DE19816266A1 - Air intake duct system for an internal combustion engine - Google Patents
Air intake duct system for an internal combustion engineInfo
- Publication number
- DE19816266A1 DE19816266A1 DE19816266A DE19816266A DE19816266A1 DE 19816266 A1 DE19816266 A1 DE 19816266A1 DE 19816266 A DE19816266 A DE 19816266A DE 19816266 A DE19816266 A DE 19816266A DE 19816266 A1 DE19816266 A1 DE 19816266A1
- Authority
- DE
- Germany
- Prior art keywords
- air intake
- exhaust gas
- gas recirculation
- intake duct
- individual
- 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- Withdrawn
Links
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
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
Ein bekanntes Luftansaugkanalsystem mit Abgasrückführung weist den Nachteil eines gestörten Schwingverhaltens der angesaugten Luft auf, wodurch die Zylinderfüllung vermindert wird. DOLLAR A Hiergegen sieht das neue Luftansaugkanalsystem vor, daß jeder Einzelkanal (5) gegenüber dem Luftansaugkanal (2), in den er einmündet, in Betriebsphasen ohne Abgasrückführung durch einen Ventilabschnitt (6) verschließbar ist. DOLLAR A Hierdurch kann der Abgasanteil für eine Schadstoffreduzierung bis in Grenzbereiche erhöht werden, ohne daß das Schwingverhalten der angesaugten Luft gestört wird.A known air intake duct system with exhaust gas recirculation has the disadvantage of a disturbed vibration behavior of the intake air, as a result of which the cylinder charge is reduced. DOLLAR A Against this, the new air intake duct system provides that each individual duct (5) with respect to the air intake duct (2) into which it flows can be closed in operating phases without exhaust gas recirculation by a valve section (6). DOLLAR A In this way, the proportion of exhaust gas for reducing pollutants can be increased to the limit without disturbing the vibration behavior of the intake air.
Description
Die Erfindung betrifft ein Luftansaugkanalsystem für eine Brennkraftmaschine, mit ei nem 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 egg nem 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 unglei chen Abgasverteilung auf die einzelnen Zylinder der Brennkraftmaschine einige mit Luftmangel betrieben werden, wodurch die Abgaszusammensetzung insgesamt ver schlechtert 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 added, so that at an uneven Chen exhaust gas distribution to the individual cylinders of the internal combustion engine with some Air shortages are operated, whereby the total exhaust gas composition ver gets worse.
Bei einer zentralen Einleitung der Abgasrückführung zwischen Luftfilter und Saugrohr sammler 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 Vo lumen 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 füh ren, 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 with collectors 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 Vo lumen 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 can lead to this ren 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 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. 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 Schwingver halten 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 oscillating ver keep the intake air 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:The drawing shows:
Fig. 1 ein Prinzipbild eines Luftansaugkanalsystems des Standes der Technik, Fig. 1 is a schematic diagram of an air intake duct system of the prior art,
Fig. 2, 3 und 4 erfinderische Ausführungen des Luftansaugkanalsystems nach Fig. 1. Fig. 2, 3 and 4, inventive embodiments of the air intake duct system of 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, des sen Abgasdurchsatz, hier von einem Abgasrückführventil 4, steuerbar ist. Der Abgas rückführkanal 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 air intake ducts 2 leading to each cylinder of an internal combustion engine and with an integrated exhaust gas recirculation duct 3 , the exhaust gas flow rate of which, 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 . 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 ein mündet, in Betriebsphasen ohne Abgasrückführung durch einen Ventilabschnitt 6 ver schließbar ist, bzw. bei einer Ausführung nach Fig. 3, daß Einzelkanäle 7, die in Luftan saugkanäle 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 it is now provided in an embodiment of an air intake duct system according to FIG. 2 that each individual duct 5 can be closed in relation to the air intake duct 2 into which it opens, in operating phases without exhaust gas recirculation through a valve section 6 , or in an embodiment according to FIG. 3 that individual channels 7 , which open into Luftan suction channels 8 with the same vibration behavior, compared to individual channels 9 , which open into air intake channels 10 with another same vibration behavior, are separated in operating phases without exhaust gas recirculation by a valve section 11 .
Diese Maßnahmen verhindern das Durchschlagen des Ansaugdruckes des Luftansaug kanals 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 2 , 8 , 10 from penetrating into one of the other via the individual ducts 5 , 7 , 9 .
Es ist vorteilhaft, wenn die Ventilabschnitte 6 durch jeweils ein separates Ventilstellglied 12 gesteuert werden (Figur), das auf Steuersignale anspricht, wobei die Ventilabschnitte 6 gleichzeitig geöffnet und dabei auf den gewünschten Abgasdurchsatz eingestellt wer den.It is advantageous if the valve sections 6 are each controlled by a separate valve actuator 12 (figure) which responds to control signals, the valve sections 6 being opened simultaneously and being set to the desired exhaust gas flow rate.
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 are controlled by a common valve actuator 13 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 Ventilabschnit te 6 mit einfachsten Auf-Zu-Ventilen ausgestattet werden.The measure that additionally an exhaust gas recirculation valve 14 controls the throughput of the exhaust gas recirculation channel 3 , as shown in Fig. 4, the Ventilabschnit te 6 can be equipped with the simplest open-close 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.Finally, as shown in FIG. 3, an embodiment can be selected in which the valve sections 11 consist 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 each with the Individual channels 7 , 9 are connected, which open into the air intake channels 9 , 10 with the same vibration behavior.
Hierdurch ist der Aufwand an Ventilstellgliedern reduziert. 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 rückgeführ ten 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 in Frage.By the invention, an improved compared to the prior art, lower pollutant exhaust gas composition is achieved, the proportion of the recirculated 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 equipped as desired with plate, slide or roller valves; electrical or pneumatic valve actuators can be used.
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)
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19816266A DE19816266A1 (en) | 1998-04-11 | 1998-04-11 | Air intake duct system for an internal combustion engine |
DE59813081T DE59813081D1 (en) | 1998-04-11 | 1998-12-18 | Air intake duct system for an internal combustion engine |
EP98124115A EP0949414B1 (en) | 1998-04-11 | 1998-12-18 | Air intake system for a combustion engine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19816266A DE19816266A1 (en) | 1998-04-11 | 1998-04-11 | Air intake duct system for an internal combustion engine |
Publications (1)
Publication Number | Publication Date |
---|---|
DE19816266A1 true DE19816266A1 (en) | 1999-10-14 |
Family
ID=7864335
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19816266A Withdrawn DE19816266A1 (en) | 1998-04-11 | 1998-04-11 | Air intake duct system for an internal combustion engine |
DE59813081T Expired - Lifetime DE59813081D1 (en) | 1998-04-11 | 1998-12-18 | Air intake duct system for an internal combustion engine |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE59813081T Expired - Lifetime DE59813081D1 (en) | 1998-04-11 | 1998-12-18 | Air intake duct system for an internal combustion engine |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP0949414B1 (en) |
DE (2) | DE19816266A1 (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1138926A2 (en) | 2000-03-27 | 2001-10-04 | Pierburg Aktiengesellschaft | System of air intake conduits for a combustion engine |
DE10017204A1 (en) * | 2000-04-06 | 2001-10-18 | Audi Ag | Air feed system for multicylinder internal combustion engine has first, second branches for delivering fresh, used air to individual cylinders with mutually corresponding channel lengths |
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 |
DE19847288B4 (en) * | 1998-10-14 | 2014-12-11 | Pierburg Gmbh | Exhaust gas recirculation valve for an internal combustion engine |
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 |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19900640C1 (en) * | 1999-01-11 | 2000-05-18 | Siemens Ag | Exhaust gas feedback device for multi-cylinder IC engine |
Family Cites Families (5)
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 |
-
1998
- 1998-04-11 DE DE19816266A patent/DE19816266A1/en not_active Withdrawn
- 1998-12-18 DE DE59813081T patent/DE59813081D1/en not_active Expired - Lifetime
- 1998-12-18 EP EP98124115A patent/EP0949414B1/en not_active Expired - Lifetime
Cited By (9)
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 |
EP1138926A2 (en) | 2000-03-27 | 2001-10-04 | Pierburg Aktiengesellschaft | System of air intake conduits for a combustion engine |
EP1138926A3 (en) * | 2000-03-27 | 2002-07-17 | Pierburg Aktiengesellschaft | System of air intake conduits for a combustion engine |
DE10017204A1 (en) * | 2000-04-06 | 2001-10-18 | Audi Ag | Air feed system for multicylinder internal combustion engine has first, second branches for delivering fresh, used air to individual cylinders with mutually corresponding channel lengths |
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 |
Also Published As
Publication number | Publication date |
---|---|
DE59813081D1 (en) | 2005-11-03 |
EP0949414A2 (en) | 1999-10-13 |
EP0949414B1 (en) | 2005-09-28 |
EP0949414A3 (en) | 2000-03-22 |
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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 | ||
8130 | Withdrawal |