EP0775817A1 - Recirculation de gaz d'échappement pour moteurs suralimentés à combustion interne - Google Patents

Recirculation de gaz d'échappement pour moteurs suralimentés à combustion interne Download PDF

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Publication number
EP0775817A1
EP0775817A1 EP96116740A EP96116740A EP0775817A1 EP 0775817 A1 EP0775817 A1 EP 0775817A1 EP 96116740 A EP96116740 A EP 96116740A EP 96116740 A EP96116740 A EP 96116740A EP 0775817 A1 EP0775817 A1 EP 0775817A1
Authority
EP
European Patent Office
Prior art keywords
exhaust gas
gas recirculation
valve
exhaust
control device
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
EP96116740A
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German (de)
English (en)
Other versions
EP0775817B1 (fr
Inventor
Dr. Nunzio D'alfonso
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.)
MAN Truck and Bus SE
Original Assignee
MAN Nutzfahrzeuge AG
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 MAN Nutzfahrzeuge AG filed Critical MAN Nutzfahrzeuge AG
Publication of EP0775817A1 publication Critical patent/EP0775817A1/fr
Application granted granted Critical
Publication of EP0775817B1 publication Critical patent/EP0775817B1/fr
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
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D21/00—Controlling engines characterised by their being supplied with non-airborne oxygen or other non-fuel gas
    • F02D21/06—Controlling engines characterised by their being supplied with non-airborne oxygen or other non-fuel gas peculiar to engines having other non-fuel gas added to combustion air
    • F02D21/08—Controlling engines characterised by their being supplied with non-airborne oxygen or other non-fuel gas peculiar to engines having other non-fuel gas added to combustion air the other gas being the exhaust gas of engine
    • 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
    • F02M26/02—EGR systems specially adapted for supercharged engines
    • F02M26/04—EGR systems specially adapted for supercharged engines with a single turbocharger
    • F02M26/05—High pressure loops, i.e. wherein recirculated exhaust gas is taken out from the exhaust system upstream of the turbine and reintroduced into the intake system downstream of the compressor
    • 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
    • F02M26/02—EGR systems specially adapted for supercharged engines
    • F02M26/09—Constructional details, e.g. structural combinations of EGR systems and supercharger systems; Arrangement of the EGR and supercharger systems with respect to the engine
    • F02M26/10—Constructional details, e.g. structural combinations of EGR systems and supercharger systems; Arrangement of the EGR and supercharger systems with respect to the engine having means to increase the pressure difference between the exhaust and intake system, e.g. venturis, variable geometry turbines, check valves using pressure pulsations or throttles in the air intake or exhaust system
    • 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
    • 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
    • F02M26/42—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories having two or more EGR passages; EGR systems specially adapted for engines having two or more cylinders
    • F02M26/43—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories having two or more EGR passages; EGR systems specially adapted for engines having two or more cylinders in which exhaust from only one cylinder or only a group of cylinders is directed to the intake of the engine
    • 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
    • F02M26/52—Systems for actuating EGR valves
    • F02M26/59—Systems for actuating EGR valves using positive pressure actuators; Check valves therefor
    • F02M26/61—Systems for actuating EGR valves using positive pressure actuators; Check valves therefor in response to exhaust pressure
    • F02M26/615—Systems for actuating EGR valves using positive pressure actuators; Check valves therefor in response to exhaust pressure the exhaust back pressure
    • 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
    • F02B29/00—Engines characterised by provision for charging or scavenging not provided for in groups F02B25/00, F02B27/00 or F02B33/00 - F02B39/00; Details thereof
    • F02B29/04—Cooling of air intake supply
    • F02B29/0406—Layout of the intake air cooling or coolant circuit
    • 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
    • F02M26/21—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 with EGR valves located at or near the connection to the intake system
    • 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
    • F02M26/22—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories with coolers in the recirculation passage
    • F02M26/23—Layout, e.g. schematics
    • 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
    • F02M26/40—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories with timing means in the recirculation passage, e.g. cyclically operating valves or regenerators; with arrangements involving pressure pulsations
    • 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
    • F02M26/65—Constructional details of EGR valves
    • F02M26/72—Housings
    • F02M26/73—Housings with means for heating or cooling the EGR valve

Definitions

  • the invention relates to exhaust gas recirculation according to the preamble of patent claim 1.
  • the measure is known to return part of the exhaust gas externally from the exhaust gas system to the intake or charge air system, depending on the load of the internal combustion engine.
  • control devices are provided between the exhaust manifold and the intake or charge air pipe.
  • the removal of the exhaust gas from the exhaust manifold and the supply of the exhaust gas to the compressor are advantageous, since this prevents contamination of the compressor parts.
  • the charge air pressure exceeds the exhaust gas pressure in wide map areas and prevents exhaust gas recirculation. This happens for example. with mechanically charged machines in the entire engine core field and with turbocharged machines in the operating areas where the so-called flushing gradient, i.e. the mean value of the difference between charge air pressure and exhaust gas back pressure in front of the exhaust gas turbine is positive.
  • the object of the invention is to enable sufficient exhaust gas recirculation on the high-pressure side in the entire map of the internal combustion engine with supercharged internal combustion engines, with minimal influence on the gas exchange work in areas where the charge air pressure would otherwise exceed the exhaust gas pressure.
  • throttle and adjustable exhaust valve allows the exhaust gas back pressure in front of the control device to be set in all operating conditions so that the exhaust gas flow to be set flows in the direction of the charge air system if exhaust gas recirculation is desired.
  • the resulting higher exhaust back pressure can be limited to the minimum number of cylinders, which ensure a sufficient exhaust gas recirculation rate, so that the increase in gas exchange work due to the higher back pressure remains limited to a small number of cylinders.
  • Claim 3 represents a development of the control device for optimal exhaust gas recirculation with minimal push-out work.
  • Figure 1 shows a circuit diagram of a pressure-side exhaust gas recirculation of a supercharged internal combustion engine.
  • the example shows a six-cylinder brake engine 1 with a turbocharger 2, consisting of turbine 3 and compressor 4.
  • the charge air can be recooled by a charge air cooler 5 and fed to a charge air pipe 6.
  • parts of the exhaust gas can be returned to the charge air pipe 6 by a control device 7 via an exhaust gas recirculation line 8 and an exhaust gas control valve 9.
  • an exhaust gas cooler 10 can be connected upstream or downstream of the exhaust gas control valve 9.
  • the control device 7 consists of a throttle point 11 and an exhaust valve 12 connected in parallel thereto, which can be controlled by an actuator 13a.
  • the exhaust gas recirculation line 8 branches off from the control device 7 and opens into the pressure-side area of the charge air pipe 6 via the exhaust gas control valve 9.
  • the control device 7 with a throttle point 11 and an exhaust gas control valve 12 and actuator 13a connected in parallel is connected between the exhaust gas manifold 8 and the exhaust gas turbine 3.
  • a flap valve 7a can be arranged in the exhaust gas recirculation line 8. In this way, a certain exhaust gas recirculation is achieved even with the exhaust gas valve 12 fully open in areas of high exhaust gas pressure pulsation.
  • the cylinders 14a and 14b are then connected upstream of the control device 7.
  • the control device 7 can be arranged downstream of the cylinder 14c (FIG. 1) and thus use all three cylinders 14a, 14b, 14c of an exhaust gas flood for the generation of the exhaust gas back pressure and the exhaust gas flow to be recirculated.
  • the flow through the exhaust valve 12 relative to the throttle point 11 can be adjusted by fine adjustment by means of actuator 13a such that a defined exhaust gas pressure is built up in front of the control device 7, which pressure builds up the charge air pressure in the charge air pipe 6 exceeds.
  • the amount of the exhaust gas recirculated via the exhaust line 8 can be adjusted by the position of the exhaust valve 12.
  • the exhaust gas control valve 9 regulates the exhaust gas recirculation rate.
  • FIG. 4 An embodiment of the control device 7 is shown in Figures 4, 5.
  • the control device 7 is flanged to the side of a cylinder head together with the exhaust manifold 15 by means of screws 16a, 16b.
  • the housing 17 combines the exhaust valve 12 and the throttle point 11 and forms a structural unit with the sections 15a, 15b of the exhaust manifold 15.
  • the throttle point 11 connects the sections 15a, 15b of the exhaust manifold 15, so that an overpressure can form in the exhaust gas space 19, which can be regulated by the exhaust gas valve 12 connected in parallel with the throttle point 11.
  • the exhaust valve 12 is controlled by an actuator 13 (Fig. 1). To cool the exhaust valve 12, it is advantageous to provide the valve guide 20 with cooling fins 21.
  • a section V -V is shown in FIG. 5.
  • the housing 17 is flanged to the cylinder head, for example 14a (FIG. 1), by means of the section 15a.
  • the exhaust chamber 19 is connected on the one hand via the throttle point 11 and on the other hand via the exhaust valve 12 to the section 15b of the exhaust manifold 15 (FIG. 4).
  • the exhaust gas to be recirculated passes via the exhaust gas recirculation line 8 flanged to the housing 17 into the air collection tube shown in FIG. 1. 6.
  • the device 7 In the case of engines with single-flow turbocharging (FIG. 1) and in the case of mechanically charged engines, the device 7 is attached directly before the exhaust gas turbine is received or at the outlet of the exhaust manifold.
  • the action of all cylinders n with increased exhaust gas back pressure causes greater losses in the gas exchange phase or less favorable conditions for turbocharging, but offers advantages in the uniform and low-pulsation exhaust gas flow in the return line.

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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)
  • Supercharger (AREA)
EP96116740A 1995-11-21 1996-10-18 Recirculation de gaz d'échappement pour moteurs suralimentés à combustion interne Expired - Lifetime EP0775817B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19543290A DE19543290C2 (de) 1995-11-21 1995-11-21 Abgasrückführung an aufgeladenen Brennkraftmaschinen
DE19543290 1995-11-21

Publications (2)

Publication Number Publication Date
EP0775817A1 true EP0775817A1 (fr) 1997-05-28
EP0775817B1 EP0775817B1 (fr) 1998-11-25

Family

ID=7777964

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96116740A Expired - Lifetime EP0775817B1 (fr) 1995-11-21 1996-10-18 Recirculation de gaz d'échappement pour moteurs suralimentés à combustion interne

Country Status (2)

Country Link
EP (1) EP0775817B1 (fr)
DE (2) DE19543290C2 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000042305A1 (fr) * 1999-01-15 2000-07-20 Borg-Warner Automotive, Inc. Systeme de turbocompresseur et de rge
EP1074707A2 (fr) * 1999-08-04 2001-02-07 Steyr Nutzfahrzeuge Ag Procédé pour recirculer des gaz d'échappement d'un moteur à pistons à plusieurs cylindres et à turbocompresseur

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19744936A1 (de) * 1997-10-10 1999-04-15 Deutz Ag Abgasrückführung bei einer aufgeladenen Brennkraftmaschine
DE19836677C2 (de) * 1998-08-13 2001-04-19 Daimler Chrysler Ag Motorbremseinrichtung für eine Brennkraftmaschine mit einem Abgasturbolader
DE19929449A1 (de) * 1999-06-26 2000-12-28 Man Nutzfahrzeuge Ag Abgasrückführleitung für Brennkraftmaschinen
US20120325187A1 (en) * 2011-06-21 2012-12-27 Caterpillar Inc. Egr flow control for large engines

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3498274A (en) * 1968-04-29 1970-03-03 Garrett Corp Fuel injector for internal combustion engines
US4249382A (en) * 1978-05-22 1981-02-10 Caterpillar Tractor Co. Exhaust gas recirculation system for turbo charged engines
DE3237337A1 (de) * 1981-10-14 1983-04-28 List, Hans, Prof. Dipl.-Ing. Dr.Dr.h.c., 8010 Graz Brennkraftmaschine
US4413593A (en) * 1980-06-27 1983-11-08 Cornell Research Foundation, Inc. Combustion control by prestratification
US4474008A (en) * 1982-04-09 1984-10-02 Toyo Kogyo Co., Ltd. Exhaust gas recirculation system for diesel engine
US4669442A (en) * 1984-06-06 1987-06-02 Toyota Jidosha Kabushiki Kaisha Exhaust gas recirculation apparatus for engine with turbocharger
EP0531277A2 (fr) * 1991-09-02 1993-03-10 AVL Gesellschaft für Verbrennungskraftmaschinen und Messtechnik mbH.Prof.Dr.Dr.h.c. Hans List Moteur à combustion interne comprenant un système d'admission et d'échappement, un turbocompresseur et un accumutateur de pression
JPH0586991A (ja) * 1991-09-26 1993-04-06 Mazda Motor Corp 機械式過給機付エンジンの排気ガス還流装置
JPH0586989A (ja) * 1991-09-26 1993-04-06 Mazda Motor Corp 機械式過給機付エンジンの排気ガス還流装置

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3720942C2 (de) * 1986-07-08 1995-03-16 Volkswagen Ag Regelsystem für eine aufgeladene Brennkraftmaschine
DE4214880C2 (de) * 1991-05-08 1996-03-07 Nissan Motor Regelvorrichtung einer Abgasrückführung
DE4235794C1 (de) * 1992-10-23 1993-10-28 Daimler Benz Ag Abgasrückführung für eine Brennkraftmaschine
DE9421145U1 (de) * 1994-04-28 1995-05-04 Mtu Motoren- Und Turbinen-Union Friedrichshafen Gmbh, 88045 Friedrichshafen Dieselbrennkraftmaschine mit in einer Abgasrückführleitung angeordnetem Wärmetauscher für die Abgaskühlung
DE4429232C1 (de) * 1994-08-18 1995-09-07 Daimler Benz Ag Vorrichtung zur Abgasrückführung für eine aufgeladene Brennkraftmaschine

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3498274A (en) * 1968-04-29 1970-03-03 Garrett Corp Fuel injector for internal combustion engines
US4249382A (en) * 1978-05-22 1981-02-10 Caterpillar Tractor Co. Exhaust gas recirculation system for turbo charged engines
US4413593A (en) * 1980-06-27 1983-11-08 Cornell Research Foundation, Inc. Combustion control by prestratification
DE3237337A1 (de) * 1981-10-14 1983-04-28 List, Hans, Prof. Dipl.-Ing. Dr.Dr.h.c., 8010 Graz Brennkraftmaschine
US4474008A (en) * 1982-04-09 1984-10-02 Toyo Kogyo Co., Ltd. Exhaust gas recirculation system for diesel engine
US4669442A (en) * 1984-06-06 1987-06-02 Toyota Jidosha Kabushiki Kaisha Exhaust gas recirculation apparatus for engine with turbocharger
EP0531277A2 (fr) * 1991-09-02 1993-03-10 AVL Gesellschaft für Verbrennungskraftmaschinen und Messtechnik mbH.Prof.Dr.Dr.h.c. Hans List Moteur à combustion interne comprenant un système d'admission et d'échappement, un turbocompresseur et un accumutateur de pression
JPH0586991A (ja) * 1991-09-26 1993-04-06 Mazda Motor Corp 機械式過給機付エンジンの排気ガス還流装置
JPH0586989A (ja) * 1991-09-26 1993-04-06 Mazda Motor Corp 機械式過給機付エンジンの排気ガス還流装置

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 17, no. 423 (M - 1458) 6 August 1993 (1993-08-06) *

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000042305A1 (fr) * 1999-01-15 2000-07-20 Borg-Warner Automotive, Inc. Systeme de turbocompresseur et de rge
US6263672B1 (en) 1999-01-15 2001-07-24 Borgwarner Inc. Turbocharger and EGR system
EP1612390A2 (fr) * 1999-01-15 2006-01-04 BorgWarner Inc. Système de turbocompresseur et de flux de recyclage des gaz d'échappement
EP1612390A3 (fr) * 1999-01-15 2006-01-18 BorgWarner Inc. Système de turbocompresseur et de flux de recyclage des gaz d'échappement
EP1074707A2 (fr) * 1999-08-04 2001-02-07 Steyr Nutzfahrzeuge Ag Procédé pour recirculer des gaz d'échappement d'un moteur à pistons à plusieurs cylindres et à turbocompresseur
EP1074707A3 (fr) * 1999-08-04 2001-09-26 Steyr Nutzfahrzeuge Ag Procédé pour recirculer des gaz d'échappement d'un moteur à pistons à plusieurs cylindres et à turbocompresseur

Also Published As

Publication number Publication date
DE19543290A1 (de) 1997-05-22
EP0775817B1 (fr) 1998-11-25
DE19543290C2 (de) 1998-07-02
DE59600861D1 (de) 1999-01-07

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