WO2008061610A1 - Dispositif de purification des gaz d'échappement - Google Patents

Dispositif de purification des gaz d'échappement Download PDF

Info

Publication number
WO2008061610A1
WO2008061610A1 PCT/EP2007/009420 EP2007009420W WO2008061610A1 WO 2008061610 A1 WO2008061610 A1 WO 2008061610A1 EP 2007009420 W EP2007009420 W EP 2007009420W WO 2008061610 A1 WO2008061610 A1 WO 2008061610A1
Authority
WO
WIPO (PCT)
Prior art keywords
exhaust gas
housing
unit
exhaust
gas purification
Prior art date
Application number
PCT/EP2007/009420
Other languages
German (de)
English (en)
Inventor
Arnd Schmidt
Werner Engeler
Original Assignee
Volkswagen Aktiengesellschaft
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 Volkswagen Aktiengesellschaft filed Critical Volkswagen Aktiengesellschaft
Publication of WO2008061610A1 publication Critical patent/WO2008061610A1/fr

Links

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
    • F01N3/08—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
    • 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
    • F01N13/0097—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 the purifying devices are arranged in a single 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
    • 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
    • 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
    • F01N2470/18—Structure or shape of gas passages, pipes or tubes the axis of inlet or outlet tubes being other than the longitudinal axis of apparatus
    • 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
    • F01N2470/22—Inlet and outlet tubes being positioned on the same side of the apparatus

Definitions

  • the invention relates to an exhaust gas purification device, a gas generating unit with an exhaust gas purification device and a method for purifying an exhaust gas.
  • An exhaust gas purification device generally includes an exhaust gas supply pipe, an exhaust gas-permeable exhaust gas purification unit, and an exhaust gas exhaust pipe. Exhaust gas passes through the exhaust gas supply pipe into the exhaust gas purification unit, in which harmful exhaust gas components are converted, for example, CO is oxidized to CO 2 .
  • the exhaust gas cleaning unit is often flowed perpendicularly from the exhaust gas, with sufficient space for the exhaust gas supply pipe must be present.
  • the invention has for its object to enable an exhaust gas purification with low space requirements.
  • the exhaust gas purifying apparatus for an exhaust gas generating apparatus comprises: a housing having an inner space with upper, lateral and lower wall portions, an exhaust gas supply unit having a supply port portion with a supply port, and an exhaust gas purifying unit having an entrance portion with an opening portion having an entrance surface and an outlet section which can be connected to an exhaust gas outlet, the housing partially enclosing the exhaust gas purification unit, the exhaust gas purification unit protruding from the lower wall area with its inlet section into the interior and its opening area facing the upper wall area and at least partially flushable by supplied exhaust gas and the supply opening area laterally Wall area is arranged, wherein Preferably, at least the greater part of the area of the supply opening-viewed in the flow direction of the exhaust gas-is arranged below the entry surface or the supply opening area is arranged in the lower wall area.
  • the inlet surface of the exhaust gas purification unit is not linearly flowed by the supplied exhaust gas.
  • the exhaust gas purification unit is at least partially free in the interior of the housing and is at least partially surrounded by exhaust gas.
  • a back pressure is generated by inflowing exhaust gas, which is reduced by deduction of the exhaust gas through the exhaust gas purification unit, wherein pressure fluctuations of the inflowing exhaust gas are passed on reduced to the opening portion of the exhaust gas purification unit and downstream components.
  • the invention makes it possible to keep the exhaust gas flow path between the exhaust gas purification unit and the exhaust gas generating unit low, since it can be dispensed with an exhaust gas supply pipe together with connection funnel.
  • components provided downstream of the exhaust gas purification unit such as, for example, a particle filter, can be arranged on them in such a way that they are optimally flown by the exhaust gas flow emerging from the exhaust gas purification unit.
  • the area of the supply opening-seen in the flow direction- is arranged completely below the entry surface, thus allowing a particularly low overall height.
  • more than 90%, 80%, 70%, 60% or 50% of the area of the feed opening is arranged below the entry surface.
  • Figure 1 is a schematic representation of an exhaust gas purification device with linear exhaust gas flow in a vertical sectional view.
  • FIG. 2 shows an inventive exhaust gas purification device according to a first embodiment in a vertical sectional view.
  • FIG 3 shows an inventive exhaust gas purification device according to a second embodiment in a vertical sectional view.
  • the exhaust gas purification device 10 includes an exhaust gas supply pipe 12, an exhaust gas purification unit 14, and an exhaust gas exhaust pipe 16. Between the exhaust gas supply pipe 12 and the exhaust gas purification unit 14, a hopper 18 is arranged to adjust the diameter of the exhaust gas supply pipe 12 to the larger diameter of the exhaust gas purification unit 14. In an interior of the housing 25, a substrate for exhaust treatment is arranged.
  • FIG. 2 shows a first embodiment of an exhaust gas purification device 34 according to the invention, which has an exhaust gas supply unit 36, a housing 38, an exhaust gas purification unit 40, a funnel 42 and an exhaust gas outlet 44.
  • the exhaust gas cleaning unit 40 has an inlet section with an opening area 48 for the exhaust gas-containing opening area and an outlet section 72. In the region of the outlet section 72, an outlet surface 73 is arranged with exhaust gas outlet openings 73a.
  • the exhaust gas cleaning unit 40 further comprises an exhaust gas treatment body, which is preferably enclosed by a tubular jacket plate with a housing wall 46.
  • the exhaust treatment body is, for example, a 3-way catalyst or an oxidation catalyst for a diesel engine.
  • the housing 38 is preferably tubular with a round or oval cross-section.
  • the housing 38 is gas-tight, preferably designed for a pressure up to 1 bar.
  • the housing 38 has an upper wall area 47, a lateral wall area 45 and a lower wall area 49.
  • the housing 38 may be arranged as in the embodiment shown in Figure 2 geodetically perpendicular, but also with a different orientation. In the latter case, the information upper, lateral and lower wall area as relative orientation of the wall areas 45, 47 and 49 to each other to understand.
  • the exhaust gas supply unit 36 is preferably tubular, and has a supply port region 35 with a supply port 37.
  • the exhaust-gas purification unit 40 projects from the lower wall region 49 into the interior 64 of the housing 38.
  • the opening region with the inlet surface 48 faces the upper wall region 47 and is at least partially surrounded by supplied exhaust gas.
  • the supply opening region 35 is arranged in the lateral wall region 45, wherein preferably at least the larger part of the surface of the supply opening 37 - viewed in the flow direction of the exhaust gas - below the inlet surface 48 is arranged.
  • the surface of the supply opening region 35 is preferably arranged completely below the entry surface 48, as viewed in the flow direction of the exhaust gas. However, it can also be provided that only parts of the surface of the feed opening 37 are arranged below the entry surface 48. Preferably, this is 50% or more. In particular, 60%, 70%, 80% or 90% of the surface of the feed opening 37 may be arranged below the entry surface 48.
  • An exhaust gas flow 55 passing through the opening 37 of the exhaust gas supply unit 36 strikes the housing wall 46 and is deflected in its flow direction.
  • Fig. 2 it is illustrated that the exhaust gas stream 55 flows into the upper region of the inner space 64 and the inlet surface 48 is applied. Due to inflowing exhaust gas, a dynamic pressure builds up in the interior space 64 and acts on the inlet surface 48. To reduce the back pressure, the exhaust gas passes through the inlet surface 48 of the opening region of the exhaust gas purification unit 40 and flows through it.
  • FIG. 2 of the exhaust gas supply unit 36 shows a second embodiment of an exhaust gas purification device 74 according to the invention is shown schematically in a vertical sectional view.
  • FIG. 3 For the sake of clarity, the same reference numerals are used in FIG. 3 for functionally identical components, and reference is made to the above description of FIG. 2 in this respect.
  • the exhaust gas purification device 74 has a modular structure and has a first module 75 with an exhaust gas supply unit 36, a housing 38, an exhaust gas purification unit 40 with an exhaust gas inlet surface 48 and an outlet region 72.
  • the outlet region 72 comprises an outlet surface 73 with outlet openings 73a.
  • a second module 77 Downstream of the first module 75, a second module 77 is arranged with a substrate 80, for example a particle filter.
  • the substrate 80 has an inlet surface 90 for exhaust gas and is arranged offset downstream, so that between the outlet surface 73 and the inlet surface 90, a space 76 is formed, into the exhaust gas 78 through the outlet openings 73 a flow and at least parts of the inlet surface 90 can act substantially vertically ,
  • the exhaust gas purification unit 40 has on the housing 46 one or more support elements which simultaneously form at least a portion of the lower wall region 49 and support the exhaust gas purification unit 40 in the housing 38.
  • the first module 75 and the second module 77 are separably connected gas-tight at an interface 84, as described in more detail below.
  • the housing 38 has first attachment regions 84a, the exhaust-gas module 77 has second attachment regions assigned thereto 84b, and the carrier element or the carrier elements have attachment regions 85 assigned to the first and second attachment regions 84a, 84b.
  • the attachment regions 85 can be arranged between the first and second attachment regions 84a, 84b.
  • the interface 84 may be implemented in other ways.
  • the emission control devices 34 or 74 purify exhaust gas produced by a gas generating unit.
  • the unit can be assigned to a motor vehicle or a rail vehicle or be a stationary unit.
  • the exhaust gas is preferably conveyed into the housing 38 via an exhaust gas turbocharger, in particular with an overpressure between 0 and 2.0 bar, 2.5 bar or 3.0 bar.
  • Outlet surface a outlet openings for exhaust gas

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Exhaust Gas After Treatment (AREA)
  • Processes For Solid Components From Exhaust (AREA)

Abstract

L'invention concerne un dispositif de purification des gaz d'échappement pour un organe producteur de gaz d'échappement, comprenant : un carter (38) qui présente un espace intérieur (64) avec une région de paroi supérieure (47), une région de paroi latérale (45) et une région de paroi inférieure (49) ; une unité (36) d'alimentation en gaz d'échappement qui présente une région d'ouverture d'alimentation (35) avec une ouverture d'alimentation (37) ; et une unité (40) de purification des gaz d'échappement, qui présente une partie d'entrée avec une région d'ouverture présentant une surface d'entrée (48), et une partie de sortie (72) pouvant être reliée à une conduite d'échappement. Le carter (38) entoure partiellement l'unité (40) de purification des gaz d'échappement. L'unité (40) de purification des gaz d'échappement s'enfonce par sa partie d'entrée dans l'espace intérieur (64) à partir de la région de paroi inférieure (49) et sa région d'ouverture fait face à la région de paroi supérieure (47), et les gaz d'échappement alimentés peuvent circuler autour d'elle. La région (35) d'ouverture d'alimentation est disposée dans la région de paroi latérale (45), sachant qu'au moins la majeure partie de la surface de l'ouverture d'alimentation (37) est disposée - considéré dans la direction d'écoulement des gaz d'échappement - en dessous de la surface d'entrée (48), ou bien la région (35) d'ouverture d'alimentation est disposée dans la région de paroi inférieure (49).
PCT/EP2007/009420 2006-11-24 2007-10-30 Dispositif de purification des gaz d'échappement WO2008061610A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200610055953 DE102006055953A1 (de) 2006-11-24 2006-11-24 Abgasreinigungsvorrichtung
DE102006055953,3 2006-11-24

Publications (1)

Publication Number Publication Date
WO2008061610A1 true WO2008061610A1 (fr) 2008-05-29

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2007/009420 WO2008061610A1 (fr) 2006-11-24 2007-10-30 Dispositif de purification des gaz d'échappement

Country Status (2)

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DE (1) DE102006055953A1 (fr)
WO (1) WO2008061610A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8713920B2 (en) 2009-06-12 2014-05-06 Emitec Gesellschaft Fuer Emissionstechnologie Mbh Exhaust gas treatment device for use near an engine and motor vehicle having the device
JP6299856B1 (ja) * 2016-12-16 2018-03-28 マツダ株式会社 エンジンの排気装置

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT201900007863A1 (it) * 2019-06-03 2020-12-03 Same Deutz Fahr Italia S P A Sistema catalizzatore dei gas di scarico

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3823550A1 (de) 1988-07-12 1990-01-18 Bayerische Motoren Werke Ag Fahrzeug-abgasanlage mit einem katalysatorkoerper
EP0731257A2 (fr) * 1991-08-30 1996-09-11 Briggs & Stratton Corporation Silencieux convertisseur catalytique combiné
EP1596044A1 (fr) * 2004-05-12 2005-11-16 Scania CV AB Dispositif de traitement de gaz d'échappement
US20060008397A1 (en) * 2003-01-14 2006-01-12 Emitec Gesellschaft Fur Emisionstechnologie Mbh Space-saving exhaust-gas aftertreatment unit with inflow and return-flow regions lying one inside the other and gas inlet and outlet on the same side
FR2878283A1 (fr) * 2004-11-22 2006-05-26 Faurecia Sys Echappement Dispositif de traitement des gaz d'echappement pour vehicule automobile et ligne d'echappement correspondante

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DK57996A (da) * 1996-05-15 1997-11-16 Silentor As Lyddæmper
DE19955013B4 (de) * 1999-11-16 2008-04-03 Volkswagen Ag Abgasanlage einer Verbrennungskraftmaschine
DE10155086A1 (de) * 2001-11-09 2003-05-28 Oberland Mangold Gmbh Katalysator-Filter-Anordnung und Verfahren zu ihrer Herstellung

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3823550A1 (de) 1988-07-12 1990-01-18 Bayerische Motoren Werke Ag Fahrzeug-abgasanlage mit einem katalysatorkoerper
EP0731257A2 (fr) * 1991-08-30 1996-09-11 Briggs & Stratton Corporation Silencieux convertisseur catalytique combiné
US20060008397A1 (en) * 2003-01-14 2006-01-12 Emitec Gesellschaft Fur Emisionstechnologie Mbh Space-saving exhaust-gas aftertreatment unit with inflow and return-flow regions lying one inside the other and gas inlet and outlet on the same side
EP1596044A1 (fr) * 2004-05-12 2005-11-16 Scania CV AB Dispositif de traitement de gaz d'échappement
FR2878283A1 (fr) * 2004-11-22 2006-05-26 Faurecia Sys Echappement Dispositif de traitement des gaz d'echappement pour vehicule automobile et ligne d'echappement correspondante

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8713920B2 (en) 2009-06-12 2014-05-06 Emitec Gesellschaft Fuer Emissionstechnologie Mbh Exhaust gas treatment device for use near an engine and motor vehicle having the device
US9341096B2 (en) 2009-06-12 2016-05-17 Emitec Gesellschaft Fuer Emissiontechnologie Mbh Exhaust gas treatment device for use near an engine and motor vehicle having the device
JP6299856B1 (ja) * 2016-12-16 2018-03-28 マツダ株式会社 エンジンの排気装置
JP2018096345A (ja) * 2016-12-16 2018-06-21 マツダ株式会社 エンジンの排気装置
WO2018110318A1 (fr) * 2016-12-16 2018-06-21 マツダ株式会社 Dispositif d'échappement de moteur

Also Published As

Publication number Publication date
DE102006055953A1 (de) 2008-05-29

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