EP0949414B1 - Air intake system for a combustion engine - Google Patents

Air intake system for a combustion engine Download PDF

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Publication number
EP0949414B1
EP0949414B1 EP98124115A EP98124115A EP0949414B1 EP 0949414 B1 EP0949414 B1 EP 0949414B1 EP 98124115 A EP98124115 A EP 98124115A EP 98124115 A EP98124115 A EP 98124115A EP 0949414 B1 EP0949414 B1 EP 0949414B1
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EP
European Patent Office
Prior art keywords
ducts
air
exhaust gas
individual
gas recirculation
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 - Lifetime
Application number
EP98124115A
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German (de)
French (fr)
Other versions
EP0949414A3 (en
EP0949414A2 (en
Inventor
Osman Sari
Helmut Blank
Wolfgang Dr. Reuter
Michael Sanders
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Pierburg GmbH
Original Assignee
Pierburg GmbH
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Filing date
Publication date
Application filed by Pierburg GmbH filed Critical Pierburg GmbH
Publication of EP0949414A2 publication Critical patent/EP0949414A2/en
Publication of EP0949414A3 publication Critical patent/EP0949414A3/en
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Publication of EP0949414B1 publication Critical patent/EP0949414B1/en
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
    • F02M26/20—Feeding recirculated exhaust gases directly into the combustion chambers or into the intake runners
    • 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
    • F02M26/65—Constructional details of EGR valves
    • F02M26/71—Multi-way 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
    • F02M26/13—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
    • F02M26/65—Constructional details of EGR valves
    • F02M26/66—Lift valves, e.g. poppet valves
    • F02M26/69—Lift valves, e.g. poppet valves having two or more valve-closing members

Definitions

  • the invention relates to an air intake duct system for an internal combustion engine, with a integrated exhaust gas recirculation channel according to the preamble of patent claim 1 or Second
  • this exhaust gas recirculation control has the disadvantage that it is closed when Exhaust gas recirculation valve, in full-load operation of the internal combustion engine, in which no exhaust gas is recirculated via the then connected individual exhaust gas recirculation channels a pressure balance between the individual cylinders of the internal combustion engine leading air intake ducts, whereby the vibration behavior of the sucked air disturbed and the filling of the cylinder is reduced.
  • JP 06081720A an air intake duct system is described in which the disturbance of the Vibration behavior of the air is reduced by that each air intake duct Valve section is associated with the exhaust gas recirculation passage from the respective air intake duct can separate.
  • the control of these valve sections takes place via a central Control valve, with all valve sections when closing the control valve also be closed (Fig.4).
  • Fig. 1 shows a schematic diagram of an air intake duct system 1 for an internal combustion engine according to the prior art, with individual to each cylinder of an internal combustion engine leading air intake ducts 2 and with an integrated exhaust gas recirculation duct 3, whose Exhaust gas flow, here by an exhaust gas recirculation valve 4, is controllable.
  • the exhaust gas recirculation channel 3 opens via individual channels 5 in each of the individual air intake ducts 2 a.
  • this Air intake duct system 1 is the mentioned disadvantage.
  • valve sections 6 by a common Valve actuator 13 are controlled, which responds to control signals.
  • each individual channel 5 with respect to the air intake duct 2, in which it opens, be closed by a valve section 6 in operating phases without exhaust gas recirculation is.
  • individual channels 7, which in air intake ducts 8 with lead to the same vibration behavior, compared to individual channels 9, in the air intake ducts 10 with another identical oscillatory behavior, in operating phases without Exhaust gas recirculation are separated by a valve section 11.
  • valve sections 6 by a respective separate valve actuator 12th 2 (Fig. 2) responsive to control signals, the valve sections 6 open simultaneously while being adjusted to the desired exhaust gas flow rate.
  • valve sections 11 in the embodiment according to the invention consist of a double seat valve 15, which is a connection between the exhaust gas recirculation channel 3 and two intermediate channels 16, 17 controls, wherein the intermediate channels 16, 17 are each connected to the individual channels 7, 9, in the air intake ducts 9, 10 open with the same vibration behavior.
  • the invention improves over the prior art, lower Pollutant exhaust composition achieved, the proportion of recirculated Exhaust gas to the combustion air can thus be increased to border areas, as the Safety distance to the cylinders with the highest or lowest exhaust gas supply can be reduced.
  • the valve sections 6 can be equipped with plate, slide or roller valves be equipped as valve actuators are electrical or pneumatic question.

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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)
  • Characterised By The Charging Evacuation (AREA)

Description

Die Erfindung betrifft ein Luftansaugkanalsystem für eine Brennkraftmaschine, mit einem integrierten Abgasrückführkanal nach dem Oberbegriff des Patentanspruchs 1 bzw. 2.The invention relates to an air intake duct system for an internal combustion engine, with a integrated exhaust gas recirculation channel according to the preamble of patent claim 1 or Second

Im Zuge der weiteren Schadstoffbegrenzung im Brennkraftmaschinenabgas wird der angesaugten Brennluft ein größerer Anteil Abgas beigemischt, so daß bei einer ungleichen Abgasverteilung auf die einzelnen Zylinder der Brennkraftmaschine einige mit Luftmangel betrieben werden, wodurch die Abgaszusammensetzung insgesamt verschlechtert wird.In the course of further emission control in the engine exhaust gas is the aspirated combustion air a larger proportion of added exhaust gas, so that at an unequal Exhaust distribution on the individual cylinders of the engine some with Lack of air are operated, whereby the exhaust composition deteriorates overall becomes.

Bei einer zentralen Einleitung der Abgasrückführung zwischen Luftfilter und Saugrohrsammler besteht ein Problem darin, daß sich bei der Änderung der Abgasrückführung große Totzeiten ergeben, bis die jeweilige Änderung im Brennraum wirksam wird. Das Totvolumen, das durch das Saugrohr gebildet wird, sorgt dafür, daß erst ein großes Volumen mit einer Mischung aus rückgeführtem Abgas- und Brennluft gefüllt wird, ehe dieses Abgas-Brennluftgemisch in den Zylinder gelangt. Bei einem Wechsel von hoher Abgasrückführung auf niedrige Abgasrückführung oder umgekehrt, kann dies dazu führen, daß kurzfristig eine ungünstige Abgas-Brennluftzusammensetzung im Brennraum vorliegt, mit den erwähnten Nachteilen.For a central introduction of the exhaust gas recirculation between the air filter and the intake manifold collector There is a problem in that when changing the exhaust gas recirculation give large dead times until the respective change in the combustion chamber is effective. The Dead volume, which is formed by the suction tube, ensures that only a large volume is filled with a mixture of recirculated exhaust gas and combustion air, before this exhaust gas combustion air mixture enters the cylinder. In a change of high Exhaust gas recirculation to low exhaust gas recirculation or vice versa, this can cause that in the short term, an unfavorable exhaust gas combustion composition in the combustion chamber present, with the mentioned disadvantages.

Um das für die Abgasrückführregelung ungünstige Totvolumen zu umgehen, sind Konzepte zur dezentralen Abgasrückführeinleitung bekannt. Dabei werden einzelne Abgasrückführkanäle bis in die Nähe des Saugrohrzylinderkopfflansches geführt. Jedem Zylinder ist damit mindestens eine Abgasrückführeinleitstelle zugeordnet. Die Abgasrückführregelung erfolgt dabei durch ein einzelnes Abgasrückführventil. To avoid the unfavorable dead volume for the exhaust gas recirculation control are concepts known for decentralized exhaust gas recirculation. Here are individual Exhaust gas recirculation ducts led to the vicinity of the Saugrohrzylinderkopfflansches. Each Cylinder is thus assigned at least one Abgasrückführeinleitstelle. The Exhaust gas recirculation control is performed by a single exhaust gas recirculation valve.

Diese Abgasrückführregelung hat jedoch den Nachteil, daß es bei geschlossenem Abgasrückführventil, im Vollastbetrieb der Brennkraftmaschine, bei dem kein Abgas rückgeführt wird, über die dann miteinander verbundenen einzelnen Abgasrückführkanäle zu einem Druckausgleich zwischen den zu den einzelnen Zylindern der Brennkraftmaschine führenden Luftansaugkanälen kommt, wodurch das Schwingverhalten der angesaugten Luft gestört und die Füllung der Zylinder vermindert wird.However, this exhaust gas recirculation control has the disadvantage that it is closed when Exhaust gas recirculation valve, in full-load operation of the internal combustion engine, in which no exhaust gas is recirculated via the then connected individual exhaust gas recirculation channels a pressure balance between the individual cylinders of the internal combustion engine leading air intake ducts, whereby the vibration behavior of the sucked air disturbed and the filling of the cylinder is reduced.

In der JP 06081720A wird ein Luftansaugkanalsystem beschrieben, bei dem die Störung des Schwingverhaltens der Luft dadurch vermindert wird, daß jedem Luftansaugkanal ein Ventilabschnitt zugeordnet ist, der den Abgasrückführkanal vom jeweiligen Luftansaugkanal trennen kann. Die Steuerung dieser Ventilabschnitte erfolgt dabei über ein zentrales Steuerventil, wobei alle Ventilabschnitte beim Schließen des Steuerventils ebenfalls geschlossen werden (Fig.4).In JP 06081720A an air intake duct system is described in which the disturbance of the Vibration behavior of the air is reduced by that each air intake duct Valve section is associated with the exhaust gas recirculation passage from the respective air intake duct can separate. The control of these valve sections takes place via a central Control valve, with all valve sections when closing the control valve also be closed (Fig.4).

In der EP 0 911 762 ist schließlich in jeder Saugleitung an der Mündungssteile der Abgasrückführleitung ein elektromagnetisch betätigbares AGR Ventil angeordnet.In EP 0 911 762, finally, in each suction line at the mouth parts of the exhaust gas recirculation line arranged electromagnetically operable EGR valve.

Es ist daher Aufgabe der Erfindung, Maßnahmen aufzufinden, mit denen eine genauere Abgasverteilung auf die einzelnen Zylinder erreichbar wird, ohne daß das Schwingverhalten der angesaugten Luft gestört und damit die Füllung der Zylinder vermindert wird.It is therefore an object of the invention to find measures with which a more accurate exhaust gas distribution can be reached on the individual cylinders, without the vibration behavior of the sucked air disturbed and thus the filling of the cylinder is reduced.

Diese Aufgabe ist durch die im Kennzeichen des Patentanspruchs 1 angegebenen Merkmale gelöst worden. Vorteilhafte Weiterbildungen sind mit den Unteransprüchen angegeben.This object is achieved by the specified in the characterizing part of claim 1 Features have been solved. Advantageous developments are with the dependent claims specified.

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

Die Zeichnung zeigt:

  • Fig. 1,2 und 4
    Prinzipbilder eines Luftansaugkanalsystems des Standes der Technik
  • Fig. 3
    erfinderische Ausführung des Luftansaugkanalsystems nach Fig. 1 bzw. 2,4
    • The drawing shows:
  • FIGS. 1, 2 and 4
    Schematic images of an air intake duct system of the prior art
  • Fig. 3
    inventive embodiment of the air intake duct system according to FIGS. 1 and 2,4

    • Fig. 1 zeigt ein Prinzipbild eines Luftansaugkanalsystems 1 für eine Brennkraftmaschine nach dem Stand der Technik, mit einzelnen zu jedem Zylinder einer Brennkraftmaschine führenden Luftansaugkanälen 2 und mit einem integrierten Abgasrückführkanal 3, dessen Abgasdurchsatz, hier von einem Abgasrückführventil 4, steuerbar ist. Der Abgasrückführkanal 3 mündet über Einzelkanäle 5 in jeden der einzelnen Luftansaugkanäle 2 ein. Bei diesem Luftansaugkanalsystem 1 besteht der erwähnte Nachteil.Fig. 1 shows a schematic diagram of an air intake duct system 1 for an internal combustion engine according to the prior art, with individual to each cylinder of an internal combustion engine leading air intake ducts 2 and with an integrated exhaust gas recirculation duct 3, whose Exhaust gas flow, here by an exhaust gas recirculation valve 4, is controllable. The exhaust gas recirculation channel 3 opens via individual channels 5 in each of the individual air intake ducts 2 a. In this Air intake duct system 1 is the mentioned disadvantage.

    Es können auch, wie in Fig. 4 dargestellt ist, die Ventilabschnitte 6 durch ein gemeinsames Ventilstellglied 13 gesteuert werden, das auf Steuersignale anspricht.It can also, as shown in Fig. 4, the valve sections 6 by a common Valve actuator 13 are controlled, which responds to control signals.

    Durch die Maßnahme, daß zusätzlich ein Abgasrückführventil 14 den Durchsatz des Abgasrückführkanals 3 steuert, wie in Fig. 4 dargestellt ist, können die Ventilabschnitte 6 mit einfachsten Auf-Zu-Ventilen ausgestattet werden.By the measure that in addition an exhaust gas recirculation valve 14, the flow rate of the exhaust gas recirculation channel 3 controls, as shown in Fig. 4, the valve sections 6 with the simplest on-off valves.

    Bei einer Ausführung eines Luftansaugkanalsystem nach Fig. 2 ist vorgesehen, daß jeder Einzelkanal 5 gegenüber dem Luftansaugkanal 2, in den er einmündet, in Betriebsphasen ohne Abgasrückführung durch einen Ventilabschnitt 6 verschließbar ist. Bei der erfindungsgemäßen Ausführung nach Fig. 3, ist vorgesehen daß Einzelkanäle 7, die in Luftansaugkanäle 8 mit gleichem Schwingverhalten einmünden, gegenüber Einzelkanälen 9, die in Luftansaugkanäle 10 mit einem anderen gleichen Schwingverhalten einmünden, in Betriebsphasen ohne Abgasrückführung durch einen Ventilabschnitt 11 getrennt sind.In one embodiment of a Luftansaugkanalsystem of FIG. 2 is provided that each individual channel 5 with respect to the air intake duct 2, in which it opens, be closed by a valve section 6 in operating phases without exhaust gas recirculation is. In the embodiment according to the invention of FIG. 3, it is provided that individual channels 7, which in air intake ducts 8 with lead to the same vibration behavior, compared to individual channels 9, in the air intake ducts 10 with another identical oscillatory behavior, in operating phases without Exhaust gas recirculation are separated by a valve section 11.

    Diese Maßnahmen verhindern das Durchschlagen des Ansaugdruckes des Luftansaugkanals 2, 8, 10 in jeweils einen der anderen über die Einzelkanäle 5, 7, 9.These measures prevent the penetration of the suction pressure of the air intake duct 2, 8, 10 in each one of the other via the individual channels 5, 7, 9th

    Es ist vorteilhaft, wenn die Ventilabschnitte 6 durch jeweils ein separates Ventilstellglied 12 gesteuert werden (Fig.2), das auf Steuersignale anspricht, wobei die Ventilabschnitte 6 gleichzeitig geöffnet und dabei auf den gewünschten Abgasdurchsatz eingestellt werden.It is advantageous if the valve sections 6 by a respective separate valve actuator 12th 2 (Fig. 2) responsive to control signals, the valve sections 6 open simultaneously while being adjusted to the desired exhaust gas flow rate.

    Schließlich können die Ventilabschnitte 11 in der erfindungsgemäßen Ausführungsform gemäß Fig. 3 aus einem Doppelsitzventil 15 bestehen, das eine Verbindung zwischen dem Abgasrückführkanal 3 und zwei Zwischenkanälen 16, 17 steuert, wobei die Zwischenkanäle 16, 17 jeweils mit den Einzelkanälen 7, 9 verbunden sind, die in die Luftansaugkanäle 9, 10 mit dem gleichen Schwingverhalten einmünden.Finally, the valve sections 11 in the embodiment according to the invention As shown in FIG. 3 consist of a double seat valve 15, which is a connection between the exhaust gas recirculation channel 3 and two intermediate channels 16, 17 controls, wherein the intermediate channels 16, 17 are each connected to the individual channels 7, 9, in the air intake ducts 9, 10 open with the same vibration behavior.

    Hierdurch ist der Aufwand an Ventilstellgliedern reduziert. As a result, the cost of valve actuators is reduced.

    Durch die Erfindung wird eine gegenüber dem Stand der Technik verbessert, geringere Schadstoffe aufweisende Abgaszusammensetzung erreicht, der Anteil des rückgeführten Abgases an der Brennluft kann somit bis in Grenzbereiche erhöht werden, da der Sicherheitsabstand zu den Zylindern mit der höchsten oder geringsten Abgaszuführung verringert werden kann. Die Ventilabschnitte 6 können beliebig mit Teller-, Schieber- oder Walzenventilen ausgestattet sein, als Ventilstellglieder kommen elektrische oder pneumatische infrage.The invention improves over the prior art, lower Pollutant exhaust composition achieved, the proportion of recirculated Exhaust gas to the combustion air can thus be increased to border areas, as the Safety distance to the cylinders with the highest or lowest exhaust gas supply can be reduced. The valve sections 6 can be equipped with plate, slide or roller valves be equipped as valve actuators are electrical or pneumatic question.

    In den Betriebsphasen ohne Abgasrückführung wird das Schwingverhalten der Luft in den einzelnen Luftansaugkanälen nicht gestört.In the operating phases without exhaust gas recirculation the oscillation behavior becomes The air in the individual Luftansaugkanälen not disturbed.

    Claims (3)

    1. Air-intake duct system for an internal combustion engine, with individual air-intake ducts leading to each cylinder of an internal combustion engine and with an integrated exhaust gas recirculation duct, the exhaust gas throughput of which can be controlled and which opens via individual ducts into each of the individual air-intake ducts, characterised in that only the individual ducts (7) which open into air-intake ducts (8) with identical vibration response are separated by a valve section (11) in operating phases without exhaust-gas recirculation from the individual ducts (9) which open into air-intake ducts (10) with a different identical vibration response.
    2. Air-intake duct system according to Claim 1, characterised in that the valve sections (11) are each controlled by a separate valve actuating member (12) which responds to control signals.
    3. Air-intake duct system according to Claim 1, characterised in that the valve section (11) consists of a double-seat valve (15) which controls a connection between the exhaust-gas recirculation duct (3) and two intermediate ducts (16, 17), wherein the intermediate ducts (16, 17) are each connected to the individual ducts (7, 9) which open into the air-intake ducts (9, 10) with identical vibration response.
    EP98124115A 1998-04-11 1998-12-18 Air intake system for a combustion engine Expired - Lifetime EP0949414B1 (en)

    Applications Claiming Priority (2)

    Application Number Priority Date Filing Date Title
    DE19816266 1998-04-11
    DE19816266A DE19816266A1 (en) 1998-04-11 1998-04-11 Air intake duct system for an internal combustion engine

    Publications (3)

    Publication Number Publication Date
    EP0949414A2 EP0949414A2 (en) 1999-10-13
    EP0949414A3 EP0949414A3 (en) 2000-03-22
    EP0949414B1 true EP0949414B1 (en) 2005-09-28

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    Family Applications (1)

    Application Number Title Priority Date Filing Date
    EP98124115A Expired - Lifetime EP0949414B1 (en) 1998-04-11 1998-12-18 Air intake system for a combustion engine

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    EP (1) EP0949414B1 (en)
    DE (2) DE19816266A1 (en)

    Families Citing this family (8)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    DE19847288B4 (en) * 1998-10-14 2014-12-11 Pierburg Gmbh Exhaust gas recirculation valve for an internal combustion engine
    DE19900640C1 (en) * 1999-01-11 2000-05-18 Siemens Ag Exhaust gas feedback device for multi-cylinder IC engine
    DE10015210A1 (en) 2000-03-27 2001-10-04 Pierburg Ag Air intake channel system for IC engines has cover fixed to housing to define exhaust return channel, with integral flat slide element valves and valve drive
    DE10017204B4 (en) * 2000-04-06 2006-04-20 Audi Ag Air ducting system for a multi-cylinder internal combustion engine
    DE10028131C1 (en) * 2000-06-07 2001-12-13 Daimler Chrysler Ag Exhaust gas feedback system for internal combustion engine has flange component provided with exhaust gas feedback channels leading to exhaust gas feedback line and flow control valve
    DE10030287A1 (en) * 2000-06-20 2002-01-03 Mann & Hummel Filter System for sucking in air for an internal combustion engine includes single air intake channels leading to each internal combustion cylinder and a combustion gas return channel feeding into each air intake channel
    DE10032562A1 (en) * 2000-07-05 2002-01-17 Volkswagen Ag IC engine with exhaust recirculation has recirculation channel extending from bottom dead center in cylinder crankcase upwards in direction of flow path in front of intake valve
    DE102018209331A1 (en) 2018-06-12 2019-12-12 Volkswagen Aktiengesellschaft Internal combustion engine with several combustion chambers and with a high-pressure exhaust gas recirculation

    Family Cites Families (5)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    JP2587715B2 (en) * 1990-08-31 1997-03-05 日野自動車工業株式会社 EGR device for engine
    US5329912A (en) * 1991-12-19 1994-07-19 Yamaha Hatsudoki Kabushiki Kaisha Induction system for an internal combustion engine
    JPH0681720A (en) * 1992-09-01 1994-03-22 Toyota Autom Loom Works Ltd Exhaust gas recirculation device of multi-cylinder engine
    DE19622891C2 (en) * 1996-06-07 1998-04-09 Ranco Inc Exhaust gas recirculation system
    AT3671U1 (en) * 1997-01-23 2000-06-26 Avl List Gmbh INTERNAL COMBUSTION ENGINE

    Also Published As

    Publication number Publication date
    EP0949414A3 (en) 2000-03-22
    DE59813081D1 (en) 2005-11-03
    EP0949414A2 (en) 1999-10-13
    DE19816266A1 (en) 1999-10-14

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