EP1422412A2 - Dispositif de recirculation des gaz d'échappement d'un moteur à combustion interne - Google Patents

Dispositif de recirculation des gaz d'échappement d'un moteur à combustion interne Download PDF

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Publication number
EP1422412A2
EP1422412A2 EP03026730A EP03026730A EP1422412A2 EP 1422412 A2 EP1422412 A2 EP 1422412A2 EP 03026730 A EP03026730 A EP 03026730A EP 03026730 A EP03026730 A EP 03026730A EP 1422412 A2 EP1422412 A2 EP 1422412A2
Authority
EP
European Patent Office
Prior art keywords
egr
catalytic converter
egr gas
recirculation device
exhaust gas
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Withdrawn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
EP03026730A
Other languages
German (de)
English (en)
Other versions
EP1422412A3 (fr
Inventor
Riki Kaechi
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
Nissan Motor Co Ltd
Original Assignee
Renault SAS
Nissan Motor Co Ltd
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, Nissan Motor Co Ltd filed Critical Renault SAS
Publication of EP1422412A2 publication Critical patent/EP1422412A2/fr
Publication of EP1422412A3 publication Critical patent/EP1422412A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/12—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems characterised by means for attaching parts of an EGR system to each other or to engine parts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
    • F02M26/14—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories in relation to the exhaust system
    • F02M26/15—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories in relation to the exhaust system in relation to engine exhaust purifying apparatus

Definitions

  • the present invention relates in general to exhaust gas recirculation (EGR) devices of an internal combustion engine and more particularly to the exhaust gas recirculation devices of a type which is compact in size, simple in construction and thus easy to be mounted on a limited space of an engine room of a motor vehicle.
  • EGR exhaust gas recirculation
  • exhaust gas recirculation devices are designed to circulate part of the exhaust gas into an intake system of the engine for lowering the combustion temperature of an air/fuel mixture in the engine thereby to reduce NOx emissions from the engine.
  • an exhaust gas recirculation device for use with an internal combustion engine which has a catalytic converter in an exhaust system thereof, which comprises an EGR gas inlet port provided in a downstream portion of the catalytic converter; and an EGR gas passage line extending from the EGR gas inlet port to an intake system of the engine, wherein at least a part of the EGR gas passage line is constructed by an EGR gas passage that is integrally formed on and along a side wall of the catalytic converter.
  • an exhaust gas recirculation device for use with an internal combustion engine having an exhaust manifold to which a catalytic converter is directly connected, which comprises an EGR gas inlet port provided in a downstream portion of the catalytic converter; and an EGR gas passage line extending from the EGR gas inlet port to an intake system of the engine, wherein at least a part of the EGR gas passage line is constructed by an EGR gas passage that is integrally formed on and along a side wall of the catalytic converter.
  • an exhaust gas recirculation device for use with an internal combustion engine having an exhaust manifold to which a catalytic converter is connected through a spheric coupler, which comprises an EGR gas inlet port provided in a downstream portion of the catalytic converter; an EGR passage line extending from the EGR gas inlet port to an intake system of the engine, wherein at least a part of the EGR gas passage line is constructed by an EGR gas passage that is integrally formed on and along a side wall of the catalytic converter, and wherein at least a part of the EGR gas passage line is constructed by a passage defined in the spheric coupler.
  • FIG. 1 there is shown an exhaust gas recirculation device 100, which is the first embodiment of the present invention.
  • an internal combustion engine 1 which is of a transversely mounted type.
  • An intake manifold 2 is connected to a front side of engine 1, and a collector unit 3 of intake manifold 2 is positioned above engine 1.
  • an exhaust manifold 4 which has on a united downstream portion of branches thereof a flange 5.
  • a catalytic converter 7 To flange 5, there is connected a catalytic converter 7 through a spheric coupler 6.
  • Catalytic converter 7 has an outlet port (no numeral) from which an exhaust pipe 8 extends.
  • an EGR gas inlet port 9 is formed in a downstream part of catalytic converter 7. As will be described in detail hereinafter, EGR gas inlet port 9 is exposed to an EGR gas passage 10 that extends axially on and along a cylindrical case of catalytic converter 7. EGR gas passage 10 has an outlet from which a first EGR tube 11 extends to an EGR passage provided in spheric coupler 6. From the EGR passage of spheric coupler 6, there extends a second EGR tube 12 to the above-mentioned collector unit 3 through an EGR valve 13.
  • flange 5 connected to the downstream united portion of exhaust manifold 4 is formed with a smaller diameter tubular part 5a about which an annular gasket 14 is tightly disposed via press-fitting.
  • annular gasket 14 forms an essential element of spheric coupler 6 and has an open right end formed with a convex surface 14a.
  • Catalytic converter 7 comprises generally a cylindrical case 17, a catalyst support 15 installed in case 17, a holding mat 16 pressed between cylindrical case 17 and catalyst support 15, a conical inlet defuser 18 connected to an inlet end of case 17 and a conical outlet defuser 19 connected to an outlet end of case 17.
  • a flare flange unit 20 which forms another essential element of the above-mentioned spheric coupler 6 and has an open left part formed with a concave surface 20a which is intimately and slidably mated with convex surface 14a of annular gasket 14. It is now to be noted that due to the slidable mating between convex and concave surfaces 14a and 20a, a relative pivoting between annular gasket 14 and flare flange unit 20 is achieved.
  • a peripheral portion 20b of flare flange unit 20 is formed at its diametrically opposed portions with two bolt holes through which two threaded bolts 21 pass to loosely connect flare flange unit 20 to flange 5. That is, for this connection, each threaded bolt 21 is screwed into a threaded bore formed in flange 5, as shown. About each threaded bolt 21, there is disposed a coil spring 22 which is arranged to pull the peripheral portion 20b of flare flange unit 20 toward flange 5. Due to the work of the coil springs 22, concave surface 20a of flare flange unit 20 is biased against convex surface 14a of annular gasket 14 thereby to achieve an assured sealing therebetween.
  • flare flange unit 20 is caused to pivot relative to annular gasket 14 about an imaginary axis "L" (see Fig. 2) that connects the two bolts 21 while diametrically crossing flare flange unit 20. Due to this pivotal connection, vertical swing movement of exhaust manifold 4 and that of catalytic converter 7, which are inevitably caused by vertical vibration of engine 1, are assuredly and effectively absorbed.
  • cylindrical case 17 is produced by curving a single metal plate. That is, as is understood from this drawing, the metal plate is pressed or curved to have a generally S-shaped cross section with a larger round upper part and a smaller rectangular lower part. Then, longitudinal flanged edges of the shaped metal plate are welded to predetermined portions "W". With these steps, there are defined a cylindrical exhaust gas chamber 17a which has catalyst support 15 (not shown in the drawing) received therein and an axially extending passage which constitutes the above-mentioned EGR gas passage 10. As shown, the EGR gas passage 10 extends in parallel with cylindrical exhaust gas chamber 17a and is isolated from the exhaust gas chamber 17a by a part 17b of case 17.
  • conical outlet defuser 19 is produced by pressing a circular metal plate. Due to this pressing, a part of the metal plate is radially outwardly expanded to produce a radially expanded grooved portion 23 which serves as the above-mentioned EGR gas inlet port 9.
  • EGR gas passage 10 has a downstream open end 10a which is positioned radially outside of conical inlet defuser 18. From the downstream open end 10a, there extends first EGR tube 11 to spheric coupler 6.
  • the catalytic converter 7 when properly mounted in the exhaust system, the catalytic converter 7 is inclined in such a manner that its inlet port is positioned higher than its outlet port with respect to a road surface on which the associated motor vehicle stands. Due to this inclination of catalytic converter 7, EGR gas passage 10 inclines also, and thus, stagnation of condensed water in the passage 10 is prevented.
  • spheric coupler 6 comprises generally two parts which are, as is seen from Fig. 5, the annular gasket 14 and the flare flange unit 20 which are connected to each other through a so-called spherical-bearing connection.
  • annular gasket 14 is formed with convex surface 14a and flare flange unit 20 is formed with concave surface 20a. These convex and concave surfaces 14a and 20a are mated to intimately contact to each other. If desired, to the contrary, the convex surface may be provided by flare flange unit 20 and the concave surface may be provided by annular gasket 14.
  • annular gasket 14 is formed with two EGR passages 24 at diametrically opposed portions. Also flare flange unit 20 is formed with two EGR openings 25 at diametrically opposed portions.
  • these EGR passages 24 and openings 25 are mated with one another at the mutually contacting convex and concave surfaces 14a and 20a.
  • the two EGR openings 25 are exposed to a concave enclosed space 26 which is defined between an inner concave member 27a and an outer concave member 27b.
  • outer member 27b is welded at its peripheral edge "W" to inner member 27a to constitute the flare flange unit 20.
  • each of EGR openings 25 of flare flange unit 20 is so sized and shaped as to cover the entire area of the open end of the corresponding EGR passage 24 of annular gasket 14 even when flare flange unit 20 assumes a maximum angular position relative to annular gasket 14.
  • each open end of the EGR passages 24 and each EGR opening 25 are shaped elliptical.
  • flare flange unit 20 is permitted to pivot about the imaginary axis "L” (see Fig. 2) and thus can assume the maximum angular position that is denoted by reference " ⁇ " in Fig. 7B.
  • EGR passages 24 of annular gasket 14 are positioned on the imaginary axis "L” and EGR openings 25 of flare flange unit 20 are also positioned on the imaginary axis "L”. Due to this arrangement, relative displacement between the open ends of EGR passages 24 and their corresponding EGR openings 25 can be minimized, which can reduce the size of the open ends of EGR passages 24 and EGR openings 25.
  • concave enclosed space 26 of flare flange unit 20 is communicated with two EGR passages 24 of annular gasket 14 (see Fig. 2) as well as first EGR tube 11 (see Fig. 3) through an inlet opening 28 formed in outer concave member 27b of flare flange unit 20.
  • inlet opening 28 is positioned at the lowermost portion of the outer concave member 27b with respect to a road surface on which the associated motor vehicle stands.
  • the flange 5 provided on the united downstream portion of exhaust manifold 4 is formed with two EGR passages 29 which are connected with the passages 24 of annular gasket 14 respectively.
  • the EGR passages 29 are united and then connected to second EGR tube 12 for connecting with EGR valve 13 (see Fig. 1).
  • EGR gas inlet port 9 EGR gas passage 10
  • first EGR tube 11 concave enclosed space 26
  • two EGR openings 25 two EGR passages 24,
  • two EGR passages 29 and second EGR tube 12 constitute a so-called "EGR gas passage line” that conveys a cleaned exhaust gas to the collector unit 3 through EGR valve 13.
  • a part of the cleaned exhaust gas, that has passed through catalyst support 15 of catalytic converter 7, is led into EGR gas passage 10 from EGR gas inlet port 9 defined by conical outlet defuser 19.
  • the cleaned exhaust gas is then led into first EGR tube 11, concave enclosed space 26 of flare flange unit 20, and then as is seen from Fig. 2, into EGR passages 24 of annular gasket 14 and into EGR passages 29 of the flange 5 and then, as is seen from Fig. 1, into second EGR tube 12 and finally led to the collector unit 3 through EGR valve 13. Due to the EGR gas recirculation as mentioned hereinabove, NOx emissions from the engine 1 can be reduced.
  • an upstream part of the EGR gas passage line that is the part constructed by EGR gas inlet port 9 and EGR gas passage 10, is neatly, compactly and integrally provided by case 17 of catalytic converter 7.
  • the exhaust gas recirculation device 100 can be simplified in construction and reduced in size. As is known, the exhaust gas recirculation device 100 having such features is easily mounted in an engine room even when the engine room has a limited space.
  • EGR gas inlet port 9 is provided by pressing a part of conical outlet defuser 19 (see Fig. 4B) and EGR gas passage 10 is provided by curving or pressing a single metal plate to have a generally S-shaped cross section (see Fig. 4A).
  • the upstream part of the EGR gas passage line can be provided at a lower cost.
  • EGR gas inlet port 9 is positioned and constructed to receive a cleaned exhaust gas that has passed through catalytic converter 7, the interior of the EGR gas passage line is entirely protected from collecting unwanted deposits.
  • catalytic converter 7 upon mounting on a motor vehicle, catalytic converter 7 is postured to incline with its inlet port positioned higher than its outlet port with respect to the road surface. Due to this inclination of catalytic converter 7, EGR gas passage 10 inclines also, and thus, stagnation of condensed water in the passage 10 is prevented. Thus, the passage 10 is protected from having rust.
  • each of EGR openings 25 of flare flange unit 20 is so sized and shaped as to cover the entire area of the open end of the corresponding EGR passage 24 of annular gasket 14 even when flare flange unit 20 is largely angled relative to annular gasket 14.
  • EGR gas flow in the EGR gas passage line is smoothly and assuredly carried out even if a large relative angle is kept between flare flange unit 20 and annular gasket 14.
  • flare flange unit 20 Due to provision of two bolts 21 (see Fig. 2) that loosely connect flare flange unit 20 to the flange 5 of the exhaust manifold 4, flare flange unit 20 is caused to pivot relative to annular gasket 14 about the imaginary axis "L". Accordingly, relative displacement between the open ends of EGR passages 24 of annular gasket 14 and their corresponding EGR openings 25 of flare flange unit 20 can be minimized, which can reduce the size of the open ends of EGR passages and EGR openings 25.
  • two EGR passages 24 of annular gasket 14 and two EGR openings 25 of flare flange unit 20 are provided at diametrically opposed positions of spheric coupler 6, not only a mechanically balanced construction of spheric coupler 6 but also a hydro-mechanically balanced flow of EGR gas is achieved in the EGR gas passage line.
  • the welded portions "W" of flare flange unit 20 are kept away from the mutually contacting convex and concave surfaces 14a and 20a of spheric coupler 6.
  • the heat generated during the welding has substantially no influence on such surfaces 14a and 20a, and thus, a sealing ability possessed by the surfaces 14a and 20a is kept unchanged.
  • the welded portions "W" are exposed to the open area, the welding at such portions "W” is easily carried out.
  • the opening 28 of outer concave member 27b of flare flange unit 20 is positioned at the lowermost portion of the member 27b. Accordingly, condensed water inevitably produced in concave enclosed space 26 of flare flange unit 20 is smoothly drained therefrom, and thus, flare flange unit 20 is suppressed from having rust.
  • FIG. 8 there is shown an exhaust gas recirculation device 200, which is the second embodiment of the present invention.
  • the catalytic converter 7 is directly and integrally connected to the united downstream portion of branches of the exhaust manifold 4, as shown.
  • An EGR tube 31 extends from a downstream end of EGR gas passage 10 toward EGR valve 13.
  • the upstream part of the EGR gas passage line is constructed by EGR gas inlet port 9 and EGR gas passage 10 which are integrally provided by case 17 of catalytic converter 7, like in the above-mentioned first embodiment 100.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Exhaust-Gas Circulating Devices (AREA)
  • Exhaust Gas After Treatment (AREA)
  • Exhaust Silencers (AREA)
EP03026730A 2002-11-25 2003-11-21 Dispositif de recirculation des gaz d'échappement d'un moteur à combustion interne Withdrawn EP1422412A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2002340647 2002-11-25
JP2002340647A JP2004176554A (ja) 2002-11-25 2002-11-25 エンジンのｅｇｒ装置

Publications (2)

Publication Number Publication Date
EP1422412A2 true EP1422412A2 (fr) 2004-05-26
EP1422412A3 EP1422412A3 (fr) 2006-08-09

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP03026730A Withdrawn EP1422412A3 (fr) 2002-11-25 2003-11-21 Dispositif de recirculation des gaz d'échappement d'un moteur à combustion interne

Country Status (4)

Country Link
EP (1) EP1422412A3 (fr)
JP (1) JP2004176554A (fr)
KR (1) KR20040045366A (fr)
CN (2) CN1298970C (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2898639A3 (fr) * 2006-03-16 2007-09-21 Renault Sas Procede et circuit de recirculation de gaz d'echappement
FR2908472A1 (fr) * 2006-11-14 2008-05-16 Faurecia Sys Echappement Procede pour alimenter en gaz d'echappement un moteur, element d'echappement, ligne d'echappement et vehicule comportant des moyens pour alimenter un tel moteur en gaz d'echappement
FR2908831A1 (fr) * 2006-11-22 2008-05-23 Renault Sas Agencement pour le montage d'une conduite de derivation de gaz d'echappement qui comporte un troncon d'extremite amont porte par un dispositif de depollution
FR2910068A1 (fr) * 2006-12-13 2008-06-20 Renault Sas Dispositif de recirculation des gaz d'echappement d'un moteur a combustion interne de vehicule automobile
FR2923535A1 (fr) * 2007-11-13 2009-05-15 Renault Sas Systeme d'echappement pour un moteur avec recirculation des gaz d'echappement et vehicule automobile comportant un tel systeme.
US20160333828A1 (en) * 2013-12-13 2016-11-17 Futaba Industrial Co., Ltd. Catalytic converter
US10746080B2 (en) 2016-07-27 2020-08-18 Mazda Motor Corporation Exhaust system device for vehicle
FR3094415A1 (fr) * 2019-03-29 2020-10-02 Faurecia Systemes D'echappement Boîtier de piquage pour recirculation de gaz d’échappement

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004176554A (ja) * 2002-11-25 2004-06-24 Nissan Motor Co Ltd エンジンのｅｇｒ装置
JP5223654B2 (ja) * 2008-12-19 2013-06-26 マツダ株式会社 エンジンの排気装置
JP5791458B2 (ja) * 2011-10-12 2015-10-07 本田技研工業株式会社 内燃機関の排気還流装置
JP6155021B2 (ja) * 2012-12-25 2017-06-28 ダイハツ工業株式会社 内燃機関
JP6296789B2 (ja) * 2013-12-26 2018-03-20 ダイハツ工業株式会社 内燃機関
JP6376519B2 (ja) * 2016-07-27 2018-08-22 マツダ株式会社 車両の排気系装置
JP6436217B2 (ja) * 2017-03-10 2018-12-12 マツダ株式会社 エンジンの排気装置
CN108571404B (zh) 2017-03-10 2021-03-09 马自达汽车株式会社 发动机的排气装置

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Publication number Priority date Publication date Assignee Title
EP0844373A1 (fr) * 1996-11-20 1998-05-27 Honda Giken Kogyo Kabushiki Kaisha Système de purification du gaz d'échappement d'un moteur à combustion interne
US20010008616A1 (en) * 2000-01-19 2001-07-19 Honda Giken Kogyo Kabushiki Kaisha Exhaust gas purification system of internal combustion engine
EP1331388A2 (fr) * 2002-01-28 2003-07-30 Mitsubishi Jidosha Kogyo Kabushiki Kaisha Dispositif de recirculation de gaz d'échappement pour moteurs à combustion interne

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US5657736A (en) * 1994-12-30 1997-08-19 Honda Giken Kogyo Kabushiki Kaisha Fuel metering control system for internal combustion engine
JPH08291772A (ja) * 1995-04-20 1996-11-05 Mazda Motor Corp エンジンのｅｇｒガス取出構造
JP2002285916A (ja) * 2001-03-27 2002-10-03 Mitsubishi Motors Corp 排気再循環装置
JP2004176554A (ja) * 2002-11-25 2004-06-24 Nissan Motor Co Ltd エンジンのｅｇｒ装置

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0844373A1 (fr) * 1996-11-20 1998-05-27 Honda Giken Kogyo Kabushiki Kaisha Système de purification du gaz d'échappement d'un moteur à combustion interne
US20010008616A1 (en) * 2000-01-19 2001-07-19 Honda Giken Kogyo Kabushiki Kaisha Exhaust gas purification system of internal combustion engine
EP1331388A2 (fr) * 2002-01-28 2003-07-30 Mitsubishi Jidosha Kogyo Kabushiki Kaisha Dispositif de recirculation de gaz d'échappement pour moteurs à combustion interne

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PATENT ABSTRACTS OF JAPAN vol. 1997, no. 03, 31 March 1997 (1997-03-31) -& JP 08 291772 A (MAZDA MOTOR CORP), 5 November 1996 (1996-11-05) *

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2898639A3 (fr) * 2006-03-16 2007-09-21 Renault Sas Procede et circuit de recirculation de gaz d'echappement
KR101419447B1 (ko) * 2006-11-14 2014-07-14 포레시아 씨스뗌 데샤쁘망 배기가스로 연소엔진에 동력을 공급하는 방법, 배기요소, 배기라인 및 상기 배기가스로 연소엔진에 동력을 공급하는 수단을 포함하는 자동차
FR2908472A1 (fr) * 2006-11-14 2008-05-16 Faurecia Sys Echappement Procede pour alimenter en gaz d'echappement un moteur, element d'echappement, ligne d'echappement et vehicule comportant des moyens pour alimenter un tel moteur en gaz d'echappement
WO2008059172A2 (fr) * 2006-11-14 2008-05-22 Faurecia Systemes d'Echappement, Société Par Actions Simplifiée Procede pour alimenter en gaz d'echappement un moteur, element d'echappement, ligne d'echappement et vehicule comportant des moyens pour alimenter un tel moteur en gaz d'echappement
WO2008059172A3 (fr) * 2006-11-14 2008-07-03 Faurecia Sys Echappement Procede pour alimenter en gaz d'echappement un moteur, element d'echappement, ligne d'echappement et vehicule comportant des moyens pour alimenter un tel moteur en gaz d'echappement
DE112007002746B4 (de) * 2006-11-14 2012-01-12 Faurecia Systèmes d'echappement, Société par actions simplifiee Verfahren zum Versorgen eines Motors mit Auspuffgas, Auspuffelement, Auspuffanlage und Fahrzeug umfassend Mittel zum Versorgen eines solchen Motors mit Auspuffgas
FR2908831A1 (fr) * 2006-11-22 2008-05-23 Renault Sas Agencement pour le montage d'une conduite de derivation de gaz d'echappement qui comporte un troncon d'extremite amont porte par un dispositif de depollution
WO2008062120A1 (fr) * 2006-11-22 2008-05-29 Renault S.A.S Agencement pour le montage d'une conduite de derivation de gaz d'echappement qui comporte un troncon d'extremite amont porte par un dispositif de depollution
FR2910068A1 (fr) * 2006-12-13 2008-06-20 Renault Sas Dispositif de recirculation des gaz d'echappement d'un moteur a combustion interne de vehicule automobile
EP1936176A1 (fr) 2006-12-13 2008-06-25 Renault S.A.S. Dispositif de recirculation des gaz d'échappement d'un moteur à combustion interne de véhicule automobile
FR2923535A1 (fr) * 2007-11-13 2009-05-15 Renault Sas Systeme d'echappement pour un moteur avec recirculation des gaz d'echappement et vehicule automobile comportant un tel systeme.
US20160333828A1 (en) * 2013-12-13 2016-11-17 Futaba Industrial Co., Ltd. Catalytic converter
US10273909B2 (en) * 2013-12-13 2019-04-30 Futaba Industrial Co., Ltd. Catalytic converter
US10746080B2 (en) 2016-07-27 2020-08-18 Mazda Motor Corporation Exhaust system device for vehicle
US10995649B2 (en) * 2016-07-27 2021-05-04 Mazda Motor Corporation Vehicle engine
FR3094415A1 (fr) * 2019-03-29 2020-10-02 Faurecia Systemes D'echappement Boîtier de piquage pour recirculation de gaz d’échappement

Also Published As

Publication number Publication date
CN1502801A (zh) 2004-06-09
JP2004176554A (ja) 2004-06-24
EP1422412A3 (fr) 2006-08-09
KR20040045366A (ko) 2004-06-01
CN2723706Y (zh) 2005-09-07
CN1298970C (zh) 2007-02-07

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