EP0857869B2 - Structure for supporting the exhaust gas recirculation conduit on the engine - Google Patents

Structure for supporting the exhaust gas recirculation conduit on the engine Download PDF

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Publication number
EP0857869B2
EP0857869B2 EP97121920A EP97121920A EP0857869B2 EP 0857869 B2 EP0857869 B2 EP 0857869B2 EP 97121920 A EP97121920 A EP 97121920A EP 97121920 A EP97121920 A EP 97121920A EP 0857869 B2 EP0857869 B2 EP 0857869B2
Authority
EP
European Patent Office
Prior art keywords
gas recirculation
exhaust
internal combustion
combustion engine
recirculation line
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
EP97121920A
Other languages
German (de)
French (fr)
Other versions
EP0857869A1 (en
EP0857869B1 (en
Inventor
Josef Astner
Reinhard Krösche
Karl-Heinz Metzger
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
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
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Application filed by DaimlerChrysler AG filed Critical DaimlerChrysler AG
Publication of EP0857869A1 publication Critical patent/EP0857869A1/en
Application granted granted Critical
Publication of EP0857869B1 publication Critical patent/EP0857869B1/en
Publication of EP0857869B2 publication Critical patent/EP0857869B2/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
    • F02M26/12—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems characterised by means for attaching parts of an EGR system to each other or to engine parts
    • 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

Definitions

  • the invention relates to a holder an exhaust gas recirculation line on the motor housing a Internal combustion engine according to the preamble of the claim 1.
  • the invention is based on the object to create compact mount, which at optimal Use of the available space easily and inexpensively can be produced, and a time and cost-saving Assembly possible.
  • An advantage of the holder according to the invention lies in the fact that by the integration of the support in one Part of the exhaust gas recirculation line the bracket in a very compact Construction can be produced.
  • the saving of a separate support also allows for simultaneous Weight reduction a reduction in manufacturing costs the bracket as well as a reduction of the assembly work.
  • the component is not only as mentioned above the holder of the exhaust gas recirculation line on the motor housing the internal combustion engine, but in addition the Support of the mixing housing and the suction module.
  • the component axially extending Reinforcing ribs on the on the component counteract acting forces.
  • the exhaust gas recirculation line 1 is formed in two parts and comprises a first conduit part 5, which by means of a pipe clamp 6 sealingly with a second conduit part 7 is connected.
  • the first line part 5 of Exhaust gas recirculation line 1 branches from a near-engine Exhaust pipe 8 from, in a collecting space 9 of an exhaust manifold 10 opens, which via exhaust pipes 11 at an outlet side 3 a of the cylinder head 3 of the Internal combustion engine is flanged.
  • the first Line part 5 subsequent second line part 7 is via a flange 12 with a mixing housing 13 in conjunction, which in turn with a Intake line 14 of the internal combustion engine connected is.
  • the intake pipe 14 is part of an an inlet side 3b of the cylinder head 3 flanged Suction module 15.
  • the suction module 15 extends in the direction of a motor longitudinal axis 23 substantially over the entire length of the cylinder head 3 and in approximately parallel to the direction of a motor vertical axis 24.
  • the mixing housing 13 has a first, over an upper side 15a of the suction module 15 protruding Vacuum box 16, which arranged in a mixing housing 13 Exhaust gas recirculation valve controls.
  • the mixing housing 13 has terminals 17 for connecting a second, not shown vacuum box, which also arranged in the mixing housing 13 Throttle controls.
  • the exhaust gas recirculation line 1 is in its Course over a motor-fixed support 18 on the internal combustion engine held, according to the invention of second line part 7 of the exhaust gas recirculation line. 1 is formed with the support 18 to a component 19.
  • the component 19 is preferably formed by a casting and has axially extending stiffening ribs 22 on. In the area of the support 18, the component 19 has a integrally molded mounting flange 20 and is about this flange 20 by means of fastening screws 21 on the cylinder head cover 4 of the internal combustion engine attached.
  • the partially illustrated engine will be in Inclined location built in, causing the center of gravity of the intake module 15 in the direction of the engine vertical axis 24, approximately laterally over the cylinder head cover 4 lies. Due to the inclined mounting position of the engine acts on the suction module 15 together with the mixing housing 13 is a moment that the connected to the suction module 15 Counteracts bracket.
  • the forming the bracket Component 19 thus serves not only for exhaust gas recirculation, but at the same time to support the Mixed housing 13 and the suction module 15th

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)
  • Exhaust-Gas Circulating Devices (AREA)
  • Exhaust Silencers (AREA)

Description

Die Erfindung bezieht sich auf eine Halterung einer Abgasrückführleitung am Motorgehäuse einer Brennkraftmaschine gemäß dem Oberbegriff des Patentanspruchs 1.The invention relates to a holder an exhaust gas recirculation line on the motor housing a Internal combustion engine according to the preamble of the claim 1.

Aus der DE 35 29 543 C2 ist bereits eine gattungsgemäße Halterung einer Abgasrückführleitung am Motorgehäuse einer Brennkraftmaschine bekannt, wobei die Abgasrückführleitung von einem motornahen Abgasrohr abzweigt und mit einer Ansaugleitung der Brennkraftmaschine verbunden ist. Über eine zusätzliche motorfeste Stütze ist die Abgasrückführleitung nebst Abgasrückführventil am Zylinderkopf der Brennkraftmaschine gehalten.From DE 35 29 543 C2 is already a generic Holding an exhaust gas recirculation line on Motor housing of an internal combustion engine known, wherein the exhaust gas recirculation line from a motor near Discharge pipe branches off and with a suction line of the Internal combustion engine is connected. About an additional fixed motor support is the exhaust gas recirculation line with exhaust gas recirculation valve on the cylinder head of the internal combustion engine held.

Zum allgemeinen technischen Hintergrund wird noch auf die DE 40 17 074 A1 und die DE 195 07 354 A1 verwiesen.To the general technical background is still on DE 40 17 074 A1 and DE 195 07 354 A1 referenced.

Der Erfindung liegt die Aufgabe zugrunde, eine kompakte Halterung zu schaffen, welche bei optimaler Nutzung des vorhandenen Bauraumes leicht und kostengünstig herstellbar ist, sowie eine zeit- und kostensparende Montage ermöglicht.The invention is based on the object to create compact mount, which at optimal Use of the available space easily and inexpensively can be produced, and a time and cost-saving Assembly possible.

Diese Aufgabe wird erfindungsgemäß durch die im Kennzeichen des Patentanspruchs 1 gegebenen Merkmale gelöst.This object is achieved by given in the characterizing part of claim 1 Characteristics solved.

Ein Vorteil der erfindungsgemäßen Halterung liegt darin, daß durch die Integration der Stütze in einen Teil der Abgasrückführleitung die Halterung in sehr kompakter Bauweise herstellbar ist. Die Einsparung einer separaten Stütze ermöglicht zudem bei gleichzeitiger Gewichtsreduzierung eine Senkung der Herstellkosten der Halterung sowie eine Verringerung des Montageaufwands.An advantage of the holder according to the invention lies in the fact that by the integration of the support in one Part of the exhaust gas recirculation line the bracket in a very compact Construction can be produced. The saving of a separate support also allows for simultaneous Weight reduction a reduction in manufacturing costs the bracket as well as a reduction of the assembly work.

Das Bauteil dient nicht nur wie oben erwähnt der Halterung der Abgasrückführleitung am Motorgehäuse der Brennkraftmaschine, sondern zusätzlich der Abstützung des Mischgehäuses und des Saugmoduls. Mit dem Befestigen des Bauteils an der Zylinderkopfhaube und am Mischgehäuse erfolgt gleichzeitig sowohl die Halterung der Abgasrückführleitung als auch die Abstützung des Saugmoduls sowie des Mischgehäuses am Motorgehäuse der Brennkraftmaschine. Zudem ermöglicht das Bauteil eine Verringerung des Montageaufwands, da nurmehr eine Abstützung zu montieren ist.The component is not only as mentioned above the holder of the exhaust gas recirculation line on the motor housing the internal combustion engine, but in addition the Support of the mixing housing and the suction module. By attaching the component to the cylinder head cover and at the mixing housing takes place simultaneously both the holder of the exhaust gas recirculation line and the support the suction module and the mixing housing on the engine housing of the internal combustion engine. In addition allows the component a reduction of the assembly effort, there only to mount a support is.

In einer besonders vorteilhaften baulichen Ausgestaltung der Erfindung weist das Bauteil axial verlaufende Versteifungsrippen auf, die den auf das Bauteil wirkenden Kräften entgegenwirken.In a particularly advantageous structural Embodiment of the invention, the component axially extending Reinforcing ribs on the on the component counteract acting forces.

Um eine Vereinfachung der Montage der Halterung zu ermöglichen, sieht eine bevorzugte Ausgestaltung der Erfindung vor, daß die Montage an die Zylinderkopfhaube mittels der ohnehin für die Befestigung der Zylinderkopfhaube am Zylinderkopf der Brennkraftmaschine benötigten Befestigungsschrauben erfolgt.To simplify the mounting of the bracket to allow sees a preferred embodiment the invention that the assembly to the cylinder head cover by means of the anyway for the attachment the cylinder head cover on the cylinder head of the internal combustion engine required fastening screws takes place.

Weitere Ausgestaltungen und Vorteile der Erfindung gehen aus den übrigen Unteransprüchen und der Beschreibung hervor.Further embodiments and advantages of the invention go from the other dependent claims and the description.

In der einzigen Figur ist im folgenden ein Ausführungsbeispiel mit weiteren Einzelheiten näher erläutert. Sie zeigt eine erfindungsgemäße Halterung einer Abgasrückführleitung 1 am Motorgehäuse 2 einer teilweise dargestellten Brennkraftmaschine, die einen Zylinderkopf 3 und eine am Zylinderkopf 3 befestigte Zylinderkopfhaube 4 umfaßt.In the single figure is an embodiment below explained in more detail with further details. It shows a holder according to the invention a Exhaust gas recirculation line 1 on the motor housing 2 a partial shown internal combustion engine, the cylinder head 3 and attached to the cylinder head 3 cylinder head cover 4 includes.

Die Abgasrückführleitung 1 ist zweiteilig ausgebildet und umfaßt einen ersten Leitungsteil 5, der mittels einer Rohrschelle 6 dichtend mit einem zweiten Leitungsteil 7 verbunden ist. Der erste Leitungsteil 5 der Abgasrückführleitung 1 zweigt von einem motornahen Abgasrohr 8 ab, das in einen Sammelraum 9 eines Abgaskrümmers 10 mündet, welcher über Abgasleitungen 11 an einer Auslaßseite 3a des Zylinderkopfes 3 der Brennkraftmaschine angeflanscht ist. Das an das erste Leitungsteil 5 anschließende zweite Leitungsteil 7 steht über eine Flanschverbindung 12 mit einem Mischgehäuse 13 in Verbindung, welches wiederum mit einer Ansaugleitung 14 der Brennkraftmaschine verbunden ist.The exhaust gas recirculation line 1 is formed in two parts and comprises a first conduit part 5, which by means of a pipe clamp 6 sealingly with a second conduit part 7 is connected. The first line part 5 of Exhaust gas recirculation line 1 branches from a near-engine Exhaust pipe 8 from, in a collecting space 9 of an exhaust manifold 10 opens, which via exhaust pipes 11 at an outlet side 3 a of the cylinder head 3 of the Internal combustion engine is flanged. The first Line part 5 subsequent second line part 7 is via a flange 12 with a mixing housing 13 in conjunction, which in turn with a Intake line 14 of the internal combustion engine connected is.

Die Ansaugleitung 14 ist Bestandteil eines an einer Einlaßseite 3b des Zylinderkopfes 3 angeflanschten Saugmodules 15. Das Saugmodul 15 erstreckt sich in Richtung einer Motorlängsachse 23 im wesentlichen über die gesamte Länge des Zylinderkopfes 3 und in etwa parallel zur Richtung einer Motorhochachse 24.The intake pipe 14 is part of an an inlet side 3b of the cylinder head 3 flanged Suction module 15. The suction module 15 extends in the direction of a motor longitudinal axis 23 substantially over the entire length of the cylinder head 3 and in approximately parallel to the direction of a motor vertical axis 24.

Das Mischgehäuse 13 weist eine erste, über eine Oberseite 15a des Saugmoduls 15 hinausragende Unterdruckdose 16 auf, die ein im Mischgehäuse 13 angeordnetes Abgasrückführventil steuert. Das Mischgehäuse 13 weist Anschlüsse 17 zum Anschluß einer zweiten, hier nicht dargestellten Unterdruckdose auf, welche eine ebenfalls im Mischgehäuse 13 angeordnete Drosselklappe steuert.The mixing housing 13 has a first, over an upper side 15a of the suction module 15 protruding Vacuum box 16, which arranged in a mixing housing 13 Exhaust gas recirculation valve controls. The mixing housing 13 has terminals 17 for connecting a second, not shown vacuum box, which also arranged in the mixing housing 13 Throttle controls.

Die Abgasrückführungsleitung 1 ist in ihrem Verlauf über eine motorfeste Stütze 18 an der Brennkraftmaschine gehalten, wobei erfindungsgemäß der zweite Leitungsteil 7 der Abgasrückführungsleitung 1 mit der Stütze 18 zu einem Bauteil 19 ausgebildet ist. Das Bauteil 19 ist vorzugsweise durch ein Gußteil gebildet und weist axial verlaufende Versteifungsrippen 22 auf. Im Bereich der Stütze 18 weist das Bauteil 19 einen einstückig angeformten Befestigungsflansch 20 auf und ist über diesen Flansch 20 mittels Befestigungschrauben 21 an der Zylinderkopfhaube 4 der Brennkraftmaschine befestigt.The exhaust gas recirculation line 1 is in its Course over a motor-fixed support 18 on the internal combustion engine held, according to the invention of second line part 7 of the exhaust gas recirculation line. 1 is formed with the support 18 to a component 19. The component 19 is preferably formed by a casting and has axially extending stiffening ribs 22 on. In the area of the support 18, the component 19 has a integrally molded mounting flange 20 and is about this flange 20 by means of fastening screws 21 on the cylinder head cover 4 of the internal combustion engine attached.

Der nur zum Teil dargestellte Motor wird in schräger Lage eingebaut, wodurch der Schwerpunkt des Saugmoduls 15 in Richtung der Motorhochachse 24 betrachtet, in etwa seitlich über der Zylinderkopfhaube 4 liegt. Aufgrund der schrägen Einbaulage des Motors wirkt auf das Saugmodul 15 nebst Mischgehäuse 13 ein Moment, dem die mit dem Saugmodul 15 verbundene Halterung entgegenwirkt. Das die Halterung ausbildende Bauteil 19 dient somit nicht nur zur Abgasrückführung, sondern auch gleichzeitig zur Abstützung des Mischgehäuses 13 und des Saugmoduls 15.The partially illustrated engine will be in Inclined location built in, causing the center of gravity of the intake module 15 in the direction of the engine vertical axis 24, approximately laterally over the cylinder head cover 4 lies. Due to the inclined mounting position of the engine acts on the suction module 15 together with the mixing housing 13 is a moment that the connected to the suction module 15 Counteracts bracket. The forming the bracket Component 19 thus serves not only for exhaust gas recirculation, but at the same time to support the Mixed housing 13 and the suction module 15th

In einer weiteren Ausgestaltung der Erfindung wäre vorstellbar, daß die Befestigungsschrauben 21 zur Befestigung der Halterung bzw. des Bauteils 19 an der Zylinderkopfhaube 4 gleichzeitig zur Befestigung der Zylinderkopfhaube 4 am Zylinderkopf 3 der Brennkraftmaschine dienen, so daß separate Schrauben entfallen können.In a further embodiment of the invention It would be conceivable that the fastening screws 21 for Attachment of the holder or the component 19 to the Cylinder head cover 4 at the same time for fastening the Cylinder head cover 4 on the cylinder head 3 of the internal combustion engine serve, so that separate screws omitted can.

Claims (7)

  1. Holding device for an exhaust-gas recirculation line on the engine casing of an internal combustion engine, the exhaust-gas recirculation line branching off from an exhaust pipe which is close to the engine and being connected to an intake line of the internal combustion engine, characterized in that the course of the exhaust-gas recirculation line is held on the internal combustion engine by a support fixed to the engine, at least part of the exhaust-gas recirculation line (1) between the exhaust pipe (8) which is close to the engine and a flanged joint (12) being designed to form one component (19) with the support (18), the flanged joint (12) of the exhaust-gas recirculation line (1) being connected to a mixer housing (13), in which an exhaust-gas recirculation valve is arranged.
  2. Holding device for an exhaust-gas recirculation line of an internal combustion engine according to Claim 1, characterized in that the support (18) is fastened to a cylinder-head cover (4) of the internal combustion engine.
  3. Holding device for an exhaust-gas recirculation line of an internal combustion engine according to Claim 1, characterized in that the exhaust-gas recirculation line (1) is connected to an intake module (15) via a mixer housing (13) and to an exhaust-gas manifold (10).
  4. Holding device for an exhaust-gas recirculation line of an internal combustion engine according to Claim 1, characterized in that the component (19) serves to support the mixer housing (13) and the intake module (15).
  5. Holding device for an exhaust-gas recirculation line of an internal combustion engine according to Claim 1 or 4, characterized in that the component (19) is formed by a casting.
  6. Holding device for an exhaust-gas recirculation line of an internal combustion engine according to one of Claims 1, 4 or 5, characterized in that the component (19) has axially extending reinforcing ribs (22).
  7. Holding device for an exhaust-gas recirculation line of an internal combustion engine according to one of Claims 1 or 4 to 6, characterized in that fastening screws (21) are provided for fastening the component (19) to the cylinder-head cover (4) and simultaneously serve for fastening the cylinder-head cover (4) to a cylinder head (3) of the internal combustion engine.
EP97121920A 1997-01-21 1997-12-12 Structure for supporting the exhaust gas recirculation conduit on the engine Expired - Lifetime EP0857869B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19701873A DE19701873C1 (en) 1997-01-21 1997-01-21 Retainer for exhaust gas recirculation conduit
DE19701873 1997-01-21

Publications (3)

Publication Number Publication Date
EP0857869A1 EP0857869A1 (en) 1998-08-12
EP0857869B1 EP0857869B1 (en) 2001-11-14
EP0857869B2 true EP0857869B2 (en) 2004-03-17

Family

ID=7817867

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97121920A Expired - Lifetime EP0857869B2 (en) 1997-01-21 1997-12-12 Structure for supporting the exhaust gas recirculation conduit on the engine

Country Status (4)

Country Link
US (1) US5988148A (en)
EP (1) EP0857869B2 (en)
DE (2) DE19701873C1 (en)
ES (1) ES2167669T3 (en)

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US6186127B1 (en) * 1999-09-20 2001-02-13 Siemens Canada Limited Coolant manifold adapter for integrated mounting of EEGR valve and throttle body on an engine
DE10209167A1 (en) 2002-03-01 2003-09-11 Daimler Chrysler Ag Internal combustion engine for a motor vehicle
US20040126761A1 (en) * 2002-12-10 2004-07-01 Isis Pharmaceuticals Inc. Modulation of alpha-methylacyl-CoA racemase expression
AU2004263140A1 (en) * 2003-08-07 2005-02-17 Novartis Vaccines And Diagnostics, Inc. Trefoil factor 3 (TFF3) as a target for anti-cancer therapy
US6945199B2 (en) * 2003-09-24 2005-09-20 Hayes Lemmerz International, Inc. Engine coolant crossover assembly
WO2005069791A2 (en) * 2004-01-08 2005-08-04 Cedars-Sinai Medical Center Compositions and methods for enhancing the th1 response in connection with dendritic cell vaccines
US20090084920A1 (en) 2007-09-27 2009-04-02 Victor Cerabone Exhaust gas recirculation line holder
US10156171B2 (en) 2015-08-07 2018-12-18 Cummins Emission Solutions Inc. Mounting aftertreatment systems from service joints

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Also Published As

Publication number Publication date
EP0857869A1 (en) 1998-08-12
DE59705381D1 (en) 2001-12-20
ES2167669T3 (en) 2002-05-16
EP0857869B1 (en) 2001-11-14
US5988148A (en) 1999-11-23
DE19701873C1 (en) 1998-06-04

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