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EP1063411B1 - Exhaust gas recirculation duct for an internal combustion engine - Google Patents

Exhaust gas recirculation duct for an internal combustion engine Download PDF

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Publication number
EP1063411B1
EP1063411B1 EP00102592A EP00102592A EP1063411B1 EP 1063411 B1 EP1063411 B1 EP 1063411B1 EP 00102592 A EP00102592 A EP 00102592A EP 00102592 A EP00102592 A EP 00102592A EP 1063411 B1 EP1063411 B1 EP 1063411B1
Authority
EP
European Patent Office
Prior art keywords
exhaust
gas recirculation
recirculation line
exhaust gas
combustion engine
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
EP00102592A
Other languages
German (de)
French (fr)
Other versions
EP1063411A3 (en
EP1063411A2 (en
Inventor
Heribert Dipl.-Ing. Möller
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.)
MAN Truck and Bus SE
Original Assignee
MAN Nutzfahrzeuge AG
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 MAN Nutzfahrzeuge AG filed Critical MAN Nutzfahrzeuge AG
Publication of EP1063411A2 publication Critical patent/EP1063411A2/en
Publication of EP1063411A3 publication Critical patent/EP1063411A3/en
Application granted granted Critical
Publication of EP1063411B1 publication Critical patent/EP1063411B1/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
    • F02M26/52—Systems for actuating EGR valves
    • F02M26/59—Systems for actuating EGR valves using positive pressure actuators; Check valves therefor
    • 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
    • F02M26/22—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories with coolers in the recirculation passage
    • F02M26/29—Constructional details of the coolers, e.g. pipes, plates, ribs, insulation or materials
    • F02M26/30—Connections of coolers to other devices, e.g. to valves, heaters, compressors or filters; Coolers characterised by their location on the engine
    • 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
    • F02M26/22—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories with coolers in the recirculation passage
    • F02M26/29—Constructional details of the coolers, e.g. pipes, plates, ribs, insulation or materials
    • F02M26/32—Liquid-cooled heat exchangers
    • 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
    • F02M26/41—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories characterised by the arrangement of the recirculation passage in relation to the engine, e.g. to cylinder heads, liners, spark plugs or manifolds; characterised by the arrangement of the recirculation passage in relation to specially adapted combustion chambers
    • 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
    • F02M26/40—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories with timing means in the recirculation passage, e.g. cyclically operating valves or regenerators; with arrangements involving pressure pulsations

Definitions

  • the invention relates to an exhaust gas recirculation line for internal combustion engines according to the preamble of claim 1.
  • an exhaust gas recirculation line which is the exhaust gas line transversely to the longitudinal axis of the internal combustion engine in front of one of the front cylinder heads connects to the charge air line.
  • FIG. 1 shows a top view of a cylinder head 1 with an exhaust gas recirculation system.
  • the exhaust gas recirculation system essentially consists of an exhaust pipe 2, a Check valve 3, an exhaust gas cooler 4 and a charge air line, not shown here educated.
  • the exhaust gas to be returned passes through coming from the exhaust line 2 initially a butterfly valve 5, then flows through the exhaust gas recirculation line 6 and passes through the check valve 3 when pressure peaks occur, and the exhaust gas cooler 4 into the charge air pipe.
  • the exhaust gas is now from the exhaust pipe 2 to the exhaust gas cooler 4 by a Exhaust gas recirculation line 6 led into one of the end faces of the cylinder head 1 in such a way is integrated that it is guided through the cooling water chamber 7.
  • a line is saved, which is on the front of the Cylinder head 1 would take up additional space: The line would be in their Radiate considerable heat to the environment when installing in a vehicle Risk of fire and should be isolated.
  • Another advantage of the invention Arrangement is that by installation in the cooling water chamber 7 a noticeable pre-cooling of the exhaust gas is achieved, so that the actual exhaust gas cooler 4 can be dimensioned smaller.
  • the cooling effect of the exhaust gas recirculation line 6 can be increased further by that it has exhaust fins cooling fins, which the exhaust gas recirculation line 6 in the longitudinal weighting pull through and the together with the cylinder head 1 in casting technique can be performed.
  • the check valve 3 is a flap valve formed, which opens when 6 exhaust pressure peaks via the exhaust gas recirculation line meet a tongue 8 in the direction indicated by the arrow.
  • the check valve 3 can advantageously be a structural unit with a seal 10 form which is arranged between the cylinder head 1 (Fig. 1) and the exhaust gas cooler 4 is.
  • the deflection of the tongue 8 can be limited by a stop 9 in turn forms part of the seal 10.
  • the exhaust gas flows after passing the tongue 8 in the exhaust gas cooler designed as a tube bundle heat exchanger 4 and after cooling in the charge air line.
  • FIG. 3 A section III-III through the front end of the cylinder head 1 is shown in FIG. 3.
  • the exhaust gas recirculation line 6 is embodied in two channels here.
  • the two exhaust gas recirculation lines 6a, 6b penetrate the cooling water chamber 7.
  • the exhaust gas is already here pre-cooled. A heat radiation to the environment is completely impossible, isolation is therefore not necessary.
  • a butterfly valve 5 (Fig. 1) is provided, which by the actuator 5a can be actuated.

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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)

Description

Die Erfindung bezieht sich auf eine Abgasrückführleitung für Brennkraftmaschinen gemäß dem Gattungsbegriff des Patentanspruches 1.The invention relates to an exhaust gas recirculation line for internal combustion engines according to the preamble of claim 1.

Um Teile des Abgases von der Abgasleitung in die Ladeluftleitung zurückzuführen ist es üblich, eine Abgasrückführleitung vorzusehen, welche die Abgasleitung quer zur Längsachse der Brennkraftmaschine vor einem der stirnseitigen Zylinderköpfe mit der Ladeluftleitung verbindet. Eine derartige Lösung hat den Nachteil, dass an einer der Stirnseiten der Brennkraftmaschine zusätzlicher Bauraum beansprucht ist. Ferner muss die Abgasrückführleitung zur Vermeidung von Überhitzung benachbarter Bauteile isoliert oder abgeschirmt werden. Dies erfordert einen erheblichen baulichen und kostenmäßigen Aufwand.To return parts of the exhaust gas from the exhaust pipe to the charge air pipe it is common to provide an exhaust gas recirculation line which is the exhaust gas line transversely to the longitudinal axis of the internal combustion engine in front of one of the front cylinder heads connects to the charge air line. Such a solution has the Disadvantage that additional space on one of the end faces of the internal combustion engine is claimed. Furthermore, the exhaust gas recirculation line must be avoided be isolated or shielded from overheating of neighboring components. This requires a considerable amount of construction and costs.

In Verbindung mit Abgasrückführanordnungen bei nicht aufgeladenen Motoren ist es beispielsweise aus der JP 63 018 169 A bekannt, den Auslasskanal eines Zylinders innerhalb des Zylinderkopfes mit einer Abgasrückführleitung zu verbinden, wobei durch entsprechende Kühlkanäle Vorsorge getroffen ist, dass sich der Zylinderkopf nicht unzulässig erwärmt. In connection with exhaust gas recirculation systems with engines not charged it is known, for example, from JP 63 018 169 A, the outlet duct To connect cylinders within the cylinder head to an exhaust gas recirculation line, provision is made by appropriate cooling channels that the cylinder head does not heat up excessively.

Weiter ist aus dem Beitrag XP 000 497 900/MT2 April 1995 ) eine Anordnung zur Abgasrückführung bekannt, die ebenfalls bei einem nicht aufgeladenen Motor den Auslasskanal eines Zylinders innerhalb des Zylinderkopfes mit einer Abgasrückführleitung verbindet, wobei die Abgasrückführleitung durch den Zylinderkopf auf die Einlassseite des Motors führt.There is also an order from entry XP 000 497 900 / MT2 April 1995) known for exhaust gas recirculation, which also with an uncharged engine the exhaust port of a cylinder within the cylinder head with an exhaust gas recirculation line connects, with the exhaust gas recirculation line through the cylinder head leads to the intake side of the engine.

Aus der DE 43 19 380 A ist es schließlich bekannt, bei aufgeladenen Brennkraftmaschinen einen Teilstrom des Abgases unter Zwischenschaltung eines Abgasrückführsteuerventils, eines Kühlers und eines daran anschließenden Rückschlagventils in den Ansaugtrakt der Brennkraftmaschine stromab zu Turbolader und Ladeluftkühler zurückzuführen.Finally, it is known from DE 43 19 380 A for supercharged internal combustion engines a partial flow of the exhaust gas with the interposition of an exhaust gas recirculation control valve, a cooler and a check valve connected to it in the intake tract of the internal combustion engine downstream of the turbocharger and intercooler.

Ausgehend von diesem Stand der Technik ist es Aufgabe der Erfindung bei einer aufgeladenen Brennkraftmaschine eine raumsparende Lösung für eine gekühlte Abgasrückführleitung zu finden.Based on this prior art, it is an object of the invention in a supercharged internal combustion engine a space-saving solution for a cooled Find exhaust gas recirculation line.

Erfindungsgemäß wird diese Aufgabe durch die kennzeichnenden Merkmale des Patentanspruches 1 gelöst.According to the invention, this object is achieved by the characterizing features of Claim 1 solved.

Durch die Integration der Abgasrückführleitung in den Zylinderkopf wird baulicher Mehraufwand eingespart, Wärmeabstrahlung gänzlich unterbunden und zugleich eine Vorkühlung des rückzuführenden Abgases erreicht.The integration of the exhaust gas recirculation line in the cylinder head makes it more structural Additional effort saved, heat radiation completely prevented and at the same time a pre-cooling of the exhaust gas to be recirculated is achieved.

Eine vorteilhafte Weiterbildung der Erfindung ist Anspruch 2 zu entnehmen.An advantageous development of the invention can be found in claim 2.

Durch die Integration der Absperrklappe in die Abgasrückführleitung wird eine raumsparende Anordnung erzielt.By integrating the butterfly valve in the exhaust gas recirculation line, a space-saving arrangement achieved.

Weitere vorteilhafte Ausbildungen der Abgasrückführleitung können den Ansprüchen 3 bis 6 entnommen werden.Further advantageous designs of the exhaust gas recirculation line can meet the claims 3 to 6 are removed.

Ein Ausführungsbeispiel der erfindungsgemäßen Abgasrückführleitung ist an Hand von Zeichnungen dargestellt. Es zeigt:

Fig. 1
eine Draufsicht auf einen Zylinderkopf mit stirnseitig in den Zylinderkopf integrierter Abgasrückführleitung
Fig. 2
ein Detail aus Fig. 1 mit Rückschlagventil
Fig. 3
einen Schnitt III-III am stirnseitigen Ende des Zylinderkopfes mit Abgasrückführleitungen
An embodiment of the exhaust gas recirculation line according to the invention is shown with reference to drawings. It shows:
Fig. 1
a plan view of a cylinder head with the exhaust gas recirculation line integrated into the end of the cylinder head
Fig. 2
a detail from Fig. 1 with check valve
Fig. 3
a section III-III at the front end of the cylinder head with exhaust gas recirculation lines

Figur 1 stellt einen Zylinderkopf 1 mit Abgasrückführsystem in der Draufsicht dar. Das Abgasrückführsystem wird im wesentlichen aus einer Abgasleitung 2, einem Rückschlagventil 3, einem Abgaskühler 4 und einer hier nicht dargestellten Ladeluftleitung gebildet. Das rückzuführende Abgas durchläuft von der Abgasleitung 2 kommend zunächst eine Absperrklappe 5, strömt anschließend durch die Abgasrückführleitung 6 und gelangt bei auftretenden Druckspitzen über das Rückschlagventil 3, und den Abgaskühler 4 in das Ladeluftrohr.FIG. 1 shows a top view of a cylinder head 1 with an exhaust gas recirculation system. The exhaust gas recirculation system essentially consists of an exhaust pipe 2, a Check valve 3, an exhaust gas cooler 4 and a charge air line, not shown here educated. The exhaust gas to be returned passes through coming from the exhaust line 2 initially a butterfly valve 5, then flows through the exhaust gas recirculation line 6 and passes through the check valve 3 when pressure peaks occur, and the exhaust gas cooler 4 into the charge air pipe.

Erfindungsgemäß wird nun das Abgas vom Abgasrohr 2 zum Abgaskühler 4 durch eine Abgasrückführleitung 6 geführt, die in eine der Stirnseiten des Zylinderkopfes 1 derart integriert ist, daß sie durch den Kühlwasserraum 7 geführt wird. Eine derartige Lösung hat mehrere Vorteile. Zunächst wird eine Leitung eingespart, die an der Stirnseite des Zylinderkopfes 1 zusätzlichen Bauraum beanspruchen würde: Die Leitung würde in ihre Umgebung beträchtliche Wärme abstrahlen, die beim Einbau in ein Fahrzeug zu Brandgefahr führt und isoliert werden müßte. Ein weiterer Vorteil der erfindungsgemäßen Anordnung besteht darin, daß durch den Einbau in den Kühlwasserraum 7 eine spürbare Vorkühlung des Abgases erreicht wird, so daß der eigentliche Abgaskühler 4 kleiner dimensioniert werden kann. According to the invention, the exhaust gas is now from the exhaust pipe 2 to the exhaust gas cooler 4 by a Exhaust gas recirculation line 6 led into one of the end faces of the cylinder head 1 in such a way is integrated that it is guided through the cooling water chamber 7. Such a solution has several advantages. First, a line is saved, which is on the front of the Cylinder head 1 would take up additional space: The line would be in their Radiate considerable heat to the environment when installing in a vehicle Risk of fire and should be isolated. Another advantage of the invention Arrangement is that by installation in the cooling water chamber 7 a noticeable pre-cooling of the exhaust gas is achieved, so that the actual exhaust gas cooler 4 can be dimensioned smaller.

Die Kühlwirkung der Abgasrückführleitung 6 kann noch dadurch gesteigert werden, daß sie abgasseitige Kühlrippen aufweist, welche die Abgasrückführleitung 6 in Längswichtung durchziehen und die zusammen mit dem Zylinderkopf 1 in Gießtechnik aus geführt werden können.The cooling effect of the exhaust gas recirculation line 6 can be increased further by that it has exhaust fins cooling fins, which the exhaust gas recirculation line 6 in the longitudinal weighting pull through and the together with the cylinder head 1 in casting technique can be performed.

Eine weitere Möglichkeit der Verbesserung der Kühlwirkung kann erreicht werden, wenn man in die Abgasrückführleitung 6 einen Rohrbündelwärmetauscher integriert, der in seiner Bauweise dem Abgaskühler 4 entspricht. Vorteilhafterweise wird auch die Absperrklappe 5 in den Zylinderkopf 1 und die Abgasrückführleitung 6 integriert. Mit der Absperrklappe 5 kann die Abgasrückführung unterbunden, oder zusätzlich mengenmäßig geregelt werden.Another way of improving the cooling effect can be achieved if a tube bundle heat exchanger is integrated into the exhaust gas recirculation line 6, which corresponds in its construction to the exhaust gas cooler 4. Advantageously, too the butterfly valve 5 is integrated in the cylinder head 1 and the exhaust gas recirculation line 6. With the butterfly valve 5, the exhaust gas recirculation can be prevented, or in addition be regulated in terms of quantity.

Ein Detail aus Figur 1 ist in Figur 2 gezeigt. Das Rückschlagventil 3 ist als ein Flatterventil ausgebildet, welches öffnet, wenn über die Abgasrückführleitung 6 Abgasdruckspitzen in der durch Pfeil angedeuteten Richtung auf eine Zunge 8 treffen. Das Rückschlagventil 3 kann vorteilhafterweise eine bauliche Einheit mit einer Dichtung 10 bilden, welche zwischen Zylinderkopf 1 ( Fig. 1) und dem Abgaskühler 4 angeordnet ist. Der Ausschlag der Zunge 8 kann durch einen Anschlag 9 begrenzt werden, der wiederum einen Bestandteil der Dichtung 10 bildet. Das Abgas strömt nach Passieren der Zunge 8 in den als Rohrbündelwärmetauscher ausgebildeten Abgaskühler 4 und nach erfolgter Kühlung in die Ladeluftleitung.A detail from FIG. 1 is shown in FIG. The check valve 3 is a flap valve formed, which opens when 6 exhaust pressure peaks via the exhaust gas recirculation line meet a tongue 8 in the direction indicated by the arrow. The check valve 3 can advantageously be a structural unit with a seal 10 form which is arranged between the cylinder head 1 (Fig. 1) and the exhaust gas cooler 4 is. The deflection of the tongue 8 can be limited by a stop 9 in turn forms part of the seal 10. The exhaust gas flows after passing the tongue 8 in the exhaust gas cooler designed as a tube bundle heat exchanger 4 and after cooling in the charge air line.

Einen Schnitt III-III durchs stirnseitige Ende des Zylinderkopfes 1 stellt Figur 3 dar. Die Abgasrückführleitung 6 ist hier zweiflutig ausgeführt. Die beiden Abgasrückführleitungen 6a, 6b durchdringen den Kühlwasserraum 7. Das Abgas wird hier bereits vorgekühlt. Eine Wärmeabstrahlung an die Umgebung ist vollkommen ausgeschlossen, eine Isolierung ist somit nicht notwendig. Zum Absperren der Abgasrückführleitungen 6a, 6b ist eine Absperrklappe 5 (Fig. 1) vorgesehen, welche durch den Stelltrieb 5a betätigbar ist.A section III-III through the front end of the cylinder head 1 is shown in FIG. 3. The exhaust gas recirculation line 6 is embodied in two channels here. The two exhaust gas recirculation lines 6a, 6b penetrate the cooling water chamber 7. The exhaust gas is already here pre-cooled. A heat radiation to the environment is completely impossible, isolation is therefore not necessary. To shut off the exhaust gas recirculation lines 6a, 6b, a butterfly valve 5 (Fig. 1) is provided, which by the actuator 5a can be actuated.

Claims (6)

  1. A supercharged internal-combustion engine with an exhaust-gas recirculation line, which connects an exhaust-gas pipe to a charge-air line with the interposition of an exhaust-gas cooler (4) and in which a shut-off valve (5) as well as a non-return valve (3) to the exhaust-gas recirculation are provided, characterized in that the exhaust-gas recirculation takes place starting from the exhaust-gas pipe (2) back into the cylinder head (1), wherein the exhaust-gas recirculation line (6) is incorporated in the cylinder head (1) on the end face of the internal-combustion engine in such a way that the exhaust-gas recirculation line (6) passes through a cooling-water chamber (7) of the cylinder head (1) transversely to its longitudinal direction.
  2. A supercharged internal-combustion engine with an exhaust-gas recirculation line according to Claim 1, characterized in that a shut-off valve (5) is fitted in the end of the exhaust-gas recirculation line (6) facing the exhaust-gas line (2).
  3. A supercharged internal-combustion engine with an exhaust-gas recirculation line according to Claims 1, 2, characterized in that a non-return valve (3) opening in the direction of the exhaust-gas cooler (4) is provided in a transition region from the exhaust-gas recirculation line (6) to the exhaust-gas cooler (4).
  4. A supercharged internal-combustion engine with an exhaust-gas recirculation line according to Claim 1, characterized in that a tubular heat exchanger is incorporated in the exhaust-gas recirculation line (6).
  5. A supercharged internal-combustion engine with an exhaust-gas recirculation line according to Claim 1, characterized in that the exhaust-gas recirculation line (6) comprises cooling ribs extending in the longitudinal direction on the exhaust-gas side and produced by a casting process.
  6. A supercharged internal-combustion engine with an exhaust-gas recirculation line according to Claim 3, characterized in that the non-return valve (3) is a component of a seal (10) between the cylinder head (1) and the exhaust-gas cooler (4), wherein the movement of the tongue (8) is limited by a stop (9) which in turn forms a structural unit with the seal (10).
EP00102592A 1999-06-26 2000-02-08 Exhaust gas recirculation duct for an internal combustion engine Expired - Lifetime EP1063411B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19929449 1999-06-26
DE19929449A DE19929449A1 (en) 1999-06-26 1999-06-26 Exhaust gas recirculation line for internal combustion engines

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EP1063411A2 EP1063411A2 (en) 2000-12-27
EP1063411A3 EP1063411A3 (en) 2001-07-11
EP1063411B1 true EP1063411B1 (en) 2004-09-08

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Families Citing this family (8)

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Publication number Priority date Publication date Assignee Title
DE10119484B4 (en) * 2001-04-20 2018-01-04 Bayerische Motoren Werke Aktiengesellschaft Liquid-cooled internal combustion engine with an exhaust gas recirculation system
NZ531314A (en) * 2004-02-23 2006-10-27 Shuttleworth Axial Motor Compa Recirculation system for motor
FR2906574B1 (en) * 2006-09-29 2010-09-17 Peugeot Citroen Automobiles Sa DEVICE FOR RECIRCULATING THE EXHAUST GAS OF AN INTERNAL COMBUSTION ENGINE AND INTERNAL COMBUSTION ENGINE EQUIPPED WITH SUCH A DEVICE
EP2063097A1 (en) * 2007-11-21 2009-05-27 Perkins Engines Company Limited Internal combustion engine having exhaust gas cooling in cooling jacket
FR2935436B1 (en) * 2008-08-29 2010-09-17 Peugeot Citroen Automobiles Sa RECIRCULATION LOOP OF EXHAUST GAS.
FR2944061B1 (en) * 2009-04-07 2011-04-01 Renault Sas EXHAUST SYSTEM OF A MOTOR VEHICLE.
FR3005997B1 (en) * 2013-05-22 2015-06-19 Peugeot Citroen Automobiles Sa MOTOR VEHICLE ENGINE WITH EXHAUST GAS RECIRCULATION WITH IMPROVED COOLING
US9664153B2 (en) * 2015-03-13 2017-05-30 Ford Global Technologies, Llc Engine with exhaust gas recirculation

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DE19929449A1 (en) 2000-12-28
EP1063411A3 (en) 2001-07-11
DE50007662D1 (en) 2004-10-14
EP1063411A2 (en) 2000-12-27

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