EP0365862A1 - Exhaust gas recirculation device for a multicylinder diesel engine - Google Patents

Exhaust gas recirculation device for a multicylinder diesel engine Download PDF

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Publication number
EP0365862A1
EP0365862A1 EP89118009A EP89118009A EP0365862A1 EP 0365862 A1 EP0365862 A1 EP 0365862A1 EP 89118009 A EP89118009 A EP 89118009A EP 89118009 A EP89118009 A EP 89118009A EP 0365862 A1 EP0365862 A1 EP 0365862A1
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EP
European Patent Office
Prior art keywords
exhaust gas
gas recirculation
exhaust
valve
partition wall
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.)
Granted
Application number
EP89118009A
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German (de)
French (fr)
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EP0365862B1 (en
Inventor
Gernot Hertweck
Christian Enderle
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.)
Daimler Benz AG
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Daimler Benz AG
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Publication date
Application filed by Daimler Benz AG filed Critical Daimler Benz AG
Priority to AT89118009T priority Critical patent/ATE74403T1/en
Publication of EP0365862A1 publication Critical patent/EP0365862A1/en
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Publication of EP0365862B1 publication Critical patent/EP0365862B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • F01N13/011—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00 having two or more purifying devices arranged in parallel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • F01N13/08—Other arrangements or adaptations of exhaust conduits
    • F01N13/10—Other arrangements or adaptations of exhaust conduits of exhaust manifolds
    • 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
    • F02M26/14—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories in relation to the exhaust system
    • F02M26/16—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories in relation to the exhaust system with EGR valves located at or near the connection to the exhaust system
    • 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
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/65—Constructional details of EGR valves
    • F02M26/66—Lift valves, e.g. poppet valves
    • F02M26/68—Closing members; Valve seats; Flow passages
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • F01N13/08—Other arrangements or adaptations of exhaust conduits
    • F01N13/10—Other arrangements or adaptations of exhaust conduits of exhaust manifolds
    • F01N13/107—More than one exhaust manifold or exhaust collector
    • 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
    • F02B3/00—Engines characterised by air compression and subsequent fuel addition
    • F02B3/06—Engines characterised by air compression and subsequent fuel addition with compression ignition

Definitions

  • the invention relates to a device for exhaust gas recirculation on a multi-cylinder diesel internal combustion engine according to the preamble of patent claim 1.
  • the invention is therefore based on the object of providing a device for a dual-flow exhaust manifold arrangement, by means of which exhaust gas quantities which are recirculated can be removed from the total exhaust gas stream with little construction effort and without requiring additional space.
  • recirculated exhaust gas is removed in equal parts from both floods of the exhaust manifold arrangement, the separate double flow being easily recoverable when the exhaust gas recirculation is prevented.
  • a diesel internal combustion engine 1 is shown in series construction with a double-flow exhaust manifold arrangement 2, which consists of two exhaust manifolds 3, 4 assigned to cylinder groups with a device 5 for returning the exhaust gases to an intake line (not shown).
  • Manifold parts 6, 7 of the exhaust manifold 3, 4 are combined in the area of the exhaust gas recirculation to form a double pipe 8.
  • the intermediate or partition wall 9 of the double pipe 8 separating the two floods is provided with an opening 10 through which exhaust gases can be fed to the intake line via an exhaust gas recirculation line 11.
  • the exhaust gas recirculation line 11 is flanged in the middle on a web 8a connecting the two tubes of the double tube 8 (FIGS. 1 and 2) and contains a controllable exhaust gas recirculation valve 12 with a valve plate 13, the side of which facing the double tube 8 contains the opening 10 when the valve 12 is in the closed position has almost completely filling plate-shaped partition part 14.
  • the partition wall part 14 protruding into the opening 10 has an approximately semicircular shape (FIG. 3) and, according to FIG. 2, separates the two flows in the double pipe 8 to a minimal gap 15 in order to ensure a reliable sealing of the valve plate 13 on its valve seat 16.
  • the exhaust gas recirculation valve 12 is arranged away from the exhaust manifold, namely flanged to a cylinder section 17 of the internal combustion engine downstream of a line section 11a of the exhaust gas recirculation line 11. Due to the remote position of the temperature-sensitive exhaust gas recirculation valve 12, this is significantly less stressed with regard to the heat exposure and heat-insulating measures are not necessary; however, the dual flow is slightly disturbed due to the lack of a control element in the partition 9 of the double pipe 8, since the two flows are not completely separated from one another.
  • the exhaust manifolds 3, 4 which are assigned to the cylinder groups and are located one behind the other are connected to one another by an elastic expansion body 18 in order to counteract thermal stresses occurring between the exhaust manifolds of different lengths.

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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)
  • Exhaust Silencers (AREA)

Abstract

A device for the exhaust gas recirculation on a multi-cylinder diesel internal combustion engine with exhaust manifolds assigned to cylinder groups has manifold parts integrally combined into a twin branch with a common partition wall separating the flows of the two exhaust manifolds, in which partition wall an opening is provided, via which the manifold parts of the two exhaust manifolds are in connection with the exhasut recirculation pipe.

Description

Die Erfindung betrifft eine Vorrichtung zur Abgasrück­führung an einer mehrzylindrigen Dieselbrennkraftmaschine nach dem Oberbegriff des Patentanspruchs 1.The invention relates to a device for exhaust gas recirculation on a multi-cylinder diesel internal combustion engine according to the preamble of patent claim 1.

Aus der DE-OS 29 46 017 ist es bekannt, daß die das Ab­gasrückführventil enthaltende Abgasrückführleitung von einem der zwei Zylindergruppen zugeordneten Abgaskrümmer einer zweiflutigen Abgaskrümmeranordnung abzweigt. Eine der­artige Ausführung ist mit dem Nachteil behaftet, daß vorgesehene NOx-Grenzwerte nicht eingehalten werden können, da nur ein Teil des Gesamtabgasstromes für die rückgeführte Abgasmenge herangezogen wird.From DE-OS 29 46 017 it is known that the exhaust gas recirculation line containing the exhaust gas recirculation valve branches off from one of the two cylinder groups associated exhaust manifold of a double-flow exhaust manifold arrangement. Such an embodiment has the disadvantage that the NO x limit values provided cannot be met, since only a part of the total exhaust gas flow is used for the recirculated exhaust gas quantity.

Der Erfindung liegt daher die Aufgabe zugrunde, eine Vorrichtung für eine zweiflutige Abgaskrümmeranordnung zu schaffen, durch die bei geringem Bauaufwand und ohne zusätzlichen Platzbedarf dem Gesamtabgasstrom rückge­führte Abgasmengen entnommen werden können.The invention is therefore based on the object of providing a device for a dual-flow exhaust manifold arrangement, by means of which exhaust gas quantities which are recirculated can be removed from the total exhaust gas stream with little construction effort and without requiring additional space.

Die Aufgabe wird bei einer gattungsgemäßen Vorrichtung durch die im Kennzeichen des Patentanspruchs 1 ange­gebenen Merkmale gelöst.The object is achieved in a generic device by the features specified in the characterizing part of patent claim 1.

Durch die erfindungsgemäßen Maßnahmen wird beiden Fluten der Abgaskrümmeranordnung zu gleichen Teilen rückge­führtes Abgas entnommen, wobei bei Unterbindung der Abgas­rückführung die getrennte Zweiflutigkeit auf einfache Weise wieder herstellbar ist.By means of the measures according to the invention, recirculated exhaust gas is removed in equal parts from both floods of the exhaust manifold arrangement, the separate double flow being easily recoverable when the exhaust gas recirculation is prevented.

Aus der DE 30 22 959 C 2 wird zwar auch beiden Fluten der Abgaskrümmeranordnung rückgeführtes Abgas entnommen, je­doch liegt hier ein erheblicher Bauaufwand vor, da von jedem Abgaskrümmer eine separate Abgasrückführleitung mit jeweils einem Steuerventil für die Abgasrückführrate ab­zweigt.From DE 30 22 959 C 2, two flows of the exhaust manifold arrangement are recirculated exhaust gas, but there is a considerable amount of work here, since a separate exhaust gas recirculation line branches off from each exhaust manifold, each with a control valve for the exhaust gas recirculation rate.

In den Unteransprüchen sind noch förderliche Weiter­bildungen angegeben.In the subclaims, further training is indicated.

Anhand der Zeichnung wird im folgenden die Erfindung näher erläutert. Es zeigen:

  • Fig. 1 die erfindungsgemäße Vorrichtung an einer zwei Abgaskrümmer aufweisenden Abgaskrümmer­anordnung,
  • Fig. 2 die Vorrichtung in vergrößerter Darstellung,
  • Fig. 3 die Vorrichtung im Schnitt nach der Linie III-III in Fig. 2,
  • Fig. 4 ein weiteres Ausführungsbeispiel der erfindungs­gemäßen Vorrichtung.
The invention is explained in more detail below with the aid of the drawing. Show it:
  • 1 shows the device according to the invention on an exhaust manifold arrangement having two exhaust manifolds,
  • 2 shows the device in an enlarged view,
  • 3 shows the device in section along the line III-III in Fig. 2,
  • Fig. 4 shows another embodiment of the device according to the invention.

In Fig. 1 und 4 ist eine Dieselbrennkraftmaschine 1 in Reihenbauweise mit einer zweiflutigen Abgaskrümmeran­ordnung 2 gezeigt, die aus Zylindergruppen zugeordneten zwei Abgaskrümmern 3,4 mit einer Vorrichtung 5 für die Rückführung der Abgase in eine Ansaugleitung (nicht dar­gestellt) besteht.1 and 4, a diesel internal combustion engine 1 is shown in series construction with a double-flow exhaust manifold arrangement 2, which consists of two exhaust manifolds 3, 4 assigned to cylinder groups with a device 5 for returning the exhaust gases to an intake line (not shown).

Krümmerteile 6,7 der Abgaskrümmer 3,4 sind im Bereich der Abgasrückführung zu einem Doppelrohr 8 baueinheitlich zusammengefaßt. Die die zwei Fluten trennende Zwischen- bzw. Trennwand 9 des Doppelrohres 8 ist mit einer Durch­brechung 10 versehen, durch die Abgase über eine Abgas­rückführleitung 11 der Ansaugleitung zuführbar sind. Die Abgasrückführleitung 11 ist mittig an einem die beiden Rohre des Doppelrohres 8 verbindenden Steg 8a angeflanscht (Fig.1 und 2) und enthält ein steuerbares Abgasrückführ­ventil 12 mit einem Ventilteller 13, dessen dem Doppel­rohr 8 zugewandte Seite einen die Durchbrechung 10 bei Schließlage des Ventiles 12 nahezu vollständig ausfüllenden plattenförmigen Trennwandteil 14 aufweist. Der in die Durchbrechung 10 hineinragende Trennwandteil 14 hat etwa halbkreisförmige Gestalt (Fig. 3) und trennt gemäß Fig. 2 beide Fluten im Doppelrohr 8 bis auf einen minimalen Spalt 15, um ein sicheres Abdichten des Ventiltellers 13 auf seinem Ventilsitz 16 zu gewährleisten.Manifold parts 6, 7 of the exhaust manifold 3, 4 are combined in the area of the exhaust gas recirculation to form a double pipe 8. The intermediate or partition wall 9 of the double pipe 8 separating the two floods is provided with an opening 10 through which exhaust gases can be fed to the intake line via an exhaust gas recirculation line 11. The exhaust gas recirculation line 11 is flanged in the middle on a web 8a connecting the two tubes of the double tube 8 (FIGS. 1 and 2) and contains a controllable exhaust gas recirculation valve 12 with a valve plate 13, the side of which facing the double tube 8 contains the opening 10 when the valve 12 is in the closed position has almost completely filling plate-shaped partition part 14. The partition wall part 14 protruding into the opening 10 has an approximately semicircular shape (FIG. 3) and, according to FIG. 2, separates the two flows in the double pipe 8 to a minimal gap 15 in order to ensure a reliable sealing of the valve plate 13 on its valve seat 16.

Somit ist durch die gekoppelte Ausführung des Ventil­tellers 13 mit dem Trennwandteil 14 sowohl der Abgasfluß über die Abgasrückführleitung 11 zur Ansaugleitung voll­ständig unterbunden als auch die getrennte Zweiflutigkeit fast vollständig erhalten. Der Gaswechsel im vollastnahen, also abgasrückführfreien Betrieb kann ungestört über beide Fluten stattfinden.Thus, due to the coupled design of the valve plate 13 with the partition wall part 14, both the exhaust gas flow via the exhaust gas recirculation line 11 to the intake line is completely prevented, and the separate dual flow is almost completely retained. The gas change at full throttle, Exhaust gas recirculation-free operation can take place undisturbed over both floods.

Bei der Ausführung gemäß Fig. 4 ist das Abgasrückführ­ventil 12 abgaskrümmerfern angeordnet, nämlich stromab eines Leitungsabschnittes 11a der Abgasrückführleitung 11 am Zylinderkopf 17 der Brennkraftmaschine angeflanscht. Durch die entfernte Lage des temperaturempfindlichen Ab­gasrückführventiles 12 ist dieses bezüglich der Wärmebeauf­schlagung wesentlich geringer belastet und wärmedämmende Maßnahmen sind nicht erforderlich, allerdings ist die Zweiflutigkeit aufgrund des fehlenden Steuerorgans in der Trennwand 9 des Doppelrohres 8 leicht gestört, da beide Fluten nicht vollständig voneinander getrennt sind.In the embodiment according to FIG. 4, the exhaust gas recirculation valve 12 is arranged away from the exhaust manifold, namely flanged to a cylinder section 17 of the internal combustion engine downstream of a line section 11a of the exhaust gas recirculation line 11. Due to the remote position of the temperature-sensitive exhaust gas recirculation valve 12, this is significantly less stressed with regard to the heat exposure and heat-insulating measures are not necessary; however, the dual flow is slightly disturbed due to the lack of a control element in the partition 9 of the double pipe 8, since the two flows are not completely separated from one another.

Die den Zylindergruppen zugeordneten und hintereinander­liegenden Abgaskrümmer 3,4 sind durch einen elastischen Dehnkörper 18 miteinander verbunden, um auftretenden Wärmespannungen zwischen den verschieden lang ausge­führten Abgaskrümmern entgegenzuwirken.The exhaust manifolds 3, 4 which are assigned to the cylinder groups and are located one behind the other are connected to one another by an elastic expansion body 18 in order to counteract thermal stresses occurring between the exhaust manifolds of different lengths.

Claims (4)

1. Vorrichtung zur Abgasrückführung an einer mehr­zylindrigen Dieselbrennkraftmaschine mit Zylindergruppen zugeordneten Abgaskrümmern, mit baueinheitlich zu einem Doppelrohr zusammengefaßten Krümmerteilen mit einer die Fluten beider Abgaskrümmer trennenden gemeinsamen Zwischen­wand, ferner mit einer zur Ansaugleitung führenden Abgas­rückführleitung und einem die Abgasrückführrate in Ab­hängigkeit von Betriebsparametern der Brennkraftmaschine steuernden Abgasrückführventil,
dadurch gekennzeichnet,
daß die Zwischenwand (9) zwischen den Krümmerteilen (6,7) eine Durchbrechung (10) aufweist, über die die Krümmer­teile (6,7) mit der einzigen Abgasrückführleitung (11) in Verbindung stehen.1. Device for exhaust gas recirculation on a multi-cylinder diesel internal combustion engine with exhaust manifolds assigned to cylinder groups, with manifold parts which are combined to form a double pipe with a common partition separating the floods of both exhaust manifolds, and also with an exhaust gas recirculation line leading to the intake line and an exhaust gas recirculation rate controlling the exhaust gas recirculation rate as a function of operating parameters of the internal combustion engine ,
characterized,
that the intermediate wall (9) between the elbow parts (6,7) has an opening (10) through which the elbow parts (6,7) are connected to the single exhaust gas recirculation line (11). 2. Vorrichtung nach Anspruch 1 ,
dadurch gekennzeichnet,
daß in der Durchbrechung (10) ein steuerbarer und mit dem Abgasrückführventil gekoppelter Trennwandteil (14) angeordnet ist.2. Device according to claim 1,
characterized,
that in the opening (10) a controllable and coupled to the exhaust gas recirculation valve part (14) is arranged. 3. Vorrichtung nach Anspruch 1 oder 2 , bei der das Abgasrückführventil einen Ventilteller aufweist,
dadurch gekennzeichnet,
daß der mit dem Trennwandteil (14) fest verbundene Ventilteller (13) bei Schließlage den Ventilsitz (16) abdichtet, während das Trennwandteil (14) die Krümmer­teile (6,7) bis auf einen minimalen Spalt (15) trennt.3. Apparatus according to claim 1 or 2, wherein the exhaust gas recirculation valve has a valve plate,
characterized,
that the valve plate (13) firmly connected to the partition wall part (14) seals the valve seat (16) in the closed position, while the partition wall part (14) separates the manifold parts (6,7) to a minimal gap (15). 4. Vorrichtung nach Anspruch 1 ,
dadurch gekennzeichnet,
daß das Abgasrückführventil (12) im abgaskrümmerfernen Bereich in der Abgasrückführleitung (11) eingesetzt ist.4. The device according to claim 1,
characterized,
that the exhaust gas recirculation valve (12) is inserted in the exhaust manifold area in the exhaust gas recirculation line (11).
EP89118009A 1988-10-28 1989-09-28 Exhaust gas recirculation device for a multicylinder diesel engine Expired - Lifetime EP0365862B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89118009T ATE74403T1 (en) 1988-10-28 1989-09-28 DEVICE FOR EXHAUST GAS RECIRCULATION ON A MULTI-CYLINDER DIESEL ENGINE.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3836723A DE3836723C1 (en) 1988-10-28 1988-10-28
DE3836723 1988-10-28

Publications (2)

Publication Number Publication Date
EP0365862A1 true EP0365862A1 (en) 1990-05-02
EP0365862B1 EP0365862B1 (en) 1992-04-01

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP89118009A Expired - Lifetime EP0365862B1 (en) 1988-10-28 1989-09-28 Exhaust gas recirculation device for a multicylinder diesel engine

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Country Link
US (1) US4969445A (en)
EP (1) EP0365862B1 (en)
JP (1) JPH02161162A (en)
AT (1) ATE74403T1 (en)
DE (1) DE3836723C1 (en)

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US5802846A (en) * 1997-03-31 1998-09-08 Caterpillar Inc. Exhaust gas recirculation system for an internal combustion engine
DE19810840A1 (en) * 1998-03-12 1999-09-16 Bayerische Motoren Werke Ag Multi-cylinder internal combustion engine with exhaust gas recirculation
US6006733A (en) * 1998-10-08 1999-12-28 Navistar International Transportation Exhaust gas recirculation apparatus
FR2833312A1 (en) * 2001-12-11 2003-06-13 Qualetude Exhaust gas recirculation duct for motor vehicle internal combustion engine has tube with end couplings and corrugated section at one end to absorb vibration
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US8944035B2 (en) 2011-06-29 2015-02-03 General Electric Company Systems and methods for controlling exhaust gas recirculation
US8672090B1 (en) * 2012-09-30 2014-03-18 Favrecia Emissions Control Technologies Exhaust component with vibration isolated pipe
DE102013003738A1 (en) 2013-03-05 2014-09-11 Daimler Ag Exhaust gas recirculation valve
DE102013003730A1 (en) 2013-03-05 2014-09-11 Daimler Ag Exhaust gas recirculation valve
DE102015122351A1 (en) * 2015-12-21 2017-06-22 Ihi Charging Systems International Gmbh Exhaust gas guide section for an exhaust gas turbocharger and method for operating an exhaust gas turbocharger
DE102015122355A1 (en) * 2015-12-21 2017-06-22 Ihi Charging Systems International Gmbh Exhaust gas guide section for an exhaust gas turbocharger and method for operating an exhaust gas turbocharger

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DE2946017A1 (en) * 1978-12-08 1980-06-12 Nissan Motor EXHAUST CHANNEL FOR COMBUSTION ENGINE
DE3305704A1 (en) * 1982-02-25 1983-09-15 Nissan Motor Co., Ltd., Yokohama, Kanagawa INTERNAL COMBUSTION ENGINE

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ATE74403T1 (en) 1992-04-15
EP0365862B1 (en) 1992-04-01
DE3836723C1 (en) 1989-06-01
US4969445A (en) 1990-11-13
JPH02161162A (en) 1990-06-21

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