DE10018503A1 - Exhaust gas recirculation unit for internal combustion engine has cooling system with casing with at least two flow passages so that at least a double flow of gas recirculation to check valves is ensured - Google Patents

Exhaust gas recirculation unit for internal combustion engine has cooling system with casing with at least two flow passages so that at least a double flow of gas recirculation to check valves is ensured

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Publication number
DE10018503A1
DE10018503A1 DE10018503A DE10018503A DE10018503A1 DE 10018503 A1 DE10018503 A1 DE 10018503A1 DE 10018503 A DE10018503 A DE 10018503A DE 10018503 A DE10018503 A DE 10018503A DE 10018503 A1 DE10018503 A1 DE 10018503A1
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DE
Germany
Prior art keywords
exhaust gas
gas recirculation
check valves
combustion engine
internal combustion
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.)
Ceased
Application number
DE10018503A
Other languages
German (de)
Inventor
Michael Benra
Peter Haushaelter
Rolf Lappan
Stefan Mikliss
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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
Priority to DE10018503A priority Critical patent/DE10018503A1/en
Publication of DE10018503A1 publication Critical patent/DE10018503A1/en
Ceased legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/02—Header boxes; End plates
    • F28F9/0202—Header boxes having their inner space divided by partitions
    • 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
    • F02M26/02—EGR systems specially adapted for supercharged engines
    • F02M26/04—EGR systems specially adapted for supercharged engines with a single turbocharger
    • F02M26/05—High pressure loops, i.e. wherein recirculated exhaust gas is taken out from the exhaust system upstream of the turbine and reintroduced into the intake system downstream of the compressor
    • 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
    • F02M26/23—Layout, e.g. schematics
    • F02M26/25—Layout, e.g. schematics with coolers having bypasses
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/02—Header boxes; End plates
    • F28F9/026—Header boxes; End plates with static flow control means, e.g. with means for uniformly distributing heat exchange media into conduits
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B29/00—Engines characterised by provision for charging or scavenging not provided for in groups F02B25/00, F02B27/00 or F02B33/00 - F02B39/00; Details thereof
    • F02B29/04—Cooling of air intake supply
    • F02B29/0406—Layout of the intake air cooling or coolant circuit
    • 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
    • F02M26/23—Layout, e.g. schematics
    • F02M26/24—Layout, e.g. schematics with two or more coolers
    • 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
    • F02M26/23—Layout, e.g. schematics
    • F02M26/28—Layout, e.g. schematics with 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
    • F02M26/38—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories with two or more EGR valves disposed in parallel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
    • F02M26/40—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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2265/00—Safety or protection arrangements; Arrangements for preventing malfunction
    • F28F2265/26—Safety or protection arrangements; Arrangements for preventing malfunction for allowing differential expansion between elements

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Exhaust-Gas Circulating Devices (AREA)

Abstract

The exhaust gas recirculation unit has a cooling system(12) which has a casing(13) with at least two flow passages in such a way that at least a double flow of gas recirculation to the check valves(14) in the line is ensured. The exhaust gas flow passages are formed by cooling fin arrangement which has a diffuser section, whereby the flow passages in the diffusor region are formed by a separating rib. The cooling fin arrangement has an intermediate flange element.

Description

Die Erfindung betrifft eine Abgasrückführeinrichtung für eine Brennkraftmaschine mit zumindest zwei Abgasrückführleitungen, die von entsprechenden Abgasleitungen der Brennkraftmaschine abzweigen und getrennt oder zusammengeführt in eine Ladeluftleitung einmünden, wobei in Strömungsrichtung gesehen ein Kühlsystem, zumindest zwei Rückschlagventile und zumindest ein Abgasrückführventil angeordnet sind.The invention relates to an exhaust gas recirculation device for an internal combustion engine with at least two exhaust gas recirculation lines that are of the appropriate type Branch off exhaust pipes of the internal combustion engine and separate or join together in a charge air line, in the direction of flow seen a cooling system, at least two check valves and at least one Exhaust gas recirculation valve are arranged.

Derartige Abgasrückführeinrichtungen sind hinlänglich bekannt. Dabei werden diese Abgasrückführeinrichtungen mehrflutig, zumindest zweiflutig ausgeführt um die Abgaspulsationen durch die Rückschlagventile zur Abgasrückführ-Förderung zu nutzen. Würde eine derartige Einrichtung lediglich einflutig ausgeführt werden, würden sich die Pulsationen der einzelnen Abgaspulse gegenseitig beeinflussen, so daß dieser Effekt nicht mehr genutzt werden könnte. Aus diesem Grund ist auch zu gewährleisten, daß das Abgas der unterschiedlichen Abgasleitungen bis hin zu den Rückschlagventilen getrennt geführt wird, d. h. das es auch im Kühlsystem nicht vermischt wird. Die derzeitigen Kühlsysteme sind dementsprechend so ausgeführt, daß für jede Abgasrückführleitung ein Kühlgehäuse vorgesehen ist. Es sollte deutlich sein, daß dies einen erhöhten Montage- und Kostenaufwand bedeutet.Such exhaust gas recirculation devices are well known. In doing so these exhaust gas recirculation devices are designed to be multi-flow, at least double-flow the exhaust gas pulsations through the check valves for exhaust gas recirculation to use. If such a facility were to be implemented only the pulsations of the individual exhaust gas pulses would influence each other, so that this effect could no longer be used. For this reason also to ensure that the exhaust of the different exhaust pipes up is routed separately to the check valves, d. H. that it is also in Cooling system is not mixed. The current cooling systems are accordingly designed so that for each exhaust gas recirculation line Cooling housing is provided. It should be clear that this is an heightened one Assembly and cost means.

Daher liegt der Erfindung die Aufgabe zugrunde, eine Abgasrückführeinrichtung für eine Brennkraftmaschine zu schaffen, die die oben genannten Nachteile vermeidet. The invention is therefore based on the object of an exhaust gas recirculation device for an internal combustion engine to create the disadvantages mentioned above avoids.  

Diese Aufgabe wird bei einer gattungsgemäßen Abgasrückführeinrichtung dadurch gelöst, daß das Kühlsystem ein Gehäuse mit zumindest zwei Abgasströmungskanälen aufweist, derart, daß eine zumindest zweiflutige Abgasrückführung bis zu den Rückschlagventilen gewährleistet ist. Auf diese Weise kann ein Kühlgehäuse für mehrere Abgasrückführleitungen eingesetzt werden. Dabei hat es sich als besonders vorteilhaft erwiesen, daß die Abgasströmungskanäle im wesentlichen durch eine Kühlrippenanordnung gebildet sind. Dabei kann der Kühlrippenanordnung ein Diffusorbereich vorgestaltet sein, wobei die Abgasströmungskanäle im Diffusorbereich durch einen Trennsteg gebildet sind. Auch kann der Kühlrippenanordnung ein Zwischenflanschelement nachgeordnet sein, der einen strömungsgünstigen Übergang zwischen dem Kühlbereich und den Rückschlagventilen schafft.This task is performed in a generic exhaust gas recirculation device solved in that the cooling system has a housing with at least two Has exhaust gas flow channels, such that an at least double flow Exhaust gas recirculation up to the check valves is guaranteed. To this A cooling housing can be used for several exhaust gas recirculation lines become. It has proven to be particularly advantageous that the Exhaust gas flow channels essentially formed by a cooling fin arrangement are. A diffuser area can be pre-configured for the cooling fin arrangement, the exhaust gas flow channels in the diffuser area through a separator are formed. The cooling fin arrangement can also have an intermediate flange element be subordinate to a fluid transition between the Cooling area and the check valves creates.

Um eine Längenausdehnung aufgrund der thermischen Belastung der Kühlrippenanordnung auszugleichen, können sowohl stromaufwärts als stromabwärts der Kühlrippenanordnung Längenausgleichsmittel vorgesehen sein. Dabei können die Längenausgleichsmittel aus einem Ausgleichsspalt oder auch aus einem federbelasteten Gleitschuhelement oder Elastomerdichtung bestehen.To a linear expansion due to the thermal load of the Balancing cooling fins can be both upstream and downstream Length compensation means may be provided downstream of the cooling fin arrangement. The length compensation means can be from a compensation gap or consist of a spring-loaded sliding shoe element or elastomer seal.

Ausführungsbeispiele der Erfindung sind dargestellt und werden nachfolgend beschrieben.Embodiments of the invention are shown and are described below described.

Die Zeichnung zeigtThe drawing shows

Fig. 1 eine schematische Darstellung einer Abgasrückführeinrichtung für eine Brennkraftmaschine, Fig. 1 is a schematic representation of an exhaust gas recirculation device for an internal combustion engine,

Fig. 2 eine Schnittdarstellung des Kühlsystems, Fig. 2 is a sectional view of the cooling system,

Fig. 3 eine alternative Ausführungsform eines Längenausgleichsmittels zwischen Diffusor und Kühlbereich und Fig. 3 shows an alternative embodiment of a length compensation means between the diffuser and cooling area and

Fig. 4 eine alternative Ausführungsform eines Längenausgleichsmittels zwischen Kühlbereich und Zwischenflanschelement. Fig. 4 shows an alternative embodiment of a length compensation means between the cooling area and the intermediate flange element.

Fig. 1 zeigt die erfindungsgemäße Abgasrückführeinrichtung 1 für eine Brennkraftmaschine 2. Von der Brennkraftmaschine 2 zweigen Abgasrückführleitungen 3, 4 ab, die Abgas über eine Turbine 5 nach außen leiten. Durch die Turbine 5 wird ein Verdichter 6 angetrieben der Umgebungsluft verdichtet und einer Ladeluftleitung 7, die einen Ladeluftkühler 8 aufweist, zuführt. Die Ladeluftleitung 7 führt dann zur Ladeluftverteilerleiste 9 der Brennkraftmaschine. Fig. 1 shows the exhaust gas recirculation device 1 according to the invention for an internal combustion engine 2. Exhaust gas recirculation lines 3 , 4 branch off from the internal combustion engine 2 and conduct exhaust gas to the outside via a turbine 5 . The turbine 5 drives a compressor 6, compresses the ambient air and supplies it to a charge air line 7 , which has a charge air cooler 8 . The charge air line 7 then leads to the charge air distributor 9 of the internal combustion engine.

Von den Abgasleitungen 3, 4 zweigen Abgasrückführleitungen 10, 11 ab. Das Abgas wird über ein Kühlsystem 12 mit einem Gehäuse 13 zu den Rückschlagventilen 14 geführt und von dort zu einem Abgasrückführventil 15 geleitet, das die der Brennkraftmaschine zuzuführende Menge Abgas regelt. Im vorliegenden Fall werden die Abgasrückführleitungen 10, 11 nach den Rückschlagventilen 14 zu einer Abgasrückführleitung 16 zusammengeführt. Durch die mehrflutige Auslegung der Abgasrückführeinrichtung 1 wird der Effekt der Abgaspulsation zur Öffnung der Rückschlagventile 14 ausgenutzt.Exhaust gas recirculation lines 10 , 11 branch off from the exhaust gas lines 3 , 4 . The exhaust gas is led via a cooling system 12 with a housing 13 to the check valves 14 and from there to an exhaust gas recirculation valve 15 which regulates the amount of exhaust gas to be fed to the internal combustion engine. In the present case, the exhaust gas recirculation lines 10 , 11 are brought together to form an exhaust gas recirculation line 16 after the check valves 14 . Due to the multi-flow design of the exhaust gas recirculation device 1 , the effect of the exhaust gas pulsation is used to open the check valves 14 .

Fig. 2 zeigt das Kühlsystem 12 mit einem Gehäuse 13 mit den angeflanschten Rückschlagventilen 14 in einer Schnittansicht. Über Einlaßöffnungen 17, 18 ist das Kühlsystem mit den Abgasleitungen 10, 11 verbunden. Zunächst gelangt das Abgas in einen Diffusorbereich 19 der durch einen Trennsteg 20 Abgasströmungskanäle 21, 22 bildet. Durch den Diffusorbereich 19 sollen die Abgasströme möglichst gleichmäßig auf einen Kühlbereich 23 verteilt werden. Fig. 2 shows the cooling system 12 with a housing 13 with the flanged check valves 14 in a sectional view. The cooling system is connected to the exhaust pipes 10 , 11 via inlet openings 17 , 18 . First, the exhaust gas reaches a diffuser area 19 which forms exhaust gas flow channels 21 , 22 through a separating web 20 . The exhaust gas flows are to be distributed as evenly as possible over a cooling area 23 through the diffuser area 19 .

Die Abgaskanäle 21, 22 werden im Kühlbereich 23 durch eine Kühlrippenanordnung 24 noch weiter unterteilt, wodurch der Kühlvorgang auf bekannte Weise effizienter abläuft. An den Kühlbereich 23 schließt sich ein Zwischenflanschelement 25 an mit einem Trennstück 26, das die strömungstechnische Trennung der Abgasströmungskanäle 21, 22 bis zu den Rückschlagventilen 14 gewährleistet. Durch das Zwischenflanschelement 25 wird ein besonders vorteilhafter strömungstechnischer Übergang des Abgases vom Kühlbereich 23 zu den Rückschlagventilen 14 gewährleistet. Die Rückschlagventile 14 werden durch die jeweilige Abgaspulsation in den Strömungskanälen 21, 22 geöffnet und führen das Abgas wechselseitig der Abgasrückführleitung 16 zu.The exhaust gas channels 21 , 22 are further subdivided in the cooling area 23 by a cooling fin arrangement 24 , as a result of which the cooling process proceeds more efficiently in a known manner. An intermediate flange element 25 adjoins the cooling area 23 with a separating piece 26 , which ensures the fluidic separation of the exhaust gas flow channels 21 , 22 up to the check valves 14 . The intermediate flange element 25 ensures a particularly advantageous fluidic transition of the exhaust gas from the cooling area 23 to the check valves 14 . The check valves 14 are opened by the respective exhaust gas pulsation in the flow channels 21 , 22 and alternately feed the exhaust gas to the exhaust gas recirculation line 16 .

Da die Kühlrippenanordnung 24 bei dem hohen Temperaturunterschied zwischen Umgebungstemperatur und Abgastemperatur einer temperaturabhängigen Längenausdehnung unterliegen, ist jeweils zwischen Diffusor- und Kühlbereich und zwischen Kühlbereich und Zwischenflanschelement ein Längenausgleichsmittel vorgesehen. Gemäß Fig. 2 ist zwischen Diffusorbereich 19 und Kühlbereich 23 ein Ausgleichsspalt 27 vorgesehen und zwischen Kühlbereich 23 und Zwischenflanschelement 25 eine Elastomerdichtung 28.Since the cooling fin arrangement 24 is subject to a temperature-dependent linear expansion given the high temperature difference between the ambient temperature and the exhaust gas temperature, a length compensation means is provided between the diffuser and cooling regions and between the cooling region and the intermediate flange element. According to Fig. 2 between the diffuser region 19 and cooling region 23 is provided a compensation gap 27 and between the cooling area 23 and 25 Zwischenflanschelement an elastomeric seal 28.

Gemäß Fig. 3 und Fig. 4 kann als alternatives Längenausgleichsmittel an beiden Stellen auch ein federbelastetes Gleitschuhelement 29 eingesetzt werden.According to FIG. 3 and FIG. 4, a spring-loaded sliding shoe element 29 can also be used as an alternative length compensation means.

Es sollte deutlich sein, daß anstatt eines nach den Rückschlagventilen 14 angeordneten Abgasrückführventils 15 natürlich auch zwei Abgasrückführventile vor dem Kühlsystem 12 angeordnet sein können.It should be clear that, instead of one exhaust gas recirculation valve 15 arranged after the check valves 14 , two exhaust gas recirculation valves can of course also be arranged upstream of the cooling system 12 .

Claims (7)

1. Abgasrückführeinrichtung für eine Brennkraftmaschine mit zumindest zwei Abgasrückführleitungen, die von entsprechenden Abgasleitungen der Brennkraftmaschine abzweigen und getrennt oder zusammengeführt in eine Ladeluftleitung einmünden, wobei in Strömungsrichtung gesehen ein Kühlsystem, zumindest zwei Rückschlagventile und zumindest ein Abgasrückführventil angeordnet sind, dadurch gekennzeichnet, daß das Kühlsystem (12) ein Gehäuse (13) mit zumindest zwei Abgasströmungskanälen (21, 22) aufweist, derart, daß eine zumindest zweiflutige Abgasrückführung bis zu den Rückschlagventilen (14) gewährleistet ist.1.Exhaust gas recirculation device for an internal combustion engine with at least two exhaust gas recirculation lines that branch off from corresponding exhaust gas lines of the internal combustion engine and open separately or merged into a charge air line, with a cooling system, at least two check valves and at least one exhaust gas recirculation valve being arranged in the flow direction, characterized in that the cooling system ( 12 ) has a housing ( 13 ) with at least two exhaust gas flow channels ( 21 , 22 ) in such a way that an at least double-flow exhaust gas recirculation up to the check valves ( 14 ) is ensured. 2. Abgasrückführeinrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Abgasströmungskanäle (21, 22) im wesentlichen durch eine Kühlrippenanordnung (24) gebildet sind.2. Exhaust gas recirculation device according to claim 1, characterized in that the exhaust gas flow channels ( 21 , 22 ) are essentially formed by a cooling fin arrangement ( 24 ). 3. Abgasrückführeinrichtung nach Anspruch der 2, dadurch gekennzeichnet, daß der Kühlrippenanordnung (24) ein Diffusorbereich (19) vorgestaltet ist, wobei die Abgasströmungskanäle (21, 22) im Diffusorbereich (19) durch einen Trennsteg (20) gebildet sind.3. Exhaust gas recirculation device according to claim 2, characterized in that the cooling fin arrangement ( 24 ) is designed a diffuser area ( 19 ), the exhaust gas flow channels ( 21 , 22 ) in the diffuser area ( 19 ) being formed by a separating web ( 20 ). 4. Abgasrückführeinrichtung nach Anspruch der 2 oder 3, dadurch gekennzeichnet, daß der Kühlrippenanordnung (24) ein Zwischenflanschelement (25) nachgeordnet ist. 4. Exhaust gas recirculation device according to claim 2 or 3, characterized in that the cooling fin arrangement ( 24 ) is followed by an intermediate flange element ( 25 ). 5. Abgasrückführeinrichtung nach einem der Ansprüche 2 bis 4, dadurch gekennzeichnet, daß sowohl stromaufwärts als auch stromabwärts der Kühlrippenanordnung Längenausgleichsmittel (27, 28, 29) vorgesehen sind.5. Exhaust gas recirculation device according to one of claims 2 to 4, characterized in that length compensation means ( 27 , 28 , 29 ) are provided both upstream and downstream of the cooling fin arrangement. 6. Abgasrückführeinrichtung nach Anspruch 5, dadurch gekennzeichnet, daß die Längenausgleichsmittel aus einem Ausgleichsspalt (27) bestehen.6. Exhaust gas recirculation device according to claim 5, characterized in that the length compensation means consist of a compensation gap ( 27 ). 7. Abgasrückführeinrichtung nach Anspruch 5, dadurch gekennzeichnet, daß die Längenausgleichsmittel aus einem federbelasteten Gleitschuhelement (29) oder Elastomerdichtung (28) bestehen.7. Exhaust gas recirculation device according to claim 5, characterized in that the length compensation means consist of a spring-loaded sliding shoe element ( 29 ) or elastomer seal ( 28 ).
DE10018503A 2000-04-14 2000-04-14 Exhaust gas recirculation unit for internal combustion engine has cooling system with casing with at least two flow passages so that at least a double flow of gas recirculation to check valves is ensured Ceased DE10018503A1 (en)

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DE10018503A DE10018503A1 (en) 2000-04-14 2000-04-14 Exhaust gas recirculation unit for internal combustion engine has cooling system with casing with at least two flow passages so that at least a double flow of gas recirculation to check valves is ensured

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1355058A2 (en) * 2002-04-15 2003-10-22 Benteler Automobiltechnik GmbH Exhaust gas recirculation cooler for an internal combustion engine
WO2004031552A3 (en) * 2002-09-28 2004-05-27 Daimler Chrysler Ag Internal combustion engine comprising an exhaust gas turbocharger and an exhaust gas recirculation device
WO2010037540A1 (en) * 2008-10-02 2010-04-08 Deutz Aktiengesellschaft Two-stage cooled exhaust gas recirculation system
DE102010054644A1 (en) 2010-12-15 2012-06-21 Pierburg Gmbh Exhaust gas recirculation device for reducing pollutants during operation of internal combustion engine, has coolant cladding formed between inner and outer housings, and exhaust non-return valves directly fixed on heat exchanger housing
AT511604B1 (en) * 2011-10-06 2013-01-15 Avl List Gmbh INTERNAL COMBUSTION ENGINE WITH AN INTAKE TRAIN
DE102015011241A1 (en) * 2015-08-27 2017-03-02 Audi Ag Heat exchanger for a cooling circuit
DE102017220347A1 (en) 2017-11-15 2019-05-16 Mahle International Gmbh Exhaust gas recirculation cooler
CN109973261A (en) * 2019-03-29 2019-07-05 潍柴动力股份有限公司 Cooler for recycled exhaust gas, cooler for recycled exhaust gas control system and its control method

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1355058A2 (en) * 2002-04-15 2003-10-22 Benteler Automobiltechnik GmbH Exhaust gas recirculation cooler for an internal combustion engine
EP1355058A3 (en) * 2002-04-15 2006-06-21 Benteler Automobiltechnik GmbH Exhaust gas recirculation cooler for an internal combustion engine
WO2004031552A3 (en) * 2002-09-28 2004-05-27 Daimler Chrysler Ag Internal combustion engine comprising an exhaust gas turbocharger and an exhaust gas recirculation device
WO2010037540A1 (en) * 2008-10-02 2010-04-08 Deutz Aktiengesellschaft Two-stage cooled exhaust gas recirculation system
US8991369B2 (en) 2008-10-02 2015-03-31 Deutz Aktiengesellschaft Two-stage cooled exhaust gas recirculation system
DE102010054644A1 (en) 2010-12-15 2012-06-21 Pierburg Gmbh Exhaust gas recirculation device for reducing pollutants during operation of internal combustion engine, has coolant cladding formed between inner and outer housings, and exhaust non-return valves directly fixed on heat exchanger housing
AT511604A4 (en) * 2011-10-06 2013-01-15 Avl List Gmbh INTERNAL COMBUSTION ENGINE WITH AN INTAKE TRAIN
AT511604B1 (en) * 2011-10-06 2013-01-15 Avl List Gmbh INTERNAL COMBUSTION ENGINE WITH AN INTAKE TRAIN
DE102015011241A1 (en) * 2015-08-27 2017-03-02 Audi Ag Heat exchanger for a cooling circuit
DE102015011241B4 (en) 2015-08-27 2023-11-02 Audi Ag Heat exchanger for a cooling circuit
DE102017220347A1 (en) 2017-11-15 2019-05-16 Mahle International Gmbh Exhaust gas recirculation cooler
US10900445B2 (en) 2017-11-15 2021-01-26 Mahle International Gmbh Exhaust gas recirculation cooler
CN109973261A (en) * 2019-03-29 2019-07-05 潍柴动力股份有限公司 Cooler for recycled exhaust gas, cooler for recycled exhaust gas control system and its control method

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