EP0486338A1 - Einlasskrümmer für Brennkraftmaschine mit Abgasrückführeinrichtung - Google Patents

Einlasskrümmer für Brennkraftmaschine mit Abgasrückführeinrichtung Download PDF

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Publication number
EP0486338A1
EP0486338A1 EP91402791A EP91402791A EP0486338A1 EP 0486338 A1 EP0486338 A1 EP 0486338A1 EP 91402791 A EP91402791 A EP 91402791A EP 91402791 A EP91402791 A EP 91402791A EP 0486338 A1 EP0486338 A1 EP 0486338A1
Authority
EP
European Patent Office
Prior art keywords
intake manifold
wall
air
intake
idle
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.)
Granted
Application number
EP91402791A
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English (en)
French (fr)
Other versions
EP0486338B1 (de
Inventor
Gabriel Laine
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.)
Automobiles Peugeot SA
Automobiles Citroen SA
Original Assignee
Automobiles Peugeot SA
Automobiles Citroen SA
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 Automobiles Peugeot SA, Automobiles Citroen SA filed Critical Automobiles Peugeot SA
Publication of EP0486338A1 publication Critical patent/EP0486338A1/de
Application granted granted Critical
Publication of EP0486338B1 publication Critical patent/EP0486338B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
    • F02M26/17—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories in relation to the intake system
    • F02M26/18—Thermal insulation or heat protection

Definitions

  • the present invention relates to a device for recirculating the exhaust gases of an internal combustion engine.
  • the exhaust gases from the engine 1 are taken from the exhaust manifold 2 by a pipe 3 which recirculates them in the air intake manifold 4 of the engine 1 downstream of a flap of air intake 5 housed at the inlet of the intake manifold 4.
  • a valve 6 for regulating the flow of exhaust gases is provided in the recirculation line 3.
  • the recirculation line 3, made of metal such as l steel, has its end part 3a connected to the intake manifold 4 projecting into this manifold substantially perpendicular to the longitudinal axis thereof.
  • the end part 3a comprises, integral with the latter, for example by welding, a flange 7 for fixing the pipe 3 to the collector 4.
  • the fixing flange 7 is assembled to the collector 4 by fixing screws (not shown ) with a gasket 8 interposed between the flange 7 and the corresponding machined flat part of the manifold 4.
  • the gases from exhaust have a temperature of about 300 to 400 ° C, a temperature which can be easily supported in particular by the surrounding part of this manifold 4 when the latter is made of metal, such as an aluminum alloy.
  • the means of assembly by flange of the recirculation pipe 3 to the intake manifold 4 is no longer usable when the manifold 4 is made of a composite material as is the case in modern modern engines, material not resistant at the above-mentioned high temperatures.
  • the object of the present invention is to eliminate the above drawback by proposing an exhaust gas recirculation device for an internal combustion engine, of the type comprising a gas recirculation pipe from the exhaust manifold to the exhaust manifold. intake and characterized in that the end part of the recirculation line connected to the intake manifold opening into it comprises a double wall defining an annular chamber for thermal insulation of the wall of the intake manifold of the inner wall of the end piece.
  • the end portion opens downstream of the air intake flap into the intake manifold near this flap and the annular chamber is in fluid communication on the one hand with the intake manifold and secondly with an air circuit for adjusting the engine idle speed so that the idle air circulating through the annular chamber cools the wall of the intake manifold contacting the external wall of the tip part.
  • the tip portion projects into the intake manifold and includes openings in its outer wall portion located in the intake manifold.
  • the above-mentioned double wall is formed by folding back on itself the end of the end part of the recirculation pipe.
  • the aforementioned annular chamber is connected to the idle-adjusting air circuit by a tube integral with the external wall of the chamber.
  • connection tube is housed in the wall of the intake manifold along the longitudinal axis of the latter and the idle adjustment circuit comprises, located upstream of the aforementioned air intake flap, a screw for adjusting the air flow circulating in a bypass passage communicating with the connection tube.
  • connection tube opens into the annular chamber portion located outside the intake manifold and the idle adjustment air circuit comprises an external air source connected to the connection tube by an external idle adjustment valve.
  • the recirculation line is metallic and the intake manifold is made of a composite material while the end portion of the recirculation line is inserted into the intake manifold when the latter is poured.
  • the end portion 3a of the metal recirculation line 3 opening through the wall of the intake manifold 4 projecting therein comprises a double wall formed by folding over it- even from the end of the tip part 3a to define a annular chamber 10 closed at its upper part by the folded part secured to the pipe 3 for example by welding.
  • the chamber 10 avoids direct contact between the internal wall 3b of the end part 3a and the wall of the intake manifold 4 contacting the surrounding external wall portion 3c of the end part 3a by surrounding it.
  • the chamber 10 thermally insulates the wall of the collector 4, in a composite material sensitive to relatively high temperatures, from the internal wall 3b of the part 3a brought to the relatively high temperature, about 300 to 400 ° C., from the gases. exhaust flowing in the tip part 3a.
  • the end portion 3a opens downstream of the air intake flap 5 housed in a housing 11 secured to the intake manifold 4, for example by two fixing flanges 12 assembled together by fixing screws (not shown ).
  • the engine idling adjustment circuit comprises an air flow adjustment member constituted by a needle screw 13 upstream of the flap 5 screwed into the housing 11 to let pass a determined flow of air through a longitudinal bypass passage 14 when the flap 5 is closed
  • a tube 15 secured to the external wall 3c perpendicular thereto and opening into the chamber 10 is housed in the wall of the supply manifold 4 along the longitudinal axis thereof and is in fluid communication with the bypass passage 14 disposed substantially coaxially with the tube 15.
  • the assembly formed by the end part 3a and the tube 15 is secured in the wall of the intake manifold 4 when the latter is poured.
  • the annular chamber 10 is in fluid communication with the intake manifold 4 by a number of openings or orifices 16 produced circumferentially through the portion of the external wall 3c projecting from the manifold 4.
  • the idle air enters the chamber 10 to exit through the orifices 16.
  • the intake air strikes the projecting portion of the outer wall 3c to improve the cooling thereof.
  • the tube 15 is connected to the portion of the outer wall 3c located outside of the intake manifold 4 and is fitted into a flexible duct 17 connected to an air source external idling via an air flow control valve 18, known per se.
  • an air flow control valve 18 known per se.
  • the shutter 5 When the shutter 5 is closed, the idle air, coming from the external air source via the valve 18, enters the chamber 10 to exit into the intake manifold 4 through the orifices 16.
  • the flow rate d air being in this case voluntarily more important, the cooling is further improved.
  • the hot exhaust gases arriving in the recirculation line 3 are only in direct contact with the internal wall 3b of the end part 3a and only the external wall 3c, isolated by chamber 10 touches the intake manifold 4.
  • the part of the recirculation line 3 which is in contact with the composite material of the manifold is effectively cooled admission 4.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Exhaust-Gas Circulating Devices (AREA)
EP91402791A 1990-11-14 1991-10-18 Einlasskrümmer für Brennkraftmaschine mit Abgasrückführeinrichtung Expired - Lifetime EP0486338B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9014172 1990-11-14
FR9014172A FR2669078B1 (fr) 1990-11-14 1990-11-14 Dispositif de recirculation des gaz d'echappement d'un moteur a combustion interne.

Publications (2)

Publication Number Publication Date
EP0486338A1 true EP0486338A1 (de) 1992-05-20
EP0486338B1 EP0486338B1 (de) 1994-04-06

Family

ID=9402192

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91402791A Expired - Lifetime EP0486338B1 (de) 1990-11-14 1991-10-18 Einlasskrümmer für Brennkraftmaschine mit Abgasrückführeinrichtung

Country Status (3)

Country Link
EP (1) EP0486338B1 (de)
DE (1) DE69101622T2 (de)
FR (1) FR2669078B1 (de)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2693252A1 (fr) * 1992-07-01 1994-01-07 Orbey Plastiques Ind Dispositif pour adapter un élément chaud sur un corps creux en matière thermoplastique comportant au moins une arrivée de fluide froid, et corps creux comportant un tel dispositif.
EP0636781A1 (de) * 1993-07-27 1995-02-01 Bayerische Motoren Werke Aktiengesellschaft Zumischventil, insbesondere Abgasrückführ-Ventil einer Brennkraftmaschine
EP0647779A1 (de) * 1993-10-08 1995-04-12 Regie Nationale Des Usines Renault S.A. Abgasrückführungsvorrichtung für eine Brennkraftmaschine
FR2719870A1 (fr) * 1994-05-11 1995-11-17 Renault Dispositif de recirculation des gaz d'échappement d'un moteur à combustion interne.
GB2291127A (en) * 1994-07-13 1996-01-17 Bosch Gmbh Robert Exhaust gas recirculation valve mounting
EP0753656A1 (de) * 1995-07-13 1997-01-15 Aisan Kogyo Kabushiki Kaisha Abgasrückführung
WO2001006109A1 (de) * 1999-07-15 2001-01-25 Filterwerk Mann+Hummel Gmbh Fluideinleitung für ein heissles fluid in einer hohlraumstruktur
WO2001023738A1 (de) 1999-09-24 2001-04-05 Filterwerk Mann+Hummel Gmbh Fluideinleitung für ein heisses fluid in einer hohlraumstruktur
FR2844008A1 (fr) * 2002-08-29 2004-03-05 Siemens Vdo Automotive Inc Assemblage de tubes egr a double etancheite
DE202009009441U1 (de) 2009-07-10 2009-10-01 Boa Balg- Und Kompensatoren-Technologie Gmbh Vorrichtung zur Abgasrückführung
FR3001262A1 (fr) * 2013-01-23 2014-07-25 Renault Sa "agencement pour le raccordement d'une conduite de recirculation de gaz d'echappement avec un circuit d'admission de moteur a combustion interne"
FR3104213A1 (fr) * 2019-12-05 2021-06-11 Faurecia Systemes D'echappement Dispositif de refroidissement d’un organe de mesure de débit pour une ligne de recirculation de gaz d’échappement

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19807463A1 (de) * 1998-02-24 1999-08-26 Mannesmann Vdo Ag Ansaugvorrichtung für eine Brennkraftmaschine

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1429528A (fr) * 1964-02-19 1966-02-25 Perfectionnements aux carburateurs
US3892070A (en) * 1970-05-08 1975-07-01 Ranendra K Bose Automobile anti-air pollution device
DE2925495A1 (de) * 1979-06-23 1981-01-22 Bosch Pierburg System Ohg Gemischaufbereiter fuer brennkraftmaschinen
US4450886A (en) * 1980-07-14 1984-05-29 Nakamura Kinzoku Kogyosho, Inc. Method of producing suction manifolds for automobile engines

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62247166A (ja) * 1986-04-18 1987-10-28 Mazda Motor Corp エンジンの排気ガス還流装置

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1429528A (fr) * 1964-02-19 1966-02-25 Perfectionnements aux carburateurs
US3892070A (en) * 1970-05-08 1975-07-01 Ranendra K Bose Automobile anti-air pollution device
DE2925495A1 (de) * 1979-06-23 1981-01-22 Bosch Pierburg System Ohg Gemischaufbereiter fuer brennkraftmaschinen
US4450886A (en) * 1980-07-14 1984-05-29 Nakamura Kinzoku Kogyosho, Inc. Method of producing suction manifolds for automobile engines

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 12, no. 120 (M-685)(2967) 14 Avril 1988 & JP-A-62 247 166 ( MAZDA ) 28 Octobre 1987 *

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2693252A1 (fr) * 1992-07-01 1994-01-07 Orbey Plastiques Ind Dispositif pour adapter un élément chaud sur un corps creux en matière thermoplastique comportant au moins une arrivée de fluide froid, et corps creux comportant un tel dispositif.
WO1994001673A1 (fr) * 1992-07-01 1994-01-20 Orbey Plastiques Et Industries Dispositif pour adapter un element chaud sur un corps creux en matiere thermoplastique comportant au moins une arrivee de fluide froid, et corps creux comportant un tel dispositif
US5542711A (en) * 1992-07-01 1996-08-06 Orbey Plastiques And Industries Device for fitting a hot element to a hollow body made of thermoplastic including at least one cold fluid inlet, and hollow body including such a device
EP0636781A1 (de) * 1993-07-27 1995-02-01 Bayerische Motoren Werke Aktiengesellschaft Zumischventil, insbesondere Abgasrückführ-Ventil einer Brennkraftmaschine
EP0647779A1 (de) * 1993-10-08 1995-04-12 Regie Nationale Des Usines Renault S.A. Abgasrückführungsvorrichtung für eine Brennkraftmaschine
FR2710952A1 (fr) * 1993-10-08 1995-04-14 Renault Dispositif de recirculation des gaz d'échappement d'un moteur à combustion interne.
FR2719870A1 (fr) * 1994-05-11 1995-11-17 Renault Dispositif de recirculation des gaz d'échappement d'un moteur à combustion interne.
GB2291127A (en) * 1994-07-13 1996-01-17 Bosch Gmbh Robert Exhaust gas recirculation valve mounting
FR2722532A1 (fr) * 1994-07-13 1996-01-19 Bosch Gmbh Robert Soupape de recyclage des gaz d'echappement
GB2291127B (en) * 1994-07-13 1996-10-30 Bosch Gmbh Robert Exhaust-gas recirculation valve
EP0753656A1 (de) * 1995-07-13 1997-01-15 Aisan Kogyo Kabushiki Kaisha Abgasrückführung
WO2001006109A1 (de) * 1999-07-15 2001-01-25 Filterwerk Mann+Hummel Gmbh Fluideinleitung für ein heissles fluid in einer hohlraumstruktur
US6513508B2 (en) 1999-07-15 2003-02-04 Filterwerk Mann & Hummel Gmbh Fluid feed duct for a hot fluid in a hollow structure
WO2001023738A1 (de) 1999-09-24 2001-04-05 Filterwerk Mann+Hummel Gmbh Fluideinleitung für ein heisses fluid in einer hohlraumstruktur
FR2844008A1 (fr) * 2002-08-29 2004-03-05 Siemens Vdo Automotive Inc Assemblage de tubes egr a double etancheite
DE202009009441U1 (de) 2009-07-10 2009-10-01 Boa Balg- Und Kompensatoren-Technologie Gmbh Vorrichtung zur Abgasrückführung
DE102010025509A1 (de) 2009-07-10 2011-01-20 Boa Balg- Und Kompensatoren-Technologie Gmbh Vorrichtung zur Abgasrückführung
FR3001262A1 (fr) * 2013-01-23 2014-07-25 Renault Sa "agencement pour le raccordement d'une conduite de recirculation de gaz d'echappement avec un circuit d'admission de moteur a combustion interne"
WO2014114865A1 (fr) * 2013-01-23 2014-07-31 Renault S.A.S Agencement pour le raccordement d'une conduite de recirculation de gaz d'echappement avec un circuit d'admission de moteur a combustion interne
FR3104213A1 (fr) * 2019-12-05 2021-06-11 Faurecia Systemes D'echappement Dispositif de refroidissement d’un organe de mesure de débit pour une ligne de recirculation de gaz d’échappement
US11313329B2 (en) 2019-12-05 2022-04-26 Faurecia Systemes D'echappement Cooling device for a flow sensor in an exhaust gas recirculation line

Also Published As

Publication number Publication date
DE69101622D1 (de) 1994-05-11
EP0486338B1 (de) 1994-04-06
DE69101622T2 (de) 1994-09-29
FR2669078A1 (fr) 1992-05-15
FR2669078B1 (fr) 1994-11-25

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