FR2860035A1 - Exhaust assembly for overfed heat engine, has wall joint that is provided between exhaust gas collector and conical divergent pipe connected to primary catalyst - Google Patents

Exhaust assembly for overfed heat engine, has wall joint that is provided between exhaust gas collector and conical divergent pipe connected to primary catalyst Download PDF

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Publication number
FR2860035A1
FR2860035A1 FR0311037A FR0311037A FR2860035A1 FR 2860035 A1 FR2860035 A1 FR 2860035A1 FR 0311037 A FR0311037 A FR 0311037A FR 0311037 A FR0311037 A FR 0311037A FR 2860035 A1 FR2860035 A1 FR 2860035A1
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France
Prior art keywords
exhaust
exhaust gas
conical duct
assembly
primary catalyst
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Granted
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FR0311037A
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French (fr)
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FR2860035B1 (en
Inventor
Eric Dumas
Pascal Hottebart
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Renault SAS
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Renault SAS
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Publication of FR2860035A1 publication Critical patent/FR2860035A1/en
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Publication of FR2860035B1 publication Critical patent/FR2860035B1/en
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • F01N13/18—Construction facilitating manufacture, assembly, or disassembly
    • F01N13/1838—Construction facilitating manufacture, assembly, or disassembly characterised by the type of connection between parts of exhaust or silencing apparatus, e.g. between housing and tubes, between tubes and baffles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • F01N13/009—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00 having two or more separate purifying devices arranged in series
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • F01N13/009—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
    • F01N13/0093—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 of the same type
    • 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
    • F01N13/10—Other arrangements or adaptations of exhaust conduits of exhaust manifolds
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • F01N13/18—Construction facilitating manufacture, assembly, or disassembly
    • F01N13/1805—Fixing exhaust manifolds, exhaust pipes or pipe sections to each other, to engine or to vehicle body
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • F01N13/18—Construction facilitating manufacture, assembly, or disassembly
    • F01N13/1888—Construction facilitating manufacture, assembly, or disassembly the housing of the assembly consisting of two or more parts, e.g. two half-shells
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
    • F01N3/18—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control
    • F01N3/20—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control specially adapted for catalytic conversion ; Methods of operation or control of catalytic converters
    • 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
    • F01N5/00—Exhaust or silencing apparatus combined or associated with devices profiting by exhaust energy
    • F01N5/02—Exhaust or silencing apparatus combined or associated with devices profiting by exhaust energy the devices using heat
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B37/00—Engines characterised by provision of pumps driven at least for part of the time by exhaust
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B37/00—Engines characterised by provision of pumps driven at least for part of the time by exhaust
    • F02B37/02—Gas passages between engine outlet and pump drive, e.g. reservoirs
    • 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
    • F01N2260/00—Exhaust treating devices having provisions not otherwise provided for
    • F01N2260/08—Exhaust treating devices having provisions not otherwise provided for for preventing heat loss or temperature drop, using other means than layers of heat-insulating material
    • 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies

Landscapes

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

Abstract

The assembly has an exhaust gas collector (3) that is connected to an input of a turbine of a turbocharger (5). An output is connected from the turbocharger to a primary catalyst (7) through a conical convergent pipe (8), which is connected to a main catalyst. A wall joint (15) is provided between an exhaust gas collector and a conical divergent pipe connected to the primary catalyst. An independent claim is also included for an overfed heat engine.

Description

La présente invention concerne un ensemble d'échappement pour moteurThe present invention relates to an exhaust assembly for an engine

thermique suralimenté.supercharged thermal.

L'invention vise également un moteur thermique équipé d'un tel ensemble d'échappement.  The invention also relates to a heat engine equipped with such an exhaust assembly.

La figure 1 est une vue schématique montrant l'avant d'un moteur thermique équipé d'un ensemble d'échappement selon l'état de la technique.  Figure 1 is a schematic view showing the front of a heat engine equipped with an exhaust assembly according to the state of the art.

La figure 2 est une vue de dessus du moteur thermique équipé de l'ensemble d'échappement selon la figure 1.  FIG. 2 is a view from above of the heat engine equipped with the exhaust assembly according to FIG.

Les figures 1 et 2 ci-dessus montrent un moteur thermique suralimenté comprenant un bloc cylindre 1, une culasse 2 et un collecteur de gaz d'échappement 3 relié par une tubulure 4 à l'entrée de la turbine d'un turbocompresseur 5. La sortie de ce dernier est reliée par un conduit conique divergent 6 à un catalyseur primaire 7 dont la sortie est reliée à un conduit conique convergent 8 relié par un tube 9 à un catalyseur principal 10, par l'intermédiaire d'un flexible 11 et d'un raccord 12. La sortie du catalyseur 10 est reliée par un tube 13 à un pot de détente et un silencieux qui débouche dans l'atmosphère.  Figures 1 and 2 above show a supercharged engine comprising a cylinder block 1, a cylinder head 2 and an exhaust manifold 3 connected by a pipe 4 to the turbine inlet of a turbocharger 5. The its outlet is connected by a diverging conical duct 6 to a primary catalyst 7, the outlet of which is connected to a convergent conical duct 8 connected by a tube 9 to a main catalyst 10, via a flexible hose 11 and a 12. The outlet of the catalyst 10 is connected by a tube 13 to a pressure vessel and a silencer which opens into the atmosphere.

On sait que les catalyseurs 7 et 10 ne sont efficaces que lorsque la matière catalytique qu'ils renferment atteint une température de l'ordre de 700 à 900 C. Cette température n'est atteinte après démarrage du moteur qu'après quelques minutes de fonctionnement du moteur. Ainsi, pendant cette période, les gaz d'échappement s'échappent dans l'atmosphère sans être dépollués.  Catalysts 7 and 10 are known to be effective only when the catalytic material they contain reaches a temperature of the order of 700 to 900 C. This temperature is reached after starting the engine only after a few minutes of operation. of the motor. Thus, during this period, the exhaust gases escape into the atmosphere without being cleaned.

Cet inconvénient est dû au fait que les gaz d'échappement parcourent une distance relativement importante et se refroidissent avant d'atteindre les catalyseurs, étant donné notamment que le cône d'entrée 6 du catalyseur 7 est en contact avec l'atmosphère.  This disadvantage is due to the fact that the exhaust gases travel a relatively long distance and cool before reaching the catalysts, especially since the inlet cone 6 of the catalyst 7 is in contact with the atmosphere.

Par ailleurs, l'ensemble constitué par la tubulure 4, le turbocompresseur 5, le cône d'entrée 6 et le catalyseur primaire 7 disposé sur l'un des côtés du moteur est relativement encombrant.  Furthermore, the assembly consisting of the pipe 4, the turbocharger 5, the inlet cone 6 and the primary catalyst 7 disposed on one side of the engine is relatively bulky.

Le but de la présente invention est de réduire l'encombrement de l'ensemble d'échappement ci-dessus tout en réduisant la pollution engendrée par les gaz d'échappement après les démarrages à froid du moteur thermique.  The object of the present invention is to reduce the overall size of the exhaust assembly above while reducing the pollution generated by the exhaust gas after cold starts of the engine.

Suivant l'invention, l'ensemble d'échappement d'un moteur thermique suralimenté comprenant un collecteur de gaz d'échappement relié à l'entrée de la turbine d'un turbocompresseur dont la sortie est reliée par un conduit conique divergent à un catalyseur primaire dont la sortie est reliée à un conduit conique convergent lui-même relié par un tube à un catalyseur principal est caractérisé en ce que cet ensemble comprend une liaison physique directe entre le collecteur de gaz d'échappement et le conduit conique divergent relié au catalyseur primaire.  According to the invention, the exhaust assembly of a supercharged engine comprising an exhaust gas manifold connected to the inlet of the turbine of a turbocharger whose output is connected by a diverging conical duct to a catalyst primary outlet whose outlet is connected to a convergent conical duct itself connected by a tube to a main catalyst is characterized in that this assembly comprises a direct physical connection between the exhaust gas manifold and the divergent conical duct connected to the catalyst primary.

Cette liaison physique directe entre le collecteur et le conduit conique ci-dessus permet de réaliser un échange thermique direct entre ces deux parties et de réduire ainsi les déperditions thermiques engendrant un refroidissement des gaz d'échappement avant leur arrivée dans le catalyseur primaire, lors des démarrages à froid du moteur thermique.  This direct physical connection between the collector and the conical duct above makes it possible to carry out a direct thermal exchange between these two parts and thus to reduce the heat losses generating a cooling of the exhaust gases before their arrival in the primary catalyst, during the cold starts of the engine.

De plus, la liaison physique ci-dessus a pour effet de rapprocher le conduit conique précité du collecteur d'échappement et ainsi de réduire l'encombrement de l'ensemble d'échappement à proximité du moteur thermique.  In addition, the above physical link has the effect of bringing the aforementioned conical duct of the exhaust manifold and thus reduce the overall size of the exhaust assembly near the engine.

De préférence, ladite liaison physique est constituée par une paroi commune qui établit une relation d'échange thermique entre le collecteur de gaz d'échappement et ledit conduit conique divergent.  Preferably, said physical connection is constituted by a common wall which establishes a heat exchange relationship between the exhaust gas manifold and said diverging conical duct.

Selon d'autres caractéristiques avantageuses de l'invention: - ladite paroi commune comporte une partie prépondérante qui s'étend sensiblement parallèlement à la longueur du collecteur de gaz d'échappement, - ledit conduit conique divergent comporte une partie latérale qui s'étend en regard du collecteur de gaz d'échappement et qui est directement reliée à la surface extérieure de ce collecteur, - ladite partie latérale du conduit conique divergent porte une demi- coquille d'assemblage qui est assemblée avec une demi-coquille qui est portée par le collecteur de gaz d'échappement.  According to other advantageous features of the invention: said common wall comprises a preponderant part which extends substantially parallel to the length of the exhaust gas manifold, said divergent conical duct comprises a lateral part which extends in exhaust manifold and which is directly connected to the outer surface of this manifold, - said lateral part of the diverging conical duct carries an assembly half-shell which is assembled with a half-shell which is supported by the exhaust manifold.

Les caractéristiques ci-dessus permettent d'atteindre les objectifs de l'invention, à savoir la réduction de l'encombrement et de rendre les catalyseurs efficaces plus rapidement, en réduisant la pollution, après les démarrages à froid du moteur.  The above characteristics make it possible to achieve the objectives of the invention, namely the reduction of the space requirement and to make the catalysts more efficient, by reducing the pollution, after the cold starts of the engine.

D'autres particularités et avantages de l'invention apparaîtront encore dans la description qui suit.  Other features and advantages of the invention will become apparent from the description which follows.

Aux dessins annexés, donnés à titre d'exemples non limitatifs: Les figures 3 et 4 sont des vues analogues aux figures 1 et 2, illustrant un ensemble d'échappement selon l'invention.  In the accompanying drawings, given by way of non-limiting examples: FIGS. 3 and 4 are views similar to FIGS. 1 and 2, illustrating an exhaust assembly according to the invention.

L'ensemble d'échappement représenté sur les figures 3 et 4 comporte des parties identiques à celles de l'ensemble connu représenté sur les figures 1 et 2.  The exhaust assembly shown in FIGS. 3 and 4 comprises parts identical to those of the known assembly represented in FIGS. 1 and 2.

Ces parties identiques comportent des références identiques à celles des figures 1 et 2 et leur description ne sera par conséquent pas reprise.  These identical parts have identical references to those of Figures 1 and 2 and their description will therefore not be repeated.

Comme indiqué sur les figures 3 et 4, l'ensemble d'échappement selon l'invention, comprend une liaison physique directe 15 entre le collecteur 3 de gaz d'échappement et le conduit conique divergent 6 relié au catalyseur primaire 7.  As indicated in FIGS. 3 and 4, the exhaust assembly according to the invention comprises a direct physical connection 15 between the exhaust gas manifold 3 and the diverging conical duct 6 connected to the primary catalyst 7.

La figure 4 montre plus clairement que la liaison physique 15 est constituée par une paroi commune qui établit une relation d'échange thermique entre le collecteur 3 de gaz d'échappement et le conduit conique divergent 6.  FIG. 4 shows more clearly that the physical link 15 consists of a common wall which establishes a heat exchange relation between the exhaust gas manifold 3 and the diverging conical duct 6.

La figure 4 montre d'autre part que la paroi commune 15 comporte une partie prépondérante qui s'étend sensiblement parallèlement à la longueur du collecteur 3 de gaz d'échappement. En outre, les axes du turbocompresseur 5, du conduit conique 6, du catalyseur 7 sont situés dans des plans sensiblement parallèles à l'axe du collecteur 3 et celui de la culasse 2.  FIG. 4 shows, on the other hand, that the common wall 15 has a preponderant part which extends substantially parallel to the length of the exhaust gas manifold 3. In addition, the axes of the turbocharger 5, the conical duct 6, the catalyst 7 are located in planes substantially parallel to the axis of the collector 3 and that of the yoke 2.

Plus précisément, dans l'exemple représenté le conduit conique divergent 6 comporte une partie latérale qui s'étend en regard du collecteur 3 de gaz d'échappement et qui est directement reliée à la surface extérieure de ce collecteur 3. Autrement dit, le conduit conique 6 est en partie intégré au collecteur 3.  More precisely, in the example shown, the diverging conical duct 6 comprises a lateral part which extends opposite the exhaust gas manifold 3 and which is directly connected to the external surface of this manifold 3. In other words, the duct conical part 6 is partly integrated in the collector 3.

Cette partie latérale du conduit conique divergent 6 pourrait porter une demi-coquille d'assemblage qui pourrait être assemblée avec une demicoquille portée par le collecteur 3 de gaz d'échappement.  This side portion of the diverging conical duct 6 could carry an assembly half-shell which could be assembled with a half-cup carried by the exhaust manifold 3.

En comparant les figures 3 et 4 avec les figures 1 et 2, on constate que l'ensemble d'échappement selon l'invention, est au voisinage du moteur, beaucoup plus compact que l'ensemble d'échappement connu selon l'état de la technique.  Comparing FIGS. 3 and 4 with FIGS. 1 and 2, it can be seen that the exhaust assembly according to the invention is in the vicinity of the engine, much more compact than the known exhaust assembly according to the state of the invention. the technique.

De plus, la figure 4 en particulier montre que les gaz d'échappement entrant dans le conduit conique 6 qui précède le catalyseur primaire 7 bénéficient de l'échange thermique avec le collecteur 3. En conséquence, lors des démarrages à froid du moteur la matière catalytique contenue dans les catalyseurs 7 et 10 atteint plus rapidement sa température maximale d'efficacité. Et le cas échéant, on peut réduire la quantité de la matière précieuse de ces catalyseurs et diminuer ainsi le coût de ceux- ci.  In addition, FIG. 4 in particular shows that the exhaust gases entering the conical duct 6 which precedes the primary catalyst 7 benefit from the heat exchange with the collector 3. Consequently, during cold starts of the engine the material Catalyst contained in the catalysts 7 and 10 reaches its maximum temperature of efficiency more rapidly. And if necessary, one can reduce the amount of the precious material of these catalysts and thus reduce the cost thereof.

Claims (6)

REVENDICATIONS 1. Ensemble d'échappement d'un moteur thermique suralimenté comprenant un collecteur de gaz d'échappement (3) relié à l'entrée de la turbine d'un turbocompresseur (5) dont la sortie est reliée par un conduit conique divergent (6) à un catalyseur primaire (7) dont la sortie est reliée à un conduit conique convergent (8) lui-même relié par un tube (9) à un catalyseur principal (10), caractérisé en ce que cet ensemble comprend une liaison physique (15) directe entre le collecteur (3) de gaz d'échappement et le conduit conique divergent (6) relié au catalyseur primaire (7).  An exhaust assembly of a supercharged engine comprising an exhaust manifold (3) connected to the turbine inlet of a turbocharger (5) whose output is connected by a diverging conical duct (6). ) to a primary catalyst (7) whose output is connected to a conical conical duct (8) itself connected by a tube (9) to a main catalyst (10), characterized in that this assembly comprises a physical connection ( 15) directly between the exhaust gas manifold (3) and the diverging conical duct (6) connected to the primary catalyst (7). 2. Ensemble d'échappement selon la revendication 1, caractérisé en ce que ladite liaison physique est constituée par une paroi commune (15) qui établit une relation d'échange thermique entre le collecteur de gaz d'échappement (3) et ledit conduit conique divergent (6).  2. exhaust assembly according to claim 1, characterized in that said physical connection is constituted by a common wall (15) which establishes a heat exchange relationship between the exhaust gas manifold (3) and said conical duct differ (6). 3. Ensemble d'échappement selon la revendication 2, caractérisé en ce que ladite paroi commune (15) comporte une partie prépondérante qui s'étend sensiblement parallèlement à la longueur du collecteur de gaz d'échappement (3).  3. exhaust assembly according to claim 2, characterized in that said common wall (15) has a preponderant portion which extends substantially parallel to the length of the exhaust gas manifold (3). 4. Ensemble d'échappement selon l'une des revendications 1 à 3, caractérisé en ce que ledit conduit conique divergent (6) comporte une partie latérale qui s'étend en regard du collecteur de gaz d'échappement (3) et qui est directement reliée à la surface extérieure de ce collecteur (3).  4. exhaust assembly according to one of claims 1 to 3, characterized in that said diverging conical duct (6) has a lateral portion which extends opposite the exhaust gas manifold (3) and which is directly connected to the outer surface of this collector (3). 5. Ensemble d'échappement selon la revendication 4, caractérisé en ce que ladite partie latérale du conduit conique divergent (6) porte une demicoquille d'assemblage qui est assemblée avec une demi-coquille qui est portée par le collecteur de gaz d'échappement (3).  5. Exhaust assembly according to claim 4, characterized in that said side portion of the diverging conical duct (6) carries a coupling half assembly which is assembled with a half-shell which is carried by the exhaust manifold (3). 6. Moteur thermique suralimenté équipé d'un ensemble d'échappement  6. Supercharged engine with exhaust system selon l'une des revendications 1 à 5.  according to one of claims 1 to 5.
FR0311037A 2003-09-19 2003-09-19 EXHAUST ASSEMBLY OF A SUPERIOR THERMAL ENGINE Expired - Fee Related FR2860035B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR0311037A FR2860035B1 (en) 2003-09-19 2003-09-19 EXHAUST ASSEMBLY OF A SUPERIOR THERMAL ENGINE

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0311037A FR2860035B1 (en) 2003-09-19 2003-09-19 EXHAUST ASSEMBLY OF A SUPERIOR THERMAL ENGINE

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Publication Number Publication Date
FR2860035A1 true FR2860035A1 (en) 2005-03-25
FR2860035B1 FR2860035B1 (en) 2005-11-11

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Cited By (2)

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Publication number Priority date Publication date Assignee Title
WO2007034099A1 (en) * 2005-09-23 2007-03-29 Renault Sport Technologies Exhaust device for internal combustion engine
EP2075424A1 (en) * 2007-12-27 2009-07-01 Honda Motor Co., Ltd. Catalyst arrangement construction of motorcycle

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US3824788A (en) * 1972-04-26 1974-07-23 Gen Motors Corp Internal combustion engine and method of operation for exhaust emission control
EP0806554A1 (en) * 1996-05-10 1997-11-12 Renault Exhaust system for internal combustion engines
US5934070A (en) * 1996-06-28 1999-08-10 Daimler-Benz A.G. Exhaust gas turbocharger and exhaust gas manifold arrangement on an internal combustion engine
EP1103298A1 (en) * 1999-11-25 2001-05-30 Man Nutzfahrzeuge Ag Process for oxidising NO, CO, hydrocarbons and carbon particles in exhaust gas from supercharged engines

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US3824788A (en) * 1972-04-26 1974-07-23 Gen Motors Corp Internal combustion engine and method of operation for exhaust emission control
EP0806554A1 (en) * 1996-05-10 1997-11-12 Renault Exhaust system for internal combustion engines
US5934070A (en) * 1996-06-28 1999-08-10 Daimler-Benz A.G. Exhaust gas turbocharger and exhaust gas manifold arrangement on an internal combustion engine
EP1103298A1 (en) * 1999-11-25 2001-05-30 Man Nutzfahrzeuge Ag Process for oxidising NO, CO, hydrocarbons and carbon particles in exhaust gas from supercharged engines

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007034099A1 (en) * 2005-09-23 2007-03-29 Renault Sport Technologies Exhaust device for internal combustion engine
FR2891206A1 (en) * 2005-09-23 2007-03-30 Renault Sport Technologies Soc EXHAUST DEVICE FOR INTERNAL COMBUSTION ENGINE
EP2075424A1 (en) * 2007-12-27 2009-07-01 Honda Motor Co., Ltd. Catalyst arrangement construction of motorcycle
US8096114B2 (en) 2007-12-27 2012-01-17 Honda Motor Co., Ltd. Catalyst arrangement construction of motorcycle

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