EP0349729A1 - Exhaust gas recirculation device - Google Patents

Exhaust gas recirculation device Download PDF

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Publication number
EP0349729A1
EP0349729A1 EP89108300A EP89108300A EP0349729A1 EP 0349729 A1 EP0349729 A1 EP 0349729A1 EP 89108300 A EP89108300 A EP 89108300A EP 89108300 A EP89108300 A EP 89108300A EP 0349729 A1 EP0349729 A1 EP 0349729A1
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EP
European Patent Office
Prior art keywords
exhaust gas
gas recirculation
air intake
intake duct
pneumatic actuator
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Withdrawn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
EP89108300A
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German (de)
French (fr)
Inventor
Osman Sari
Michael Krämer
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.)
Pierburg GmbH
Original Assignee
Pierburg GmbH
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 Pierburg GmbH filed Critical Pierburg GmbH
Publication of EP0349729A1 publication Critical patent/EP0349729A1/en
Withdrawn legal-status Critical Current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
    • F02M26/51—EGR valves combined with other devices, e.g. with intake valves or compressors
    • 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
    • F02M26/52—Systems for actuating EGR valves
    • F02M26/64—Systems for actuating EGR valves the EGR valve being operated together with an intake air throttle
    • 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
    • F02M26/66—Lift valves, e.g. poppet valves
    • F02M26/67—Pintles; Spindles; Springs; Bearings; Sealings; Connections to actuators
    • 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
    • F02B3/00—Engines characterised by air compression and subsequent fuel addition
    • F02B3/06—Engines characterised by air compression and subsequent fuel addition with compression ignition
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D9/00—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits
    • F02D9/02—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits concerning induction conduits
    • F02D2009/0201—Arrangements; Control features; Details thereof
    • F02D2009/0276—Throttle and EGR-valve operated together
    • 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
    • F02M26/50—Arrangements or methods for preventing or reducing deposits, corrosion or wear caused by impurities

Definitions

  • the invention relates to an exhaust gas recirculation device in an internal combustion engine for motor vehicles, in particular in a diesel engine.
  • an exhaust gas recirculation valve is disclosed in DE-OS 35 11 638, which has diaphragm heating prevention means.
  • This is, for example, a particularly shaped ring plate arranged in the membrane box or a star-shaped heat dissipation plate which has a plurality of ribs projecting downwards in a radial manner and is fastened to a valve rod below a membrane plate.
  • the object of the invention is therefore to design a generic inexpensive exhaust gas recirculation device in such a way that the disadvantages mentioned above are avoided.
  • the pneumatic actuator of the exhaust gas recirculation device is arranged on the air intake duct of the internal combustion engine in such a way that its diaphragm rod extends through the air intake duct transversely to its direction of flow and a valve member connected to the diaphragm rod controls the flow cross section of the exhaust gas recirculation duct at its confluence with the air intake duct.
  • the valve member which is strongly heated via the exhaust gas stream, is cooled by the intake air stream flowing past, which is cool in relation to the hot exhaust gas stream, and experiences an additional temperature reduction through the membrane rod connected to it and also arranged in the cool intake air stream.
  • Contaminants introduced by the exhaust gas flow such as soot and rust particles, are transported away from the intake air flow without getting between the membrane rod guide and the membrane rod shaft, as a result of which valve pinching is avoided.
  • Another advantage is that cheaper materials can be used due to the exhaust gas recirculation valve temperatures kept relatively low with the invention.
  • the exhaust gas recirculation device enables, in a further embodiment, the coupling of the pneumatic actuator to a known throttle valve for intake air throttling, which is adjusted as a function of the adjustment movement of the valve member or the membrane rod or by a second pneumatic actuator.
  • the adjustment movement of the throttle valve has the opposite effect to the adjustment movement of the valve member.
  • the pneumatic actuator and the throttle valve with control box can be arranged on one component, the intake manifold, with the advantage of a space-saving, inexpensive construction.
  • FIG. 1 An embodiment of the invention is shown in the drawing and is described below.
  • the drawing shows a longitudinal section through a first embodiment of an exhaust gas recirculation device.
  • the drawing shows an embodiment of an exhaust gas recirculation device 1 according to the invention, consisting of an air intake duct designed as an intake port 2, into which an exhaust gas recirculation channel 3 opens, and on which a pneumatic actuator 4 is arranged such that its membrane rod 5 projects through the intake port 2 transversely to the direction of flow and enters with the membrane rod 5 connected valve member 6 controls a mouth 8 formed as a seat 7 of the exhaust gas recirculation channel 3 in the intake manifold 2.
  • a throttle valve 10 mounted on a throttle valve shaft 9 is connected to the diaphragm rod 5 via a lever system 11, so that with increasing opening of the valve member 6 and the associated increase in the amount of exhaust gas by closing the throttle valve 10, the fresh air supply is reduced (process shown in dashed lines in the drawing). .
  • control of the throttle valve 10 can also be carried out by a further pneumatic actuator (not shown in the drawing), as a result of which the ratio of exhaust gas recirculation rate and fresh air can be controlled more finely and independently of one another.

Abstract

Due to very high exhaust gas temperatures, exhaust gas recirculation devices of this kind must be capable of withstanding high thermal stresses. For this reason, known devices employ means to prevent the heating of the diaphragm in the form of specially formed annular plates or heat conducting plates. However, these designs are very expensive and furthermore tend towards valve sticking. The new exhaust gas recirculation device is distinguished by the fact that a pneumatic actuator (4) is arranged on the air intake duct (2) of an internal combustion engine in such a way that its diaphragm rod (5) projects through the air intake duct transversely to the direction of flow in the latter and that a valve member (6) connected to the diaphragm rod controls the cross-section of flow of an exhaust gas recirculation duct (3) at its opening (8) into the air intake duct. Exhaust gas recirculation devices of this kind are employed in automobile construction, in particular on diesel engines. <IMAGE>

Description

Die Erfindung bezieht sich auf eine Abgasrückführeinrichtung bei einer Brennkraftma­schine für Kraftfahrzeuge, insbesondere bei einem Dieselmotor.The invention relates to an exhaust gas recirculation device in an internal combustion engine for motor vehicles, in particular in a diesel engine.

Derartige Abgasrückführeinrichtungen müssen aufgrund sehr hoher Abgastemperaturen thermisch hoch belastbar sein. Aus diesem Grund wird in der DE-OS 35 11 638 ein Ab­gasrückführventil offenbart, das Membranerhitzungsverhinderungsmittel aufweist. Da­bei handelt es sich beispielsweise um ein besonders ausgeformtes in der Membrandose angeordnetes Ringblech oder um ein sternförmig ausgestaltetes, mehrere strahlenför­mig nach unten wegragende Rippen aufweisendes Wärmeableitblech, das an einer Ven­tilstange unterhalb eines Membrantellers befestigt ist.Such exhaust gas recirculation devices must be able to withstand high thermal loads due to very high exhaust gas temperatures. For this reason, an exhaust gas recirculation valve is disclosed in DE-OS 35 11 638, which has diaphragm heating prevention means. This is, for example, a particularly shaped ring plate arranged in the membrane box or a star-shaped heat dissipation plate which has a plurality of ribs projecting downwards in a radial manner and is fastened to a valve rod below a membrane plate.

Diese Ausführungsvarianten mögen zwar in der Lage sein, zu verhindern, daß die Tem­peraturen an der Membrane über die zulässigen Werte von < 175°C ansteigen, verkom­plizieren jedoch durch Vermehrung der Einzelteile die Konstruktion und verteuern die Montage und Lagerhaltung. Außerdem neigen derartige Abgasrückführventile durch Eindringen von Ruß- und Rostpartikeln zwischen Ventilführung und Ventilschaft zum Ventilklemmen.These versions may be able to prevent the temperatures on the membrane from rising above the permissible values of <175 ° C, but complicate the construction by increasing the number of individual parts and make assembly and storage more expensive. In addition, such exhaust gas recirculation valves tend to pinch due to the penetration of soot and rust particles between the valve guide and valve stem.

Aufgabe der Erfindung ist es daher, eine gattungsgemäße kostengünstige Abgasrück­führeinrichtung derart zu gestalten, daß obengenannte Nachteile vermieden werden.The object of the invention is therefore to design a generic inexpensive exhaust gas recirculation device in such a way that the disadvantages mentioned above are avoided.

Diese Aufgabe ist mit den im Kennzeichen des Patentanspruchs 1 genannten Merkma­len gelöst. Vorteilhafte Weiterbildungen sind in den Unteransprüchen genannt.This object is achieved with the features mentioned in the characterizing part of patent claim 1. Advantageous further developments are mentioned in the subclaims.

Erfindungsgemäß ist das pneumatische Stellglied der Abgasrückführeinrichtung derart auf dem Luftansaugkanal der Brennkraftmaschine angeordnet, daß dessen Membran­stange den Luftansaugkanal quer zu dessen Strömungsrichtung durchragt und ein mit der Membranstange verbundenes Ventilglied den Strömungsquerschnitt des Abgasrück­führkanals an dessen Einmündung in den Luftansaugkanal kontrolliert. Dabei wird das über den Abgasstrom stark aufgeheizte Ventilglied von dem vorbeiströmenden im Ver­hältnis zum heißen Abgasstrom kühlen Ansaugluftstrom gekühlt und erfährt eine zu­sätzliche Temperaturabsenkung durch die mit ihm verbundene, ebenfalls im kühlen An­saugluftstrom angeordnete Membranstange.According to the invention, the pneumatic actuator of the exhaust gas recirculation device is arranged on the air intake duct of the internal combustion engine in such a way that its diaphragm rod extends through the air intake duct transversely to its direction of flow and a valve member connected to the diaphragm rod controls the flow cross section of the exhaust gas recirculation duct at its confluence with the air intake duct. The valve member, which is strongly heated via the exhaust gas stream, is cooled by the intake air stream flowing past, which is cool in relation to the hot exhaust gas stream, and experiences an additional temperature reduction through the membrane rod connected to it and also arranged in the cool intake air stream.

Durch den Abgasstrom eingebrachte Verunreinigungen wie zum Beispiel Ruß- und Rost­partikel werden ohne zwischen die Membranstangenführung und den Membranstangen­schaft zu gelangen, von dem Ansaugluftstrom wegtransportiert, wodurch ein Ventil­klemmen vermieden wird.Contaminants introduced by the exhaust gas flow, such as soot and rust particles, are transported away from the intake air flow without getting between the membrane rod guide and the membrane rod shaft, as a result of which valve pinching is avoided.

Ein weiterer Vorteil ist auch, daß durch die mit der Erfindung relativ niedrig gehalte­nen Abgasrückführventiltemperaturen billigere Werkstoffe verwendet werden können.Another advantage is that cheaper materials can be used due to the exhaust gas recirculation valve temperatures kept relatively low with the invention.

Desweiteren ermöglicht die erfindungsgemäße Abgasrückführeinrichtung in einer weite­ren Ausgestaltung die Kopplung des pneumatischen Stellgliedes mit einer bekannten Drosselklappe zur Ansaugluftdrosselung, die in Abhängigkeit der Verstellbewegung des Ventilgliedes bzw. der Membranstange oder von einem zweiten pneumatischen Stell­glied verstellt wird. Dabei ist die Verstellbewegung der Drosselklappe in der Wirkung gegenläufig der Verstellbewegung des Ventilgliedes.
Hierbei kann das pneumatische Stellglied und die Drosselklappe mit Steuerdose an ei­nem Bauteil, dem Ansaugstutzen, angeordnet werden mit dem Vorteil einer raumspa­renden, kostengünstigen Bauweise.Furthermore, the exhaust gas recirculation device according to the invention enables, in a further embodiment, the coupling of the pneumatic actuator to a known throttle valve for intake air throttling, which is adjusted as a function of the adjustment movement of the valve member or the membrane rod or by a second pneumatic actuator. The adjustment movement of the throttle valve has the opposite effect to the adjustment movement of the valve member.
Here, the pneumatic actuator and the throttle valve with control box can be arranged on one component, the intake manifold, with the advantage of a space-saving, inexpensive construction.

Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt und wird nach­folgend beschrieben.
Die Zeichnung zeigt einen Längsschnitt durch ein erstes Ausführungsbeispiel einer Ab­gasrückführeinrichtung.An embodiment of the invention is shown in the drawing and is described below.
The drawing shows a longitudinal section through a first embodiment of an exhaust gas recirculation device.

Die Zeichnung zeigt ein Ausführungsbeispiel einer erfindungsgemäßen Abgasrückführ­einrichtung 1, bestehend aus einem als Ansaugstutzen 2 ausgebildeten Luftansaugkanal, in den ein Abgasrückführkanal 3 einmündet, und auf dem ein pneumatisches Stellglied 4 derart angeordnet ist, daß dessen Membranstange 5 den Ansaugstutzen 2 quer zur Strömungsrichtung durchragt und ein mit der Membranstange 5 verbundenes Ventilglied 6 eine als Sitz 7 ausgebildete Einmündung 8 des Abgasrückführkanals 3 in den Ansaug­stutzen 2 kontrolliert.The drawing shows an embodiment of an exhaust gas recirculation device 1 according to the invention, consisting of an air intake duct designed as an intake port 2, into which an exhaust gas recirculation channel 3 opens, and on which a pneumatic actuator 4 is arranged such that its membrane rod 5 projects through the intake port 2 transversely to the direction of flow and enters with the membrane rod 5 connected valve member 6 controls a mouth 8 formed as a seat 7 of the exhaust gas recirculation channel 3 in the intake manifold 2.

Eine auf einer Drosselklappenwelle 9 gelagerte Drosselklappe 10 ist über ein Hebelsy­stem 11 mit der Membranstange 5 verbunden, so daß mit zunehmender Öffnung des Ventilgliedes 6 und damit verbundener Zunahme der Abgasmenge durch Schließen der Drosselklappe 10 die Frischluftzufuhr verringert wird (Vorgang in der Zeichnung gestri­chelt dargestellt).A throttle valve 10 mounted on a throttle valve shaft 9 is connected to the diaphragm rod 5 via a lever system 11, so that with increasing opening of the valve member 6 and the associated increase in the amount of exhaust gas by closing the throttle valve 10, the fresh air supply is reduced (process shown in dashed lines in the drawing). .

In einer vorteilhaften Weiterbildung kann die Steuerung der Drosselklappe 10 auch von einem weiteren pneumatischen Stellglied (in der Zeichnung nicht dargestellt) übernom­men werden, wodurch das Verhältnis von Abgasrückführrate und Frischluft feiner und unabhängig voneinander gesteuert werden kann.In an advantageous development, the control of the throttle valve 10 can also be carried out by a further pneumatic actuator (not shown in the drawing), as a result of which the ratio of exhaust gas recirculation rate and fresh air can be controlled more finely and independently of one another.

Claims (2)

1. Abgasrückführeinrichtung, gebildet aus einem in einen Luftansaugkanal einer Brenn­kraftmaschine einmündenden Abgasrückführkanal, dessen Strömungsquerschnitt von einem pneumatischen Stellglied kontrolliert wird, dadurch gekennzeichnet, daß das pneumatische Stellglied (4) derart auf dem Luftansaugkanal (2) angeordnet ist, daß dessen Membranstange (5) den Luftansaugkanal (2) quer zur Strömungsrichtung durchragt und ein mit dieser verbundenes Ventilglied (6) den Strömungsquerschnitt des Abgasrückführkanals (3) an dessen Einmündung (8) in das Luftansaugrohr (2) kon­trolliert.1. Exhaust gas recirculation device, formed from an exhaust gas recirculation channel opening into an air intake duct of an internal combustion engine, the flow cross section of which is controlled by a pneumatic actuator, characterized in that the pneumatic actuator (4) is arranged on the air intake duct (2) in such a way that its membrane rod (5) extends through the air intake duct (2) transversely to the direction of flow and a valve member (6) connected to it controls the flow cross section of the exhaust gas recirculation duct (3) at its junction (8) into the air intake pipe (2). 2. Abgasrückführeinrichtung nach Anspruch 1, dadurch gekennzeichnet, daß stromauf der Einmündung (8) des Abgasrückführkanals (3) eine bekannte Drosselklappe (10) angeordnet ist, die in Abhängigkeit der Verstellbewegung des Ventilgliedes (6) bzw. der Membranstange (5) oder von einem zweiten pneumatischen Stellglied verstellt wird, wobei die Verstellbewegung in der Wirkung gegenläufig der Ventilverstellbewe­gung erfolgt.2. Exhaust gas recirculation device according to claim 1, characterized in that a known throttle valve (10) is arranged upstream of the mouth (8) of the exhaust gas recirculation channel (10), which depending on the adjustment movement of the valve member (6) or the membrane rod (5) or a second pneumatic actuator is adjusted, the adjustment movement having the opposite effect to the valve adjustment movement.
EP89108300A 1988-07-07 1989-05-09 Exhaust gas recirculation device Withdrawn EP0349729A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3822954 1988-07-07
DE3822954A DE3822954C2 (en) 1988-07-07 1988-07-07 Exhaust gas recirculation device

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EP0349729A1 true EP0349729A1 (en) 1990-01-10

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Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0636781A1 (en) * 1993-07-27 1995-02-01 Bayerische Motoren Werke Aktiengesellschaft Mixing valve, especially an exhaust gas recirculation valve for an internal combustion engine
GB2291127A (en) * 1994-07-13 1996-01-17 Bosch Gmbh Robert Exhaust gas recirculation valve mounting
EP0753656A1 (en) * 1995-07-13 1997-01-15 Aisan Kogyo Kabushiki Kaisha Exhaust gas recirculation
EP0780565A2 (en) 1995-12-21 1997-06-25 Denso Corporation EGR system using a control valve arranged perpendicularly to the axis of an air intake passage
WO1997024522A1 (en) * 1995-12-29 1997-07-10 Robert Bosch Gmbh Device for exhaust gas recirculation with a closure member which can be actuated in the intake duct
EP0900930A2 (en) * 1997-09-04 1999-03-10 General Motors Corporation Exhaust gas recirculation valve
FR2806448A1 (en) * 2000-03-16 2001-09-21 Coutier Moulage Gen Ind Control system for the gas debit in an exhaust gas recirculation system has the EGR valve and the air admission valve inside the same casing, controlled by a single control unit at a servomechanism
EP1136688A3 (en) * 2000-03-22 2002-06-12 Delphi Technologies, Inc. Exhaust gas re-circulation device for an internal combustion engine
DE4338194C2 (en) * 1993-11-09 2003-04-03 Pierburg Gmbh Air intake duct system for internal combustion engines
EP1369559A3 (en) * 2002-06-06 2006-04-05 Pierburg GmbH Valve device
FR2921434A1 (en) * 2007-09-26 2009-03-27 Renault Sas DEVICE FOR FILTERING THE RECIRCULATION GASES OF A COMBUSTION ENGINE
EP2317109A1 (en) * 2009-11-03 2011-05-04 Cooper-Standard Automotive (Deutschland) GmbH Exhaust gas return system and method for operating the same
CN103912414A (en) * 2014-04-16 2014-07-09 无锡隆盛科技股份有限公司 Central rod connecting structure of electric EGR (exhaust gas recycling) valve
FR3007071A1 (en) * 2013-06-17 2014-12-19 Peugeot Citroen Automobiles Sa THERMAL MOTOR WITH COMMON ACTUATOR FOR EGR VALVE AND AIR VALVE

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1751655B1 (en) * 1968-07-04 1971-11-18 Motoren Werke Mannheim Ag Valve for the admixture of exhaust gas to the intake air of internal combustion engines
DE2212007A1 (en) * 1972-03-13 1973-09-20 Bosch Gmbh Robert VALVE FOR EXHAUST GAS RECIRCULATION IN COMBUSTION MACHINES
GB1335487A (en) * 1971-11-22 1973-10-31 Chrysler Corp Internal combustion engine exhaust gas recirculation
FR2277984A1 (en) * 1974-07-10 1976-02-06 Hoechst Ag METHOD AND DEVICE FOR THE PREPARATION OF FLAMMABLE MIXTURES FOR INTERNAL COMBUSTION ENGINES FROM FUELS OF DIFFERENT CALORIFIC POWERS
US3961610A (en) * 1974-10-29 1976-06-08 General Motors Corporation Exhaust gas recirculation control system
DE2855027A1 (en) * 1976-12-22 1980-07-10 Bosch Gmbh Robert DEVICE FOR ACTUATING AN ACTUATING ELEMENT IN A COMBUSTION ENGINE ON AN EXHAUST GAS RECIRCULATION CONTROL DEVICE
DE2908386A1 (en) * 1979-03-03 1980-09-11 Bosch Gmbh Robert DEVICE FOR REGULATING THE QUANTITY OF AIR / FUEL IN INTERNAL COMBUSTION ENGINES
JPS60243359A (en) * 1984-05-16 1985-12-03 Nippon Denso Co Ltd Exhaust gas recirculation device

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3511638C3 (en) * 1985-03-29 1996-06-20 Daimler Benz Ag Exhaust gas recirculation valve

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1751655B1 (en) * 1968-07-04 1971-11-18 Motoren Werke Mannheim Ag Valve for the admixture of exhaust gas to the intake air of internal combustion engines
GB1335487A (en) * 1971-11-22 1973-10-31 Chrysler Corp Internal combustion engine exhaust gas recirculation
DE2212007A1 (en) * 1972-03-13 1973-09-20 Bosch Gmbh Robert VALVE FOR EXHAUST GAS RECIRCULATION IN COMBUSTION MACHINES
FR2277984A1 (en) * 1974-07-10 1976-02-06 Hoechst Ag METHOD AND DEVICE FOR THE PREPARATION OF FLAMMABLE MIXTURES FOR INTERNAL COMBUSTION ENGINES FROM FUELS OF DIFFERENT CALORIFIC POWERS
US3961610A (en) * 1974-10-29 1976-06-08 General Motors Corporation Exhaust gas recirculation control system
DE2855027A1 (en) * 1976-12-22 1980-07-10 Bosch Gmbh Robert DEVICE FOR ACTUATING AN ACTUATING ELEMENT IN A COMBUSTION ENGINE ON AN EXHAUST GAS RECIRCULATION CONTROL DEVICE
DE2908386A1 (en) * 1979-03-03 1980-09-11 Bosch Gmbh Robert DEVICE FOR REGULATING THE QUANTITY OF AIR / FUEL IN INTERNAL COMBUSTION ENGINES
JPS60243359A (en) * 1984-05-16 1985-12-03 Nippon Denso Co Ltd Exhaust gas recirculation device

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 10, no. 114 (M-473)(2171) 26 April 1986, & JP-A-60 243359 (NIPPON DENSO) 03 Dezember 1985, *

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0636781A1 (en) * 1993-07-27 1995-02-01 Bayerische Motoren Werke Aktiengesellschaft Mixing valve, especially an exhaust gas recirculation valve for an internal combustion engine
DE4338194C2 (en) * 1993-11-09 2003-04-03 Pierburg Gmbh Air intake duct system for internal combustion engines
GB2291127A (en) * 1994-07-13 1996-01-17 Bosch Gmbh Robert Exhaust gas recirculation valve mounting
GB2291127B (en) * 1994-07-13 1996-10-30 Bosch Gmbh Robert Exhaust-gas recirculation valve
EP0753656A1 (en) * 1995-07-13 1997-01-15 Aisan Kogyo Kabushiki Kaisha Exhaust gas recirculation
EP0780565A2 (en) 1995-12-21 1997-06-25 Denso Corporation EGR system using a control valve arranged perpendicularly to the axis of an air intake passage
EP0780565A3 (en) * 1995-12-21 1998-02-25 Denso Corporation EGR system using a control valve arranged perpendicularly to the axis of an air intake passage
US5746190A (en) * 1995-12-21 1998-05-05 Denso Corporation EGR system using perpendicularly arranged control valve
WO1997024522A1 (en) * 1995-12-29 1997-07-10 Robert Bosch Gmbh Device for exhaust gas recirculation with a closure member which can be actuated in the intake duct
US5785034A (en) * 1995-12-29 1998-07-28 Robert Bosch Gmbh Exhaust gas recirculation apparatus with a closing element actuatable in the intake conduit
EP0900930A3 (en) * 1997-09-04 1999-12-22 General Motors Corporation Exhaust gas recirculation valve
US6039034A (en) * 1997-09-04 2000-03-21 General Motors Corporation Exhaust gas recirculation valve
EP0900930A2 (en) * 1997-09-04 1999-03-10 General Motors Corporation Exhaust gas recirculation valve
FR2806448A1 (en) * 2000-03-16 2001-09-21 Coutier Moulage Gen Ind Control system for the gas debit in an exhaust gas recirculation system has the EGR valve and the air admission valve inside the same casing, controlled by a single control unit at a servomechanism
EP1136688A3 (en) * 2000-03-22 2002-06-12 Delphi Technologies, Inc. Exhaust gas re-circulation device for an internal combustion engine
EP1369559A3 (en) * 2002-06-06 2006-04-05 Pierburg GmbH Valve device
FR2921434A1 (en) * 2007-09-26 2009-03-27 Renault Sas DEVICE FOR FILTERING THE RECIRCULATION GASES OF A COMBUSTION ENGINE
EP2042723A1 (en) * 2007-09-26 2009-04-01 Renault Device for filtering the recirculation gases of a combustion engine
EP2317109A1 (en) * 2009-11-03 2011-05-04 Cooper-Standard Automotive (Deutschland) GmbH Exhaust gas return system and method for operating the same
FR3007071A1 (en) * 2013-06-17 2014-12-19 Peugeot Citroen Automobiles Sa THERMAL MOTOR WITH COMMON ACTUATOR FOR EGR VALVE AND AIR VALVE
CN103912414A (en) * 2014-04-16 2014-07-09 无锡隆盛科技股份有限公司 Central rod connecting structure of electric EGR (exhaust gas recycling) valve

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DE3822954A1 (en) 1990-01-18
DE3822954C2 (en) 1997-02-27

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