DE102005049462A1 - Modern internal combustion engine, has exhaust gas return path for refeeding exhaust gas to intake side of engine, where part of exhaust gas return path is integrated in control housing cover of engine - Google Patents

Modern internal combustion engine, has exhaust gas return path for refeeding exhaust gas to intake side of engine, where part of exhaust gas return path is integrated in control housing cover of engine Download PDF

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Publication number
DE102005049462A1
DE102005049462A1 DE102005049462A DE102005049462A DE102005049462A1 DE 102005049462 A1 DE102005049462 A1 DE 102005049462A1 DE 102005049462 A DE102005049462 A DE 102005049462A DE 102005049462 A DE102005049462 A DE 102005049462A DE 102005049462 A1 DE102005049462 A1 DE 102005049462A1
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DE
Germany
Prior art keywords
exhaust gas
internal combustion
engine
gas return
combustion engine
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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.)
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Application number
DE102005049462A
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German (de)
Inventor
Jürgen Dipl.-Ing. Huter
Bernhard Dipl.-Ing.(FH) Jutz
Janusz Dipl.-Ing. Kwiatkowski
Christoph Dipl.-Ing. Müller
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.)
Mercedes Benz Group AG
Original Assignee
DaimlerChrysler AG
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Application filed by DaimlerChrysler AG filed Critical DaimlerChrysler AG
Priority to DE102005049462A priority Critical patent/DE102005049462A1/en
Publication of DE102005049462A1 publication Critical patent/DE102005049462A1/en
Withdrawn legal-status Critical Current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
    • F02M26/41—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
    • F02M26/22—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
    • F02M26/11—Manufacture or assembly of EGR systems; Materials or coatings specially adapted for EGR systems

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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)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)

Abstract

The engine (10) has an exhaust gas return path (18) for refeeding exhaust gas to an intake side of the engine. A part of the exhaust gas return path is integrated in a control housing cover (16) of the engine. A coolant chamber is integrated in the housing cover, where the coolant chamber stays in thermal contact with the exhaust gas return path. The housing cover and the exhaust gas return path are formed as an integral cast part.

Description

Die Erfindung betrifft eine Brennkraftmaschine mit Abgasrückführung nach dem Oberbegriff des Anspruchs 1.The The invention relates to an internal combustion engine with exhaust gas recirculation the preamble of claim 1.

Die Rückführung von Abgas in den Ansaugtrakt einer Brennkraftmaschine zur Reduzierung von Schadstoffemissionen ist allgemein bekannt. Für eine solche Abgasrückführung werden verschiedene Abgasleitungen und Kühleinrichtungen benötigt, für die bei modernen Brennkraftmaschinen häufig nicht genug Bauraum zur Verfügung steht.The Repatriation of Exhaust gas in the intake tract of an internal combustion engine for reduction Pollutant emissions are well known. For such Be exhaust gas recirculation various exhaust pipes and cooling equipment needed for the modern internal combustion engines frequently not enough space available stands.

Es ist daher zum Beispiel aus der DE 196 42 685 A1 bekannt, eine Abgasrückleitung in einer Trennebene zwischen Zylinderkopf und Kurbelgehäuse in der Nähe von Kühlmittelräumen vorzusehen.It is therefore for example from the DE 196 42 685 A1 known to provide an exhaust gas return line in a parting plane between the cylinder head and crankcase in the vicinity of coolant spaces.

Die EP 1 063 411 B1 offenbart eine Brennkraftmaschine, bei welcher die Abgasrückleitung in den Zylinderkopf integriert ist, wobei die Abgasrückleitung einen Kühlmittelraum des Zylinderkopfes durchdringt.The EP 1 063 411 B1 discloses an internal combustion engine in which the exhaust gas return line is integrated into the cylinder head, wherein the exhaust gas return line penetrates a coolant space of the cylinder head.

Weiter beschreibt die EP 1 134 403 B1 die Möglichkeit, die Abgasrückleitung einer Brennkraftmaschine teilweise in die Zylinderkopfhaube zu integrieren.Next describes the EP 1 134 403 B1 the ability to partially integrate the exhaust gas recirculation of an internal combustion engine in the cylinder head cover.

Ausgehend von dem vorgenannten Stand der Technik ist es eine Aufgabe der vorliegenden Erfindung eine Brennkraftmaschine mit Abgasrückführung vorzusehen, die einen kompakten Aufbau ermöglicht. In einer Weiterbildung soll auch eine Kühlung bzw. Vorkühlung des Abgasstroms in kompakter Weise möglich sein.outgoing It is an object of the present invention from the aforementioned prior art Invention to provide an internal combustion engine with exhaust gas recirculation, a allows compact construction. In a further development, a cooling or pre-cooling of the Exhaust gas flow in a compact manner possible be.

Diese Aufgabe wird durch eine Brennkraftmaschine mit den Merkmalen des Anspruchs 1 gelöst. Vorteilhafte Weiterbildungen und Ausgestaltungen der Erfindung sind Gegenstand der abhängigen Ansprüche.These Task is by an internal combustion engine with the characteristics of Claim 1 solved. Advantageous developments and refinements of the invention are Subject of the dependent claims.

Die erfindungsgemäße Brennkraftmaschine weist eine Abgasrückleitung zur Rückführung des Abgases zur Ansaugseite der Brennkraftmaschine auf, wobei wenigstens ein Teil der Abgasrückleitung in einem Steuergehäusedeckel der Brennkraftmaschine integriert ist.The inventive internal combustion engine has an exhaust gas return line for the return of the exhaust gas to the intake side of the internal combustion engine, wherein at least one Part of the exhaust gas return line in a timing case cover the internal combustion engine is integrated.

Die Abgasrückleitung kann so bauraumsparend und kostengünstig in den Steuergehäusedeckel integriert werden. Ausfallträchtige und schwer zugängliche Schnittstellen von Rohrleitungen für das Abgas und ein Kühlmittel können auf diese Weise vermieden werden.The Exhaust gas recirculation line Can be so space-saving and inexpensive integrated into the timing case cover become. failure Pregnant and hard to reach Interfaces of pipes for the exhaust gas and a coolant can avoided in this way.

Vorzugsweise ist in dem Steuergehäusedeckel auch ein Kühlmittelraum integriert, der mit der Abgasrückleitung in thermischem Kontakt steht. Auf diese Weise erfolgt eine Kühlung bzw. Vorkühlung des Abgasrückstroms in dem Steuergehäusedeckel, sodass ein separater AGR-Kühler kleinerer Kapazität benutzt oder auf einen separaten AGR-Kühler ganz verzichtet werden kann.Preferably is in the timing case cover also a coolant room integrated, with the exhaust gas return is in thermal contact. In this way, a cooling or Pre-cooling of the EGR flow in the timing case cover so that a separate EGR cooler smaller capacity used or on a separate EGR cooler can be dispensed with completely.

In einer Ausgestaltung der Erfindung sind der Steuergehäusedeckel und die Abgasrückleitung in kostengünstiger Weise als ein integrales Gussteil ausgebildet. Vorzugsweise ist der Steuergehäusedeckel zumindest im Bereich der Abgasrückleitung hier zur Reduzierung der Oberflächentemperatur außenseitig mit einer thermischen Isolierung versehen, insbesondere beschichtet.In An embodiment of the invention, the control housing cover and the exhaust gas return in a cost effective manner formed as an integral casting. Preferably, the timing cover is at least in the area of exhaust gas recirculation here to reduce the surface temperature externally provided with a thermal insulation, in particular coated.

Obige sowie weitere Merkmale und Vorteile der Erfindung werden aus der nachfolgenden Beschreibung eines bevorzugten, nicht-einschränkenden Ausführungsbeispiels der Erfindung unter Bezugnahme auf die beiliegenden Zeichnungen besser verständlich. Darin zeigen:Above and other features and advantages of the invention will become apparent from the following description of a preferred, non-limiting embodiment of the invention with reference to the accompanying drawings better understandable. Show:

1 eine Teilperspektivansicht einer Brennkraftmaschine mit Abgasrückführung gemäß einem Ausführungsbeispiel der Erfindung; und 1 a partial perspective view of an internal combustion engine with exhaust gas recirculation according to an embodiment of the invention; and

2 eine aufgeschnittene Teilperspektivansicht einer Innenseite eines Steuergehäusedeckels der Brennkraftmaschine von 1. 2 a cut-away partial perspective view of an inner side of a control housing cover of the internal combustion engine of 1 ,

In 1 ist ein Teil einer Brennkraftmaschine 10 perspektivisch dargestellt. Die Brennkraftmaschine 10 umfasst in üblicher Weise einen Zylinderkopf 12 und eine Zylinderkopfhaube 14. An einer Seite der Brennkraftmaschine 10 ist ein Steuergehäusedeckel 16 angebracht, der je nach Bauform der Brennkraftmaschine 10 bzw. des Steuergehäuses manchmal auch als Kettenkastendeckel bezeichnet wird.In 1 is a part of an internal combustion engine 10 shown in perspective. The internal combustion engine 10 includes in the usual way a cylinder head 12 and a cylinder head cover 14 , On one side of the internal combustion engine 10 is a timing case cover 16 attached, depending on the design of the internal combustion engine 10 or the control housing is sometimes referred to as a chain box lid.

Wie insbesondere aus 2 ersichtlich, ist in diesen Steuergehäusedeckel 16 ein Teil einer Abgasrückleitung 18 integriert, wobei das Steuergehäuseteil 16 vorzugsweise als ein integrales Gussteil zum Beispiel aus Aluminium oder einer Aluminiumlegierung ausgebildet ist. Die Abgasrückleitung 18 führt dabei durch einen Kühlmittelraum 24 des Steuergehäuse deckels 16. Dieser Kühlmittelraum 24 ist über einen Kühlmittelanschluss 22 mit einer Kühlmittelleitung 20 verbunden und ferner mit einem Kühlmittelkanal (nicht dargestellt) des Zylinderkopfes 12 verbunden.As in particular from 2 It can be seen in this timing case cover 16 a part of an exhaust gas return line 18 integrated, with the control housing part 16 is preferably formed as an integral casting, for example made of aluminum or an aluminum alloy. The exhaust gas return line 18 leads through a coolant space 24 the control housing cover 16 , This coolant space 24 is via a coolant connection 22 with a coolant line 20 connected and further with a coolant channel (not shown) of the cylinder head 12 connected.

Neben dem Kühlmittelraum 24 definiert der Steuergehäusedeckel 16 auch einen Schmiermittelraum 26. Außerdem ist der Steuergehäusedeckel 16 mit einer ersten Dichtfläche 28 zum Zylinderkopf 12 und einer zweiten Dichtfläche 30 zur Zylinderkopfhaube 14 versehen.Beside the coolant room 24 defines the Timing cover 16 also a lubricant room 26 , In addition, the timing cover is 16 with a first sealing surface 28 to the cylinder head 12 and a second sealing surface 30 to the cylinder head cover 14 Mistake.

Die Brennkraftmaschine 10 ist einschließlich der Abgasrückführung kompakt aufgebaut. Ausfallträchtige und schwer zugängliche Schnittstellen von Abgas und Kühlmittel werden vermieden oder zumindest in nur geringerer Anzahl benötigt, wodurch die Brennkraftmaschine auch kostengünstiger zu fertigen, zu montieren und zu warten ist.The internal combustion engine 10 is compact, including the exhaust gas recirculation. Failure-prone and hard-to-reach interfaces of exhaust gas and coolant are avoided or at least required in only a smaller number, whereby the internal combustion engine is also less expensive to manufacture, assemble and maintain.

Durch den ebenfalls in den Steuergehäusedeckel 16 integrierten Kühlmittelraum 24, der mit der Abgasrückleitung 18 in thermischem Kontakt steht, wird eine effektive Kühlung bzw. Vorkühlung der rückgeleiteten Abgase bewirkt, sodass auf einen separaten AGR-Kühler verzichtet werden kann oder dieser zumindest mit einer kleineren Kühlkapazität konzipiert werden kann.Through the also in the timing case cover 16 integrated coolant space 24 that with the exhaust gas return 18 is in thermal contact, effective cooling or pre-cooling of the recirculated exhaust gases is effected, so that can be dispensed with a separate EGR cooler or this can be designed at least with a smaller cooling capacity.

Die Außenseite des Steuergehäusedeckels 16 ist zumindest im Bereich der Abgasrückleitung 18 bevorzugt thermisch isolierend beschichtet, um so die Oberflächentemperatur des Steuergehäusedeckels 16 zu reduzieren.The outside of the timing case cover 16 is at least in the field of exhaust gas recirculation 18 preferably coated thermally insulating, so as the surface temperature of the timing cover 16 to reduce.

Auf die Darstellung und die Beschreibung weiterer Komponenten des Abgasrückführsystems, wie die Anschlüsse der Abgasrückleitung 18 an den Abgastrakt und den Ansaugtrakt der Brenn kraftmaschine, Filtereinsätze in der Abgasrückleitung 18, den separaten AGR-Kühler, ein AGR-ventil zum Steuern der Abgasströmungsmenge durch die Abgasrückleitung, eine Frischluftzufuhr und/oder eine Sekundärluftzufuhr und dergleichen, wurde verzichtet, da sie dem Fachmann wohlbekannt sind und die erfindungsgemäße Brennkraftmaschine unabhängig von ihnen angewendet werden kann.On the presentation and description of other components of the exhaust gas recirculation system, such as the connections of the exhaust gas return line 18 to the exhaust system and the intake tract of the internal combustion engine, filter cartridges in the exhaust gas return line 18 , the separate EGR cooler, an EGR valve for controlling the exhaust gas flow amount through the exhaust gas recirculation, a fresh air supply and / or a secondary air supply and the like have been omitted since they are well known to those skilled in the art and the internal combustion engine according to the invention can be applied independently of them.

Claims (5)

Brennkraftmaschine (10), mit einer Abgasrückleitung (18) zur Rückführung des Abgases zur Ansaugseite der Brennkraftmaschine, dadurch gekennzeichnet, dass wenigstens ein Teil der Abgasrückleitung (18) in einem Steuergehäusedeckel (16) der Brennkraftmaschine (10) integriert ist.Internal combustion engine ( 10 ), with an exhaust gas return line ( 18 ) for the return of the exhaust gas to the intake side of the internal combustion engine, characterized in that at least a part of the exhaust gas return line ( 18 ) in a control housing cover ( 16 ) of the internal combustion engine ( 10 ) is integrated. Brennkraftmaschine nach Anspruch 1, dadurch gekennzeichnet, dass in dem Steuergehäusedeckel (16) auch ein Kühlmittelraum (24) integriert ist, der mit der Abgasrückleitung (18) in thermischem Kontakt steht.Internal combustion engine according to claim 1, characterized in that in the control housing cover ( 16 ) also a coolant space ( 24 ) integrated with the exhaust gas return line ( 18 ) is in thermal contact. Brennkraftmaschine nach Anspruch 2, dadurch gekennzeichnet, dass der in dem Steuergehäusedeckel (16) integrierte Kühlmittelraum (24) über einen Kühlmittelanschluss (22) mit einer Kühlmittelleitung (20) verbunden ist.Internal combustion engine according to claim 2, characterized in that in the control housing cover ( 16 ) integrated coolant space ( 24 ) via a coolant connection ( 22 ) with a coolant line ( 20 ) connected is. Brennkraftmaschine nach einem der vorherigen Ansprüche, dadurch gekennzeichnet, dass der Steuergehäusedeckel (16) und die Abgasrückleitung (18) als integrales Gussteil ausgebildet sind.Internal combustion engine according to one of the preceding claims, characterized in that the control housing cover ( 16 ) and the exhaust gas return line ( 18 ) are formed as an integral casting. Brennkraftmaschine nach einem der vorherigen Ansprüche, dadurch gekennzeichnet, dass der Steuergehäusedeckel (16) zumindest im Bereich der Abgasrückleitung (18) zur Reduzierung der Oberflächentemperatur außenseitig mit einer thermischen Isolierung versehen ist.Internal combustion engine according to one of the preceding claims, characterized in that the control housing cover ( 16 ) at least in the region of the exhaust gas return line ( 18 ) is provided on the outside with a thermal insulation to reduce the surface temperature.
DE102005049462A 2005-10-15 2005-10-15 Modern internal combustion engine, has exhaust gas return path for refeeding exhaust gas to intake side of engine, where part of exhaust gas return path is integrated in control housing cover of engine Withdrawn DE102005049462A1 (en)

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DE102005049462A DE102005049462A1 (en) 2005-10-15 2005-10-15 Modern internal combustion engine, has exhaust gas return path for refeeding exhaust gas to intake side of engine, where part of exhaust gas return path is integrated in control housing cover of engine

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3505747A1 (en) * 2017-12-28 2019-07-03 Kubota Corporation Engine with egr device
FR3080409A1 (en) * 2018-04-23 2019-10-25 Renault S.A.S INTERNAL COMBUSTION ENGINE WITH CLOSURE PLATE OF A DISTRIBUTION PANEL
EP4253751A1 (en) * 2022-03-31 2023-10-04 Suzuki Motor Corporation Egr device for internal combustion engine

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4435555C1 (en) * 1994-10-05 1996-03-14 Porsche Ag Multi-cylinder internal combustion engine

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4435555C1 (en) * 1994-10-05 1996-03-14 Porsche Ag Multi-cylinder internal combustion engine

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3505747A1 (en) * 2017-12-28 2019-07-03 Kubota Corporation Engine with egr device
US20190203669A1 (en) * 2017-12-28 2019-07-04 Kubota Corporation Engine with egr device
CN109973259A (en) * 2017-12-28 2019-07-05 株式会社久保田 Engine with EGR
US11078872B2 (en) 2017-12-28 2021-08-03 Kubota Corporation Engine with EGR device
CN109973259B (en) * 2017-12-28 2022-03-01 株式会社久保田 Engine with EGR
FR3080409A1 (en) * 2018-04-23 2019-10-25 Renault S.A.S INTERNAL COMBUSTION ENGINE WITH CLOSURE PLATE OF A DISTRIBUTION PANEL
EP3561282A1 (en) * 2018-04-23 2019-10-30 RENAULT s.a.s. Internal combustion engine with plate for closing a distribution surface
EP4253751A1 (en) * 2022-03-31 2023-10-04 Suzuki Motor Corporation Egr device for internal combustion engine

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Owner name: DAIMLER AG, 70327 STUTTGART, DE

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Effective date: 20121016