FR2923534A1 - THERMAL ENGINE EXHAUST DEVICE - Google Patents

THERMAL ENGINE EXHAUST DEVICE Download PDF

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Publication number
FR2923534A1
FR2923534A1 FR0759027A FR0759027A FR2923534A1 FR 2923534 A1 FR2923534 A1 FR 2923534A1 FR 0759027 A FR0759027 A FR 0759027A FR 0759027 A FR0759027 A FR 0759027A FR 2923534 A1 FR2923534 A1 FR 2923534A1
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FR
France
Prior art keywords
exhaust device
conduit
secondary branch
exhaust
duct
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Withdrawn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
FR0759027A
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French (fr)
Inventor
Jerome Estienne
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.)
Renault SAS
Original Assignee
Renault SAS
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 Renault SAS filed Critical Renault SAS
Priority to FR0759027A priority Critical patent/FR2923534A1/en
Priority to EP08305797A priority patent/EP2060757A1/en
Publication of FR2923534A1 publication Critical patent/FR2923534A1/en
Withdrawn legal-status Critical Current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
    • F01N3/025—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 fuel burner or by adding fuel to exhaust
    • F01N3/0253—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 fuel burner or by adding fuel to exhaust adding fuel to exhaust gases
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/20—Mixing gases with liquids
    • B01F23/21—Mixing gases with liquids by introducing liquids into gaseous media
    • B01F23/213—Mixing gases with liquids by introducing liquids into gaseous media by spraying or atomising of the liquids
    • B01F23/2132—Mixing gases with liquids by introducing liquids into gaseous media by spraying or atomising of the liquids using nozzles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
    • B01F25/30—Injector mixers
    • B01F25/32—Injector mixers wherein the additional components are added in a by-pass of the main flow
    • 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
    • F01N13/08—Other arrangements or adaptations of exhaust conduits
    • 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
    • F01N3/2892—Exhaust flow directors or the like, e.g. upstream of catalytic device
    • 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
    • F01N3/36—Arrangements for supply of additional fuel
    • 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
    • F01N2240/20—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 a flow director or deflector
    • 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
    • F01N2410/00—By-passing, at least partially, exhaust from inlet to outlet of apparatus, to atmosphere or to other device

Landscapes

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

Abstract

Dispositif d'échappement de moteur thermique comprenant un conduit principal d'échappement (1) en direction d'un organe de dépollution (2) et des moyens d'injection de carburant (3) dans le conduit en amont de cet organe, caractérisé en ce que le flux des gaz d'échappement est partiellement dérivé en amont des moyens d'injection (3) dans une branche secondaire (4) rejoignant le conduit (1) avant l'organe de dépollution (2).Engine exhaust system comprising a main exhaust duct (1) in the direction of a depollution unit (2) and fuel injection means (3) in the duct upstream of this unit, characterized in that the flow of the exhaust gases is partially derived upstream of the injection means (3) in a secondary branch (4) joining the conduit (1) before the depollution device (2).

Description

DISPOSITIF D'ECHAPPEMENT DE MOTEUR THERMIQUE THERMAL ENGINE EXHAUST DEVICE

La présente invention se rapporte à l'échappement et au traitement des gaz d'échappement d'un moteur 5 thermique. Plus précisément, elle concerne un dispositif d'échappement de moteur thermique comprenant un conduit d'échappement en direction d'un organe de dépollution, et des moyens d'injection de carburant dans le conduit en 10 amont de cet organe. Cette invention trouve une application sur tout conduit d'échappement associé à un injecteur de carburant destiné à faciliter des réactions d'oxydation exothermiques au sein d'un premier organe de dépollution, 15 tel qu'un catalyseur d'oxydation, en vue d'amorcer la régénération d'un filtre à particules disposé en aval de celui-ci. L'implantation d'un injecteur à l'échappement afin d'amorcer la régénération du filtre à particules 20 nécessite des conditions particulières, pour effectuer une combustion homogène dans le filtre à particules. Un des principaux paramètres permettant une combustion homogène dans le filtre, est la répartition homogène du mélange air/carburant en entrée du filtre. La distance 25 séparant l'injecteur de l'entrée filtre, est généralement trop faible pour que le mélange air/carburant injecté soit bon. De nombreux artifices aérodynamiques sont donc utilisés pour améliorer le mélange. Toutefois, cette - 2 - amélioration est généralement obtenue au prix d'une augmentation de la perte de charge. La publication EP 1 022 048 montre par exemple un système de pales, insérées dans la ligne pour permettre le mélange du gaz air/carburant. Comme la majeure partie des solutions proposées, les pales engendrent néanmoins dans la ligne d'échappement, des pertes de charge non négligeables, avec risque de condensation partielle du carburant sur celles-ci. The present invention relates to exhaust and exhaust gas treatment of a thermal engine. More specifically, it relates to a heat engine exhaust device comprising an exhaust duct towards a pollution control member, and fuel injection means in the duct upstream of this body. This invention finds application to any exhaust duct associated with a fuel injector for facilitating exothermic oxidation reactions within a first depolluting member, such as an oxidation catalyst, for the purpose of initiate the regeneration of a particulate filter disposed downstream thereof. The introduction of an injector to the exhaust in order to initiate the regeneration of the particulate filter 20 requires particular conditions, to perform a homogeneous combustion in the particulate filter. One of the main parameters for homogeneous combustion in the filter is the homogeneous distribution of the air / fuel mixture at the inlet of the filter. The distance separating the injector from the filter inlet is generally too small for the injected air / fuel mixture to be good. Many aerodynamic devices are used to improve the mixture. However, this improvement is generally obtained at the cost of an increase in the pressure drop. The publication EP 1 022 048 shows for example a system of blades, inserted in the line to allow mixing of the air / fuel gas. As most of the proposed solutions, the blades nevertheless generate in the exhaust line, significant losses of load, with risk of partial condensation of fuel thereon.

La présente invention vise à mélanger le carburant injecté dans la ligne échappement, en limitant les pertes de charge induites. Dans ce but, elle propose que le flux des gaz d'échappement soit partiellement dérivé en amont des moyens d'injection, dans une branche secondaire rejoignant le conduit avant l'organe de dépollution. De préférence, le conduit présente une restriction de section, au niveau du raccordement de la branche secondaire sur celui-ci. The present invention aims to mix the fuel injected into the exhaust line, limiting the pressure losses induced. For this purpose, it proposes that the flow of the exhaust gas is partially derived upstream of the injection means, in a secondary branch joining the conduit before the depollution device. Preferably, the conduit has a section restriction, at the connection of the secondary branch thereon.

Une telle restriction peut avantageusement être placée au départ d'un cône d'entrée de l'organe de dépollution. D'autres caractéristiques et avantages de la présente invention seront mieux compris à la lecture de 25 la description suivante d'un mode de réalisation non limitatif de celle-ci, en se reportant aux dessins annexés, sur lesquels : - la figure 1 se rapporte à un premier mode de réalisation de l'invention, - 3 - - la figure 2 se rapporte à un deuxième mode de réalisation de l'invention, et - les figures 3A et 3B illustrent deux variantes de ces modes de réalisations Le conduit d'échappement 1 montré sur les figures, présente un coude lb. Avant ce coude, on trouve un injecteur 3 de carburant à l'échappement, parfois appelé cinquième injecteur . Il est destiné à favoriser des réactions d'oxydation exothermiques au sein d'un organe de dépollution 2, tel qu'un catalyseur d'oxydation, disposé derrière le coude lb. Ce premier organe de dépollution peut être suivi d'un deuxième organe de dépollution (non représenté), tel qu'un filtre à particules. Dans cette configuration, les réactions exothermiques du catalyseur d'oxydation assurent notamment l'amorçage du filtre à particules. Le dispositif décrit comprend donc un conduit principal d'échappement 1 en direction d'un organe de dépollution, et des moyens d'injection de carburant 3 dans le conduit en amont de cet organe. Le flux des gaz d'échappement est partiellement dérivé, en amont des moyens d'injection, dans une branche secondaire 4 rejoignant le conduit 1 avant l'organe de dépollution 2, par exemple au départ d'un cône d'entrée 2a du catalyseur 2. Le gaz dérivé dans le conduit 4, de préférence, de section inférieure à la section du conduit principal 2, est réintroduit dans le conduit principal 1, entre l'injecteur 3 et l'entrée 2a du catalyseur. Le flux - 4 - dérivé forme à son arrivée un angle a, avec le flux principal. Cet angle est choisi de manière à casser le plus possible la structure linéaire du flux principal, et à mélanger dans les meilleures conditions le carburant injecté, avec le gaz d'échappement. La section de la branche secondaire de dérivation 4 étant plus petite que celle du conduit principal, il est utile de créer dans le conduit 1, une aspiration propre à favoriser le flux dans la dérivation. Cette aspiration est obtenue grâce à une restriction de section la, au niveau du raccordement 4b de la branche secondaire 4 sur celui-ci. La branche secondaire 4 rejoint donc de préférence le conduit principal 1 au niveau d'une restriction la de celui-ci. La restriction la accélère le flux dans le conduit principal 1, et diminue la pression statique à l'arrivée de la branche secondaire 4, de manière à faciliter l'introduction, et le mélange, de celui-ci dans le flux principal. Comme indiqué sur les figures 3A et 3B, la section de la branche de dérivation 4 peut s'ajouter à celle du conduit 1 à partir de son piquage 4a sur celui-ci (figure 3A), ou se soustraire à celle du conduit à partir de son piquage 4a sur celui-ci (figure 3B). La deuxième configuration, favorise davantage l'amorçage du flux secondaire l'air dérivé bénéficie en effet pleinement de la vitesse d'entraînement du flux principal. Cette configuration augmente le débit dans la branche secondaire 4, mais elle diminue la section du flux principal, avec, dans ce cas, des risques de - 5 - perturbation de l'écoulement dans le conduit 1, et d'augmentation des pertes de charge. La figure 3 présente une variante de l'invention, selon laquelle le piquage 4a de la branche secondaire 2 sur le conduit 1 est situé en amont de la turbine 6 d'un turbocompresseur. Cette disposition vise à profiter d'une aspiration plus élevée sur la branche secondaire 4, dans le cas d'un moteur turbocompressé. En effet, avec un turbocompresseur, la pression avant la turbine est plus élevée en amont qu'en aval de la turbine. Ainsi, la pression d'entrée dans la branche secondaire, est supérieure à sa pression de sortie. Cependant, le débit prélevé en amont de la turbine, peut diminuer l'énergie de la turbine fournie au compresseur. Such a restriction may advantageously be placed at the start of an inlet cone of the depollution device. Other features and advantages of the present invention will be better understood on reading the following description of a nonlimiting embodiment thereof, with reference to the appended drawings, in which: FIG. In a first embodiment of the invention, FIG. 2 relates to a second embodiment of the invention, and FIGS. 3A and 3B illustrate two variants of these embodiments. Exhaust 1 shown in the figures, has a bend lb. Before this bend, there is a fuel injector 3 exhaust, sometimes called fifth injector. It is intended to promote exothermic oxidation reactions in a pollution control member 2, such as an oxidation catalyst, disposed behind the elbow 1b. This first depollution device may be followed by a second depollution device (not shown), such as a particulate filter. In this configuration, the exothermic reactions of the oxidation catalyst notably ensure the priming of the particulate filter. The device thus described comprises a main exhaust pipe 1 in the direction of a depollution device, and fuel injection means 3 in the pipe upstream of this device. The flow of the exhaust gas is partially derived, upstream of the injection means, in a secondary branch 4 joining the conduit 1 before the pollution control member 2, for example from an inlet cone 2a of the catalyst 2. The gas derived in the duct 4, preferably of lower section to the section of the main duct 2, is reintroduced into the main duct 1, between the injector 3 and the inlet 2a of the catalyst. The flux-4-derivative forms at its arrival an angle a, with the main flow. This angle is chosen so as to break as much as possible the linear structure of the main flow, and mix in the best conditions the injected fuel with the exhaust gas. The section of the branch branch branch 4 being smaller than that of the main conduit, it is useful to create in the conduit 1, a suction to promote the flow in the branch. This suction is obtained by virtue of a restriction of section 1a, at the connection 4b of the secondary branch 4 thereon. The secondary branch 4 therefore preferably joins the main conduit 1 at a restriction 1a thereof. The restriction accelerates the flow in the main duct 1, and decreases the static pressure at the arrival of the secondary branch 4, so as to facilitate the introduction, and mixing, of it in the main flow. As indicated in FIGS. 3A and 3B, the section of branch branch 4 can be added to that of conduit 1 from its tapping 4a thereon (FIG. 3A), or it can be evaded from that of the conduit from its stitch 4a on it (Figure 3B). The second configuration, more favors the priming of the secondary flow the derived air indeed benefits fully from the drive speed of the main flow. This configuration increases the flow rate in the secondary branch 4, but it reduces the section of the main flow, with, in this case, risks of disturbance of the flow in the duct 1, and of the increase in pressure losses. . FIG. 3 shows a variant of the invention, according to which the tapping 4a of the secondary branch 2 on the conduit 1 is situated upstream of the turbine 6 of a turbocharger. This provision aims to take advantage of a higher suction on the secondary branch 4, in the case of a turbocharged engine. Indeed, with a turbocharger, the pressure before the turbine is higher upstream than downstream of the turbine. Thus, the inlet pressure in the secondary branch is greater than its outlet pressure. However, the flow taken upstream of the turbine can reduce the energy of the turbine supplied to the compressor.

La dérivation du flux de gaz d'échappement tire profit du coude lb. En effet, le piquage 4a et le raccordement 4b de la branche secondaire 4, sont disposés de part et d'autre de celui-ci. Lors du regroupement des flux principal et secondaire, le carburant se mélange aux gaz d'échappement sans artifice de type pâles ou hélices. Les pertes de charges sont donc réduites, et le conduit ne renferme aucun élément additionnel susceptible de favoriser la condensation du carburant. The bypass of the exhaust flow takes advantage of the elbow lb. Indeed, the stitching 4a and the connection 4b of the secondary branch 4, are arranged on either side thereof. When grouping the main and secondary streams, the fuel mixes with the exhaust fumes without artifice of pale type or propellers. The pressure losses are reduced, and the conduit contains no additional element likely to promote condensation of fuel.

Claims (9)

REVENDICATIONS 1. Dispositif d'échappement de moteur thermique comprenant un conduit principal d'échappement (1) en direction d'un organe de dépollution (2) et des moyens d'injection de carburant (3) dans le conduit en amont de cet organe, caractérisé en ce que le flux des gaz d'échappement est partiellement dérivé en amont des moyens d'injection (3) dans une branche secondaire (4) rejoignant le conduit (1) avant l'organe de dépollution (2). A heat engine exhaust device comprising a main exhaust duct (1) in the direction of a depollution unit (2) and fuel injection means (3) in the duct upstream of this unit, characterized in that the flow of exhaust gas is partially derived upstream of the injection means (3) in a secondary branch (4) joining the conduit (1) before the depollution member (2). 2. Dispositif d'échappement selon la revendication 1, caractérisé en ce que la branche secondaire (4) rejoint le conduit principal (1) au niveau d'une restriction (la) de celui-ci. 2. Exhaust device according to claim 1, characterized in that the secondary branch (4) joins the main conduit (1) at a restriction (la) thereof. 3. Dispositif d'échappement selon la revendication 2, caractérisé en ce que la restriction (la) est placée au départ d'un cône d'entrée (2a) de l'organe de dépollution (2). 3. Exhaust device according to claim 2, characterized in that the restriction (la) is placed at the start of an inlet cone (2a) of the pollution control member (2). 4. Dispositif d'échappement selon la revendication 1, 2 ou 3, caractérisé en ce que la section de la branche secondaire (4) s'ajoute à celle du conduit (1) à partir de son piquage (4a) sur celui-ci. 4. Exhaust device according to claim 1, 2 or 3, characterized in that the section of the secondary branch (4) is added to that of the conduit (1) from its stitching (4a) thereon . 5. Dispositif d'échappement selon la revendication 1, 2 ou 3, caractérisé en ce que la section de la branche secondaire (4) se soustrait à celle du conduit à partir de son piquage (4a) sur celui-ci. 5. Exhaust device according to claim 1, 2 or 3, characterized in that the section of the secondary branch (4) is subtracted from that of the conduit from its stitching (4a) thereon. 6. Dispositif d'échappement selon la revendication 4 ou 5, caractérisé en ce que le piquage (4a) est situé en amont de la turbine (6) d'un turbocompresseur. 6. Exhaust device according to claim 4 or 5, characterized in that the stitching (4a) is located upstream of the turbine (6) of a turbocharger. 7. Dispositif d'échappement selon l'une des revendications précédentes, caractérisé en ce que le piquage (4a) et le raccordement (4b) de la branche secondaire (4) sont disposés de part et d'autre d'un coude (lb) du conduit. 7. Exhaust device according to one of the preceding claims, characterized in that the stitching (4a) and the connection (4b) of the secondary branch (4) are arranged on either side of a bend (lb). ) of the duct. 8. Dispositif d'échappement selon la revendication 10 4, 5 ou 6, caractérisé en ce que l'organe de dépollution (2) est un catalyseur d'oxydation. 8. Exhaust device according to claim 4, 5 or 6, characterized in that the pollution control member (2) is an oxidation catalyst. 9. Dispositif d'échappement selon l'une des revendications précédentes, caractérisé en ce que l'organe de dépollution (2) est suivi d'un filtre à 15 particules. 9. Exhaust device according to one of the preceding claims, characterized in that the pollution control member (2) is followed by a particle filter.
FR0759027A 2007-11-14 2007-11-14 THERMAL ENGINE EXHAUST DEVICE Withdrawn FR2923534A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
FR0759027A FR2923534A1 (en) 2007-11-14 2007-11-14 THERMAL ENGINE EXHAUST DEVICE
EP08305797A EP2060757A1 (en) 2007-11-14 2008-11-12 Exhaust device for a heat engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0759027A FR2923534A1 (en) 2007-11-14 2007-11-14 THERMAL ENGINE EXHAUST DEVICE

Publications (1)

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FR2923534A1 true FR2923534A1 (en) 2009-05-15

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FR (1) FR2923534A1 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5855430B2 (en) * 2011-11-16 2016-02-09 日野自動車株式会社 Exhaust purification equipment

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EP1022048A1 (en) * 1999-01-21 2000-07-26 Man Nutzfahrzeuge Ag Process and device for metering a reducing agent
JP2002021540A (en) * 2000-07-04 2002-01-23 Mitsubishi Automob Eng Co Ltd Exhaust emission control device
JP2003013730A (en) * 2001-06-28 2003-01-15 Mitsubishi Motors Corp Exhaust emission purifier of internal combustion engine
FR2861132A1 (en) * 2003-10-17 2005-04-22 Renault Sa Thermal engine with turbocompressor and means of reducing start-up time for exhaust catalyst from cold starting includes pipe which can bypass turbocompressor turbine
FR2892449A1 (en) * 2005-10-21 2007-04-27 Renault Sas Exhaust line for diesel engine of vehicle, has mixer with compartment defining cylindrical mixing volume that has inlet tangential to volume and outlet distant from inlet so as to create swirl type rotation of exhaust gas in volume
JP2007270703A (en) * 2006-03-31 2007-10-18 Toyota Motor Corp Exhaust emission control device of internal combustion engine
FR2900195A3 (en) * 2006-04-24 2007-10-26 Renault Sas Internal combustion engine`s exhaust gas treating assembly for motor vehicle, has flap movable between positions in which flap permits/does not permit gas flow in by-pass pipe, respectively, and injector associated with air injection

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1022048A1 (en) * 1999-01-21 2000-07-26 Man Nutzfahrzeuge Ag Process and device for metering a reducing agent
JP2002021540A (en) * 2000-07-04 2002-01-23 Mitsubishi Automob Eng Co Ltd Exhaust emission control device
JP2003013730A (en) * 2001-06-28 2003-01-15 Mitsubishi Motors Corp Exhaust emission purifier of internal combustion engine
FR2861132A1 (en) * 2003-10-17 2005-04-22 Renault Sa Thermal engine with turbocompressor and means of reducing start-up time for exhaust catalyst from cold starting includes pipe which can bypass turbocompressor turbine
FR2892449A1 (en) * 2005-10-21 2007-04-27 Renault Sas Exhaust line for diesel engine of vehicle, has mixer with compartment defining cylindrical mixing volume that has inlet tangential to volume and outlet distant from inlet so as to create swirl type rotation of exhaust gas in volume
JP2007270703A (en) * 2006-03-31 2007-10-18 Toyota Motor Corp Exhaust emission control device of internal combustion engine
FR2900195A3 (en) * 2006-04-24 2007-10-26 Renault Sas Internal combustion engine`s exhaust gas treating assembly for motor vehicle, has flap movable between positions in which flap permits/does not permit gas flow in by-pass pipe, respectively, and injector associated with air injection

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