. 2 A and the 2B.It should be noted that passage 34 ' has inlet passage part 34I and the lower exit channel part of being separated by separates walls 40S 340.Wall 40 with discharge portion from passage 34a one pass another adjacency channel that separates walls 40S is sent to passage 34a, capture the microparticle material in the exhaust pass through simultaneously.The separates walls 40S of each such passage 34 be twisted and also with direction (by the arrow 16 indications) oblique of the exhaust that receives.Here, for example fender paper DPF filter has 8 " x12 " filter, have 100 folding (passages), the gross area is: the porosity ratio of 2x100x0.1x0.25=5 square metre and fender paper can be greater than 80%, the DPF arresting efficiency can reach 99.9%, than the lower pressure loss of conventional DPF.
Passage 34 can any mode easily be tied up, and for example becomes the sheet iron strip of wooden buckt as being used for batten tied up.
Various embodiments of the present utility model has been described.Yet, be can make multiple modification not departing under essence of the present utility model and the scope with should be understood that.Therefore, in the scope of other embodiment claim below.

Claims (10)

1. diesel particulate filter assembly is characterized in that comprising:
Housing;
Filtration device structure, described filtration device structure is arranged at the microparticle material that is used in the described housing when the exhaust that receives captures the exhaust of described reception when the fore and aft axis of described housing passes described housing in, described filtration device structure has the wall of the material formation of collecting particulate and passing through gas, described wall is by described discharge portion while trap particles material in the described exhaust of passing through, and the direction of the exhaust of described wall and described reception is obliquely installed.
2. filter assembly as claimed in claim 1 is characterized in that, described collection particulate and material by gas is a paper, and described filtration device structure is installed in the described housing removedly.
3. diesel particulate filter assembly is characterized in that comprising:
Housing;
Filtration device structure, described filtration device structure is arranged at the microparticle material that is used in the described housing when the exhaust that receives captures the exhaust of described reception when the fore and aft axis of described housing passes described housing in, described filtration device structure forms the passage that a plurality of walls that form by the material of gas by collecting particulate are separated, described wall with described discharge portion from described passage one be sent to adjacent another in the described passage, while trap particles material in the described exhaust of passing through, the direction of the exhaust of described wall and described reception is obliquely installed.
4. filter assembly as claimed in claim 3 is characterized in that, described assembly has the main passage except that described a plurality of passages, and described main passage is arranged between the inwall and described filtration device structure of described housing.
5. diesel particulate filter assembly is characterized in that comprising:
Has the housing that is used for receiving the import of exhaust inlet stream from diesel engine;
Filtration device structure, described filtration device structure is arranged at the microparticle material in the exhaust that is used for capturing described reception in the described housing when outlet that described housing is passed in the exhaust that receives enters to out air-flow, described import and outlet are along the fore and aft axis setting of described housing, described filtration device structure forms a plurality of passages that are used for by the discharge portion of described reception, the porous wall that described passage forms by the material of gas by collecting particulate is separated, described wall with described discharge portion from described passage one be sent to adjacent another in the described passage, while trap particles material in the described exhaust of passing through, the direction of the exhaust of described separates walls of each and described reception is obliquely installed in the described passage.
6. filter assembly as claimed in claim 5 is characterized in that, described passage has inlet passage part and outlet passage part, and described inlet passage part is in the upstream of described outlet passage part.
7. diesel particulate filter assembly is characterized in that comprising:
Housing;
Receive the import of the inlet stream of exhaust;
Be arranged at the filtration device structure that is used for being captured in the microparticle material that exhaust receives in the described housing, wherein said filtration device structure comprises the pleated sheet of at least one porous material;
Discharge the outlet that described filtration device structure is passed in exhaust;
The a plurality of passages that form by described filtration device structure, each all has inlet passage part and lower exit channel part in described a plurality of passage, and the separates walls separation that formed by described pleated sheet of described inlet passage part and described lower exit channel part;
Wherein said exhaust inlet stream was passed described a plurality of passage before passing described outlet release.
8. diesel particulate filter assembly as claimed in claim 7, it is characterized in that, also comprise the main passage between the inwall that is arranged at described housing, described pleated sheet is along the longitudinal axis setting of described housing, one end of described pleated sheet is fixed to the part of the contiguous described import of described housing, the opposite end of described pleated sheet is fixed to the relative part of the contiguous described outlet of described housing, and the separates walls of described a plurality of passages and the fore and aft axis of described housing tilt, and the inlet stream of wherein said exhaust was passed described main passage and described a plurality of passage before passing described outlet release.
9. diesel particulate filter assembly as claimed in claim 7 is characterized in that described pleated sheet is positioned at cylindrical, and the separates walls of described a plurality of passages and the longitudinal shaft of described housing tilt.
10. diesel particulate filter assembly as claimed in claim 7 is characterized in that, the pleated sheet of described porous material is a paper, and the surface area of described pleated sheet is that the porosity ratio of 5 square metres and described paper is greater than 80%.
CN2010202090616U 2009-05-26 2010-05-26 Diesel particulate filter assembly Expired - Fee Related CN201891469U (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US12/471,809 US20100300082A1 (en) 2009-05-26 2009-05-26 Diesel particulate filter
US12/471,809 2009-05-26

Publications (1)

Publication Number Publication Date
CN201891469U true CN201891469U (en) 2011-07-06

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CN (1) CN201891469U (en)
DE (1) DE102010016600A1 (en)

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US20100300082A1 (en) 2010-12-02
DE102010016600A1 (en) 2010-12-02

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GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20110706

Termination date: 20190526

CF01 Termination of patent right due to non-payment of annual fee