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EP0949414A2 - Air intake system for a combustion engine - Google Patents

Air intake system for a combustion engine Download PDF

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Publication number
EP0949414A2
EP0949414A2 EP98124115A EP98124115A EP0949414A2 EP 0949414 A2 EP0949414 A2 EP 0949414A2 EP 98124115 A EP98124115 A EP 98124115A EP 98124115 A EP98124115 A EP 98124115A EP 0949414 A2 EP0949414 A2 EP 0949414A2
Authority
EP
European Patent Office
Prior art keywords
air intake
exhaust gas
ducts
gas 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.)
Granted
Application number
EP98124115A
Other languages
German (de)
French (fr)
Other versions
EP0949414A3 (en
EP0949414B1 (en
Inventor
Osman Sari
Helmut Blank
Wolfgang Dr. Reuter
Michael Sanders
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 EP0949414A2 publication Critical patent/EP0949414A2/en
Publication of EP0949414A3 publication Critical patent/EP0949414A3/en
Application granted granted Critical
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 duct according to the preamble of claim 1 or 2nd
  • this exhaust gas recirculation control has the disadvantage that it is closed Exhaust gas recirculation valve, in full load operation of the internal combustion engine, in which no exhaust gas is returned via the individual exhaust gas recirculation channels which are then connected to one another a pressure equalization between the individual cylinders of the internal combustion engine leading air intake ducts, which causes the vibration behavior of the intake air disturbed and the filling of the cylinders is reduced.
  • FIG. 1 shows a basic 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, the Exhaust gas throughput, here from an exhaust gas recirculation valve 4, can be controlled.
  • the exhaust gas recirculation duct 3 opens into each of the individual air intake ducts 2 via individual ducts 5 on.
  • this air intake duct system 1 there is the disadvantage mentioned.
  • each individual duct 5 with respect to the air intake duct 2, into which it opens, in operating phases without exhaust gas recirculation can be closed by a valve section 6 is, or in an embodiment according to FIG. 3, that individual channels 7, which in air intake channels 8 open with the same vibration behavior compared to individual channels 9, which open into air intake ducts 10 with another same vibration behavior, in Operating phases without exhaust gas recirculation are separated by a valve section 11.
  • valve sections 6 each have a separate valve actuator 12 are controlled (Fig.), which responds to control signals, the valve sections 6 opened simultaneously and adjusted to the desired exhaust gas flow.
  • valve sections 6 pass through a common valve actuator 13 can be controlled, which responds to control signals.
  • valve sections 6 can be equipped with the simplest on-off valves.
  • valve sections 11 consist of a double seat valve 15, which is a connection controls between the exhaust gas recirculation channel 3 and two intermediate channels 16, 17, wherein the intermediate channels 16, 17 are each connected to the individual channels 7, 9, which in the Air intake ducts 9, 10 open with the same vibration behavior. This reduces the effort required for valve actuators.
  • the invention improves, less than the prior art Exhaust gas composition containing pollutants reached, the proportion of the recycled Exhaust gas in the combustion air can thus be increased to the limit because the Safety distance to the cylinders with the highest or lowest exhaust gas supply can be reduced.
  • the valve sections 6 can be any with plate, slide or Roller valves can be equipped, as valve actuators come electrical or pneumatic question.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Exhaust-Gas Circulating Devices (AREA)
  • Characterised By The Charging Evacuation (AREA)

Abstract

Each exhaust gas individual duct (5), compared to the air suction duct (2) in which it opens out, in operating phases without exhaust air feedback, is closable by a valve section (6). The valve sections are controlled respectively by a separate adjusting element (12), which responds to control signals.

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 duct according to the preamble of claim 1 or 2nd

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 the further limitation of pollutants in the internal combustion engine exhaust sucked in combustion air, a larger proportion of exhaust gas is mixed, so that at an unequal Exhaust gas distribution to the individual cylinders of the internal combustion engine with some Air shortages are operated, which worsens the overall exhaust gas composition 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.With a central introduction of the exhaust gas recirculation between the air filter and intake manifold there is a problem that when changing the exhaust gas recirculation long dead times result until the respective change in the combustion chamber takes effect. The Dead volume, which is formed by the intake manifold, 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 gets into the cylinder. When changing from 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 air composition in the combustion chamber is present, with the disadvantages mentioned.

Um das für die Abgasrückührregelung 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. There are concepts to avoid the dead volume, which is unfavorable for exhaust gas recirculation control known for decentralized exhaust gas recirculation. In doing so, individual Exhaust gas recirculation channels are routed close to the intake manifold cylinder head flange. Each Cylinder is thus assigned at least one exhaust gas recirculation point. The Exhaust gas recirculation is controlled 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 Exhaust gas recirculation valve, in full load operation of the internal combustion engine, in which no exhaust gas is returned via the individual exhaust gas recirculation channels which are then connected to one another a pressure equalization between the individual cylinders of the internal combustion engine leading air intake ducts, which causes the vibration behavior of the intake air disturbed and the filling of the cylinders is reduced.

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 precise Exhaust gas distribution to the individual cylinders can be reached without the vibration behavior the intake air is disturbed and thus the filling of the cylinders is reduced.

Diese Aufgabe ist durch die im Kennzeichen des Patentanspruchs 1 bzw. 2 angegebenen Merkmale gelöst worden. Vorteilhafte Weiterbildungen sind mit den Unteransprüchen angegeben.This object is achieved by the features of claim 1 and 2 respectively specified features have been resolved. Advantageous further developments are with the Subclaims 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 is below described.

Die Zeichnung zeigt:

  • Fig. 1
    ein Prinzipbild eines Luftansaugkanalsystems des Standes der Technik,
  • Fig. 2, 3 und 4
    erfinderische Ausführungen des Luftansaugkanalsystems nach Fig. 1.
    • The drawing shows:
  • Fig. 1
    a schematic diagram of an air intake duct system of the prior art,
  • 2, 3 and 4
    Inventive designs of the air intake duct system according to FIG. 1.

    • 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. 1 shows a basic 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, the Exhaust gas throughput, here from an exhaust gas recirculation valve 4, can be controlled. The exhaust gas recirculation duct 3 opens into each of the individual air intake ducts 2 via individual ducts 5 on. In this air intake duct system 1 there is the disadvantage mentioned.

    Erfindungsgemäß ist nun bei einer Ausführung eines Luftansaugkanalsystem nach Fig. 2 vorgesehen, daß jeder Einzelkanal 5 gegenüber dem Luftansaugkanal 2, in den er einmündet, in Betriebsphasen ohne Abgasrückführung durch einen Ventilabschnitt 6 verschließbar ist, bzw. bei einer Ausführung nach Fig. 3, 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.According to the invention, in an embodiment of an air intake duct system according to FIG. 2 provided that each individual duct 5 with respect to the air intake duct 2, into which it opens, in operating phases without exhaust gas recirculation can be closed by a valve section 6 is, or in an embodiment according to FIG. 3, that individual channels 7, which in air intake channels 8 open with the same vibration behavior compared to individual channels 9, which open into air intake ducts 10 with another same vibration 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 suction pressure of the air intake duct from breaking through 2, 8, 10 in one of the other via the individual channels 5, 7, 9.

    Es ist vorteilhaft, wenn die Ventilabschnitte 6 durch jeweils ein separates Ventilstellglied 12 gesteuert werden (Fig.), 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 each have a separate valve actuator 12 are controlled (Fig.), Which responds to control signals, the valve sections 6 opened simultaneously and adjusted to the desired exhaust gas flow.

    Es kann vorteilhaft sein, wie in Fig. 4 dargestellt ist, wenn die Ventilabschnitte 6 durch ein gemeinsames Ventilstellglied 13 gesteuert werden, das auf Steuersignale anspricht.It can be advantageous, as shown in FIG. 4, if the valve sections 6 pass through a common valve actuator 13 can be 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 throughput of Exhaust gas recirculation channel 3 controls, as shown in Fig. 4, the valve sections 6 can be equipped with the simplest on-off valves.

    Schließlich kann, wie in Fig. 3 dargestellt, eine Ausführungsform gewählt werden, bei der die Ventilabschnitte 11 in 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. Hierdurch ist der Aufwand an Ventilstellgliedern reduziert. Finally, as shown in Fig. 3, an embodiment can be selected at which the valve sections 11 consist of a double seat valve 15, which is a connection controls between the exhaust gas recirculation channel 3 and two intermediate channels 16, 17, wherein the intermediate channels 16, 17 are each connected to the individual channels 7, 9, which in the Air intake ducts 9, 10 open with the same vibration behavior. This reduces the effort required for valve actuators.

    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, less than the prior art Exhaust gas composition containing pollutants reached, the proportion of the recycled Exhaust gas in the combustion air can thus be increased to the limit because the Safety distance to the cylinders with the highest or lowest exhaust gas supply can be reduced. The valve sections 6 can be any with plate, slide or Roller valves can be equipped, as valve actuators come 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 vibration behavior the air in the individual air intake ducts is not disturbed.

    Claims (6)

    Luftansaugkanalsystem für eine Brennkraftmaschine, mit einzelnen zu jedem Zylinder einer Brennkraftmaschine führenden Luftansaugkanälen und mit einem integrierten Abgasrückführkanal, dessen Abgasdurchsatz steuerbar ist und der über Einzelkanäle in jeden der einzelnen Luftansaugkanäle einmündet, dadurch gekennzeichnet, daß jeder Einzelkanal (15) gegenüber dem Luftansaugkanal (2), in den er einmündet, in Betriebsphasen ohne Abgasrückführung durch einen Ventilabschnitt (6) verschließbar ist.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 flow rate of which can be controlled and which opens into each of the individual air intake ducts via individual ducts, characterized in that each individual duct (15) is opposite the air intake duct (2) , into which it opens, can be closed in operating phases without exhaust gas recirculation by a valve section (6). Luftansaugkanalsystem nach dem Oberbegriff des Anspruchs 1, dadurch gekennzeichnet, 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.Air intake duct system according to the preamble of claim 1, characterized in that individual ducts (7) which open into air intake ducts (8) with the same vibration behavior compared to individual ducts (9) which open into air intake ducts (10) with another same vibration behavior, in operating phases without Exhaust gas recirculation are separated by a valve section (11). Luftansaugkanalsystem nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Ventilabschnitte (6, 11) durch jeweils ein separates Ventilstellglied (12) gesteuert werden, das auf Steuersignale anspricht.Air intake duct system according to claim 1 or 2, characterized in that the valve sections (6, 11) are each controlled by a separate valve actuator (12) which responds to control signals. Luftansaugkanalsystem nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Ventilabschnitte (6, 11) durch ein gemeinsames Ventilstellglied (13) gesteuert werden, das auf Steuersignale anspricht.Air intake duct system according to claim 1 or 2, characterized in that the valve sections (6, 11) are controlled by a common valve actuator (13) which responds to control signals. Luftansaugkanalsystem nach Anspruch 3 oder 4, dadurch gekennzeichnet, daß ein Abgasrückführventil (14) den Durchsatz des Abgasrückführkanals (3) steuert. Air intake duct system according to claim 3 or 4, characterized in that an exhaust gas recirculation valve (14) controls the throughput of the exhaust gas recirculation duct (3). Luftansaugkanalsystem nach Anspruch 4, dadurch gekennzeichnet, daß der Ventilabschnitt (11) in einem Doppelsitzventil (15) besteht, 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.Air intake duct system according to claim 4, characterized 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), the intermediate ducts (16, 17) in each case are connected to the individual channels (7, 9) which open into the air intake channels (9, 10) with the same vibration behavior.
    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 true EP0949414A2 (en) 1999-10-13
    EP0949414A3 EP0949414A3 (en) 2000-03-22
    EP0949414B1 EP0949414B1 (en) 2005-09-28

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    ID=7864335

    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

    Country Status (2)

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

    Cited By (1)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    WO2000042311A1 (en) * 1999-01-11 2000-07-20 Siemens Aktiengesellschaft Exhaust-gas recirculation system for a multicylindered internal combustion engine

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    DE19847288B4 (en) * 1998-10-14 2014-12-11 Pierburg Gmbh Exhaust gas recirculation valve for an internal combustion 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

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    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

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    Cited By (1)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    WO2000042311A1 (en) * 1999-01-11 2000-07-20 Siemens Aktiengesellschaft Exhaust-gas recirculation system for a multicylindered internal combustion engine

    Also Published As

    Publication number Publication date
    DE59813081D1 (en) 2005-11-03
    EP0949414A3 (en) 2000-03-22
    DE19816266A1 (en) 1999-10-14
    EP0949414B1 (en) 2005-09-28

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