DE19842349B4 - Exhaust gas recirculation system - Google Patents

Exhaust gas recirculation system Download PDF

Info

Publication number
DE19842349B4
DE19842349B4 DE19842349A DE19842349A DE19842349B4 DE 19842349 B4 DE19842349 B4 DE 19842349B4 DE 19842349 A DE19842349 A DE 19842349A DE 19842349 A DE19842349 A DE 19842349A DE 19842349 B4 DE19842349 B4 DE 19842349B4
Authority
DE
Germany
Prior art keywords
exhaust gas
gas recirculation
throttle
valve
recirculation valve
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.)
Expired - Fee Related
Application number
DE19842349A
Other languages
German (de)
Other versions
DE19842349A1 (en
Inventor
Hans-Ulrich Kühnel
Michael Sanders
Hans-Jürgen Müller
Manfred Steiner
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
Priority to DE19842349A priority Critical patent/DE19842349B4/en
Publication of DE19842349A1 publication Critical patent/DE19842349A1/en
Application granted granted Critical
Publication of DE19842349B4 publication Critical patent/DE19842349B4/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Images

Classifications

    • 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
    • F02D9/08—Throttle valves specially adapted therefor; Arrangements of such valves in conduits
    • F02D9/10—Throttle valves specially adapted therefor; Arrangements of such valves in conduits having pivotally-mounted flaps
    • F02D9/1065—Mechanical control linkage between an actuator and the flap, e.g. including levers, gears, springs, clutches, limit stops of the like
    • 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
    • F02D9/08—Throttle valves specially adapted therefor; Arrangements of such valves in conduits
    • F02D9/10—Throttle valves specially adapted therefor; Arrangements of such valves in conduits having pivotally-mounted flaps
    • F02D9/109—Throttle valves specially adapted therefor; Arrangements of such valves in conduits having pivotally-mounted flaps having two or more flaps
    • F02D9/1095—Rotating on a common axis, e.g. having a common shaft
    • 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
    • F02M26/38—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories with two or more EGR valves disposed in parallel
    • 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
    • F02M26/44—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 a main EGR passage is branched into multiple passages
    • 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
    • F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
    • F02M26/39—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories with two or more EGR valves disposed in series
    • 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
    • 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
    • F02M26/70—Flap valves; Rotary valves; Sliding valves; Resilient valves

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)

Abstract

Bekannte Abgasrückführsysteme weisen störende, grosse Volumen ihrer Abgasrückführkanäle auf. Hiergegen sieht die Erfindung vor, dass jeder Einzelabgaskanal (8) ein die Abgasrückführmenge bestimmendes Drosselorgan (9) aufweist, das über eine mehrere Drosselorgane (9) aufnehmende Drosselwelle (10) betätigt wird und dass das Abgasrückführventil (4) und die Drosselwelle (10) von einem gemeinsamen Stellglied (11) betätigt werden. Hierdurch werden Funktionseigenschaften des Luftansaugkanalsystems wie Aufladeeffekte durch die schwingende Luftsäule nicht beeinträchtigt.Known exhaust gas recirculation systems have disturbing, large volumes of their exhaust gas recirculation channels. Against this, the invention provides that each individual exhaust gas duct (8) has a throttle element (9) which determines the exhaust gas recirculation quantity and which is actuated via a throttle shaft (10) receiving a plurality of throttle elements (9) and the exhaust gas recirculation valve (4) and the throttle shaft (10). be actuated by a common actuator (11). As a result, functional properties of the air intake duct system such as charging effects are not affected by the oscillating air column.

Description

Die Erfindung betrifft ein Abgasrückführsystem nach dem Oberbegriff des Patentanspruchs 1.The invention relates to an exhaust gas recirculation system according to the preamble of patent claim 1.

Bei einem derartigen Abgasrückführsystem ( DE 196 22 891 A1 ) ist eine Kennliniensteuerung bekannt, bei der das Abgasrückführsystem in Abhängigkeit von der Motordrehzahl oder der angesaugten Brennluftmenge betätigt wird.In such an exhaust gas recirculation system ( DE 196 22 891 A1 ), a characteristic control is known, in which the exhaust gas recirculation system is actuated in dependence on the engine speed or the intake quantity of combustion air.

Insbesondere beim Dieselmotor oder Benzindirekteinspritzmotor haben sich neue Möglichkeiten der Abstimmung von Drall und Zylinderfüllmengen ergeben, wobei sich bei bisher üblichen Abgasrückführsystemen grosse Volumina ihrer Abgasrückführkanäle als störend erwiesen haben.Especially in the case of the diesel engine or gasoline direct injection engine, new possibilities have been found for the coordination of swirl and cylinder charge quantities, with large volumes of their exhaust gas recirculation passages having proved to be troublesome in previously customary exhaust gas recirculation systems.

Es ist daher Aufgabe der Erfindung, Massnahmen aufzufinden, mit denen ein gattungsgemässes Abgasrückführsystem im Zusammenhang mit einem Luftansaugkanalsystem für Diesel- oder Benzindirekteinspritzmotoren betrieben werden kann, wobei sich die Anforderungen an niedrige Schadstoffemissionen erfüllen lassen müssen.It is therefore an object of the invention to find measures with which a generic exhaust gas recirculation system can be operated in conjunction with an air intake duct system for diesel or gasoline direct injection engines, with the requirements for low pollutant emissions must meet.

Diese Aufgabe ist durch die im Kennzeichen des Patentanspruchs 1 angegebenen Merkmale gelöst. Vorteilhafte Weiterbildungen sind mit den Unteransprüchen angegeben.This object is achieved by the features specified in the characterizing part of patent claim 1. Advantageous developments are specified by the subclaims.

Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung schematisch dargestellt und wird nachfolgend beschrieben.An embodiment of the invention is shown schematically in the drawing and will be described below.

Die Zeichnung zeigt ein Abgasrückführsystem 1 in einem Luftansaugkanalsystem 2 einer Brennkraftmaschine 3, mit einem Abgasrückführventil 4 in einer zentralen Abgasrückführleitung 5 und einem stromab des Abgasrückführventils 4 angeordneten Abgasverteilerabschnitt 6, mit dem zu jedem Zylinder der Brennkraftmaschine führende Luftansaugkanäle 7 über Einzelabgaskanäle 8 verbunden sind.The drawing shows an exhaust gas recirculation system 1 in an air intake duct system 2 an internal combustion engine 3 , with an exhaust gas recirculation valve 4 in a central exhaust gas recirculation line 5 and a downstream of the exhaust gas recirculation valve 4 arranged exhaust manifold section 6 , with leading to each cylinder of the engine air intake ducts 7 via individual exhaust ducts 8th are connected.

Es ist nun vorgesehen, dass jeder Einzelabgaskanal 8 ein die Abgasrückführmenge bestimmendes Drosselorgan 9 aufweist, das über eine mehrere Drosselorgane 9 aufnehmende Drosselwelle 10 betätigt wird, wobei das Abgasrückführventil 4 und die Drosselwelle 10 von einem gemeinsamen Stellglied 11 betätigt werden.It is now envisaged that each individual exhaust duct 8th a throttle body determining the exhaust gas recirculation amount 9 has, over a multiple throttle bodies 9 receiving throttle shaft 10 is actuated, wherein the exhaust gas recirculation valve 4 and the throttle shaft 10 from a common actuator 11 be operated.

Durch diese Massnahmen wird erreicht, dass über die Drosselorgane 9 die erforderliche Abgasrückführmenge eingestellt werden kann, wobei die Drosselorgane 9 in den Betriebsphasen der Brennkraftmaschine ohne Abgasrückführung geschlossen gehalten sind, so dass die in den Abgasrückführkanälen befindliche Abgasmenge gegenüber dem Luftansaugkanalsystem 2 abgesperrt ist und die Funktionseigenschaften des Luftansaugkanalsystems wie Aufladeeffekte durch die schwingende Luftsäule nicht beeinträchtigt werden. Eine grössere Leckage ist durch das ebenfalls geschlossene Abgasrückführventil 4 verhindet.Through these measures is achieved that via the throttle bodies 9 the required exhaust gas recirculation amount can be adjusted, wherein the throttle bodies 9 are kept closed in the operating phases of the internal combustion engine without exhaust gas recirculation, so that the amount of exhaust gas located in the exhaust gas recirculation channels relative to the air intake duct system 2 is shut off and the functional properties of the air intake duct system such as charging effects are not affected by the oscillating air column. A major leak is through the likewise closed exhaust gas recirculation valve 4 verhindet.

Darüber hinaus bedeutet die erfindungsgemässe Ausführung eine kostensparende Bauteileverringerung durch Wegfall von Einzelventilen, die der behandelte Stand der Technik aufweist.In addition, the inventive design means a cost-saving component reduction by eliminating individual valves, the treated prior art has.

Es ist vorteilhaft, wen das Abgasrückführventil 4 von einem Drosselorgan gebildet ist, das über eine Drosselwelle oder Stellstange 12 betätigt wird, die gleichzeitig auf die Drosselwelle 10 der Einzelabgaskanäle 8 einwirkt.It is advantageous who the exhaust gas recirculation valve 4 is formed by a throttle body, via a throttle shaft or control rod 12 is pressed simultaneously on the throttle shaft 10 the individual exhaust ducts 8th acts.

in der Zeichnung ist die Drosselwelle 10 mit einem Hebel 13 ausgestattet, der auf die Welle oder wie dargestellt die Stellstange 12 einwirkt und von dieser verstellt werden kann.in the drawing is the throttle shaft 10 with a lever 13 equipped on the shaft or as shown the control rod 12 acts and can be adjusted by this.

Für eine vorteilhafte Abstimmung der Abgasrückführung ist vorgesehen, dass das Abgasrückführventil 4 als Auf-Zu-Ventil ausgebildet ist und das Drosselorgan 9 der Einzelabgaskanäle 8 stufenlos verstellbar ist.For an advantageous vote of the exhaust gas recirculation is provided that the exhaust gas recirculation valve 4 is designed as an on-off valve and the throttle body 9 the individual exhaust ducts 8th is infinitely adjustable.

Es ist vorteilhaft, wenn das Drosselorgan 9 in den Einzelabgaskanälen 8 eine stellungsabhängige Durchlasscharakteristik aufweist, d. h. zum Beispiel mit einer Kugelzone im Drosselabschnitt zusammenwirkt, die der leichten Vorstellbarkeit wegen nicht extra dargestellt werden muss.It is advantageous if the throttle body 9 in the individual exhaust ducts 8th has a position-dependent transmission characteristic, ie, for example, cooperates with a ball zone in the throttle section, which does not have to be represented separately for the ease of imaginability.

Für eine schnelle Verstellung des Abgasrückführventils 4 kann eine nicht dargestellte Ausführung vorteilhaft sein, bei der das Abgasrückführventil 4 durch eine bistabile Kippfeder in eine seiner Endstellungen belastet ist.For a quick adjustment of the exhaust gas recirculation valve 4 a non-illustrated embodiment may be advantageous in which the exhaust gas recirculation valve 4 is loaded by a bistable tilt spring in one of its end positions.

Claims (5)

Abgasrückführsystem in einem Luftansaugkanalsystem einer Brennkraftmaschine, mit einem Abgasrückführventil in einer zentralen Abgasrückführleitung und einem stromab des Abgasrückführventils angeordneten Abgasverteilerabschnitt, mit dem zu jedem Zylinder der Brennkraftmaschine führende Luftansaugkanäle über Einzelabgaskanäle verbunden sind, dadurch gekennzeichnet, dass jeder Einzelabgaskanal (8) ein die Abgasrückführmenge bestimmendes Drosselorgan (9) aufweist, das über eine mehrere Drosselorgane (9) aufnehmende Drosselwelle (10) betätigt wird und dass das Abgasrückführventil (4) und die Drosselwelle (10) von einem gemeinsamen Stellglied (11) betätigt werden.Exhaust gas recirculation system in an air intake duct system of an internal combustion engine, with an exhaust gas recirculation valve in a central exhaust gas recirculation line and a downstream of the exhaust gas recirculation valve disposed exhaust manifold, are connected to each cylinder of the engine leading air intake ducts via individual exhaust channels, characterized in that each Einzelabgaskanal ( 8th ) a throttle element determining the exhaust gas recirculation quantity ( 9 ), which has a plurality of throttle bodies ( 9 ) receiving throttle shaft ( 10 ) and that the exhaust gas recirculation valve ( 4 ) and the throttle shaft ( 10 ) from a common actuator ( 11 ). Abgasrückführsystem nach Anspruch 1, dadurch gekennzeichnet, dass das Abgasrückführventil (4) von einem Drosselorgan gebildet ist, das über eine Drosselwelle oder Stellstange (12) betätigt wird, die gleichzeitig auf die Drosselwelle (10) der Einzelabgaskanäle (8) einwirkt.Exhaust gas recirculation system according to claim 1, characterized in that the Exhaust gas recirculation valve ( 4 ) is formed by a throttle body, which via a throttle shaft or control rod ( 12 ), which simultaneously on the throttle shaft ( 10 ) of the individual exhaust gas channels ( 8th ) acts. Abgasrückführsystem nach Anspruch 2, dadurch gekennzeichnet, dass das Abgasrückführventil (4) als Auf-Zu-Ventil ausgebildet ist und das Drosselorgan (9) der Einzelabgaskanäle (8) stufenlos verstellbar ist.Exhaust gas recirculation system according to claim 2, characterized in that the exhaust gas recirculation valve ( 4 ) is designed as an on-off valve and the throttle body ( 9 ) of the individual exhaust gas channels ( 8th ) is infinitely adjustable. Abgasrückführsystem nach Anspruch 2, dadurch gekennzeichnet, dass das Drosselorgan (9) mit einer vorgegebenen stellungsabhängigen Durchlasscharakteristik ausgeführt ist.Exhaust gas recirculation system according to claim 2, characterized in that the throttle member ( 9 ) is executed with a given position-dependent transmission characteristic. Abgasrückführsystem nach Anspruch 3 oder 4, dadurch gekennzeichnet, dass das Abgasrückführventil (4) durch eine bistabile Kippfeder in eine seiner Endstellungen belastet ist.Exhaust gas recirculation system according to claim 3 or 4, characterized in that the exhaust gas recirculation valve ( 4 ) is loaded by a bistable tilt spring in one of its end positions.
DE19842349A 1998-09-16 1998-09-16 Exhaust gas recirculation system Expired - Fee Related DE19842349B4 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19842349A DE19842349B4 (en) 1998-09-16 1998-09-16 Exhaust gas recirculation system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19842349A DE19842349B4 (en) 1998-09-16 1998-09-16 Exhaust gas recirculation system

Publications (2)

Publication Number Publication Date
DE19842349A1 DE19842349A1 (en) 2000-03-23
DE19842349B4 true DE19842349B4 (en) 2013-07-04

Family

ID=7881124

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19842349A Expired - Fee Related DE19842349B4 (en) 1998-09-16 1998-09-16 Exhaust gas recirculation system

Country Status (1)

Country Link
DE (1) DE19842349B4 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19851922B4 (en) * 1998-11-11 2013-07-11 Pierburg Gmbh Exhaust gas recirculation system
DE19905187B4 (en) * 1999-02-09 2013-03-07 Pierburg Gmbh Drallklappenflansch
DE10100966A1 (en) * 2001-01-11 2002-07-18 Pierburg Ag Control device for an actuator
DE102007033675A1 (en) 2007-07-17 2009-01-22 Pierburg Gmbh Exhaust gas recirculation device for an internal combustion engine
DE102008024571B4 (en) 2008-05-21 2010-03-04 Pierburg Gmbh Exhaust gas recirculation device for an internal combustion engine

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19622891A1 (en) * 1996-06-07 1997-12-11 Ranco Inc Exhaust gas recirculation system

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19622891A1 (en) * 1996-06-07 1997-12-11 Ranco Inc Exhaust gas recirculation system

Also Published As

Publication number Publication date
DE19842349A1 (en) 2000-03-23

Similar Documents

Publication Publication Date Title
DE19545934A1 (en) Gate valve inlet system for an internal combustion engine
DE2353908B2 (en) Multi-cylinder internal combustion engine
EP0740064A1 (en) Exhaust gas recirculation control valve
DE4209684A1 (en) Flow control device for gases through engine cylinder head - uses gas ducts in walls of manifold to reduce swirl effects and increase flow-rates
DE19842349B4 (en) Exhaust gas recirculation system
DE3711859A1 (en) Multicylinder reciprocating piston internal combustion engine
DE19649466B4 (en) Method for controlling a reciprocating internal combustion engine with at least two intake valves per cylinder
DE3040952C2 (en) Intake system for an internal combustion engine
EP1849976B1 (en) Piston engine
DE4204434C2 (en) Control valve for exhaust gas recirculation
DE19851922B4 (en) Exhaust gas recirculation system
DE19928892A1 (en) Internal combustion engine with fuel injection uses first and second inlet channels and suction and direct injection systems respectively for appropriate operating conditions.
EP0325162B1 (en) Power control process for an internal-combustion piston engine with controlled cylinder charge
EP1020635B1 (en) Intake air duct for diesel engines
DE3434476A1 (en) Mixture-compressing, applied-ignition reciprocating-piston internal combustion engine
DE19526241B4 (en) Air intake duct system for internal combustion engines
DE3839451C2 (en)
DE19504348B4 (en) Exhaust gas recirculation control valve
DE19847288B4 (en) Exhaust gas recirculation valve for an internal combustion engine
DE19905187B4 (en) Drallklappenflansch
DE4126428A1 (en) Inlet manifold for IC engine - has mechanism to vary effective length of inlet duct to each inlet valve
EP1481150A1 (en) Cylinder head for an internal combustion engine
DE102015213835A1 (en) Internal combustion engine for a motor vehicle and operating method
DE19622378A1 (en) Throttle valve connection for vehicle engine with throttle valve adjustable in duct
DE10130013A1 (en) Exhaust gas recirculation arrangement

Legal Events

Date Code Title Description
8127 New person/name/address of the applicant

Owner name: PIERBURG GMBH, 41460 NEUSS, DE

8110 Request for examination paragraph 44
R018 Grant decision by examination section/examining division
R020 Patent grant now final

Effective date: 20131005

R119 Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee
R079 Amendment of ipc main class

Free format text: PREVIOUS MAIN CLASS: F02M0025070000

Ipc: F02M0026380000