US20090229248A1 - Exhaust device comprising a cylinder head with a thermally decoupled integrated exhaust manifold - Google Patents

Exhaust device comprising a cylinder head with a thermally decoupled integrated exhaust manifold Download PDF

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Publication number
US20090229248A1
US20090229248A1 US12/306,141 US30614107A US2009229248A1 US 20090229248 A1 US20090229248 A1 US 20090229248A1 US 30614107 A US30614107 A US 30614107A US 2009229248 A1 US2009229248 A1 US 2009229248A1
Authority
US
United States
Prior art keywords
cylinder head
exhaust
cavity
exhaust device
receiving bore
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.)
Abandoned
Application number
US12/306,141
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English (en)
Inventor
Eric Dumas
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.)
Renault SAS
Original Assignee
Renault SAS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Renault SAS filed Critical Renault SAS
Assigned to RENAULT S.A.S. reassignment RENAULT S.A.S. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: DUMAS, ERIC
Publication of US20090229248A1 publication Critical patent/US20090229248A1/en
Abandoned 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
    • F01N13/08—Other arrangements or adaptations of exhaust conduits
    • F01N13/10—Other arrangements or adaptations of exhaust conduits of exhaust manifolds
    • F01N13/102—Other arrangements or adaptations of exhaust conduits of exhaust manifolds having thermal insulation
    • 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
    • F01N13/14—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 thermal insulation
    • F01N13/141—Double-walled exhaust pipes or housings
    • F01N13/143—Double-walled exhaust pipes or housings with air filling the space between both walls
    • 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
    • F01N13/16—Selection of particular materials
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F1/00—Cylinders; Cylinder heads 
    • F02F1/24—Cylinder heads
    • F02F1/243—Cylinder heads and inlet or exhaust manifolds integrally cast together
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F1/00—Cylinders; Cylinder heads 
    • F02F1/24—Cylinder heads
    • F02F1/42—Shape or arrangement of intake or exhaust channels in cylinder heads
    • F02F1/4264—Shape or arrangement of intake or exhaust channels in cylinder heads of exhaust channels
    • 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
    • F01N13/18—Construction facilitating manufacture, assembly, or disassembly
    • F01N13/1838—Construction facilitating manufacture, assembly, or disassembly characterised by the type of connection between parts of exhaust or silencing apparatus, e.g. between housing and tubes, between tubes and baffles
    • F01N13/1844—Mechanical joints
    • F01N13/185—Mechanical joints the connection being realised by deforming housing, tube, baffle, plate, or parts thereof
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F1/00—Cylinders; Cylinder heads 
    • F02F1/24—Cylinder heads
    • F02F1/42—Shape or arrangement of intake or exhaust channels in cylinder heads
    • F02F1/4264—Shape or arrangement of intake or exhaust channels in cylinder heads of exhaust channels
    • F02F2001/4278—Exhaust collectors

Definitions

  • the invention relates to an exhaust device for a multicylinder internal combustion engine of a motor vehicle comprising a cylinder head of said engine in which are arranged exhaust ducts of which a first end of each is connected to a combustion chamber of said engine and of which the second end opens into a cavity or plenum of an exhaust manifold incorporated into the cylinder head of which an outlet duct is connected externally to a device for depolluting the exhaust gases of an exhaust line of the vehicle.
  • exhaust devices comprise exhaust ducts formed in the cylinder head of the engine which coincide with ducts of the manifold arranged facing the exhaust ducts.
  • the manifold comprises at least one outlet duct which is connected to an exhaust line of the motor vehicle.
  • the effectiveness of the depollution devices is greatly dependent on their operating temperature. Having these devices at a distance from the combustion chambers of the engine slows down their rise in temperature during the first minutes of operation of the engine and reduces their effectiveness even though it is during these first minutes of operation of the engine that the largest quantity of pollutants is emitted.
  • Document FR-2.738.289 describes notably a manifold of this type, wherein the exhaust ducts of the cylinder head open into a cavity or plenum half formed in the manifold and half in the cylinder head.
  • Document DE-A-3.815.408 describes, for its part, a manifold formed totally in the cylinder head and cast in one piece with the latter.
  • the invention proposes a device of the type described above comprising a manifold incorporated into the cylinder head of the engine and furnished with means for thermally decoupling it from said cylinder head.
  • the invention proposes a manifold of the type described above, characterized in that the cavity or plenum of the manifold is formed in an element fitted to the inside of the cylinder head and in that said element is thermally decoupled from the cylinder head by thermal decoupling means.
  • FIGURE is a schematic view of a cylinder head for an exhaust device according to the invention.
  • the single FIGURE shows a cylinder head 10 for an exhaust device made according to the invention.
  • exhaust ducts 12 are arranged in the cylinder head 10 .
  • a first end 14 of each duct 12 is connected to a combustion chamber 16 of the engine and the second end 18 of each duct 12 opens into a cavity 20 or plenum of an exhaust manifold 22 incorporated into the cylinder head 10 .
  • An outlet duct 24 of the manifold 22 is connected externally to a device (not shown) for depolluting the exhaust gases of an exhaust line (not shown) of the vehicle.
  • the cylinder head 10 comprises, between each combustion chamber 16 , cavities 30 for the circulation of a liquid for cooling the engine.
  • the cavity 20 or plenum of the manifold 22 is formed in an element 26 which is fitted to the inside of the cylinder head 10 and said element 26 is thermally decoupled from the cylinder head 10 by thermal decoupling means 28 .
  • the second ends 18 of the exhaust ducts 12 open into a receiving bore 32 which is formed in the cylinder head 10 .
  • This bore 32 receives a tubular insert 26 forming the fitted element 26 which is fitted to the inside of the cylinder head, which comprises orifices 34 for communication with the second ends 18 of the exhaust ducts 12 , and which comprises the outlet duct 24 opening to the outside of the cylinder head 10 .
  • the tubular insert 26 is made of stainless steel, because this material has thermal expansion characteristics suitable for ensuring a satisfactory seal when it is connected to the depollution device, irrespective of its temperature. It should be noted that this characteristic does not limit the invention, and that any other material having similar characteristics could be used for the correct application of the invention.
  • the tubular insert 26 is mounted without clearance in the receiving bore 32 of the cylinder head 10 .
  • the tubular insert 26 is for example sleeve-fitted into the bore 32 with an adjustment of the tight type.
  • the thermal decoupling means 28 are arranged in the cylinder head around the tubular insert 26 and at least between two consecutive exhaust ducts 12 .
  • the thermal decoupling means 28 comprise at least one cavity 28 which is formed in the material of the cylinder head 10 around the receiving bore 32 , and which opens into said bore 32 .
  • This cavity is filled with air and therefore allows a thermal decoupling of the insert 26 relative to the cylinder head, preventing the heat of the cylinder head 10 from communicating with the insert 26 by conduction.
  • the device comprises a cavity 28 which is arranged around the receiving bore 32 between each pair of consecutive exhaust ducts 12 , and a cavity 28 which is arranged around the receiving bore 32 between an end exhaust duct 12 and an end external face 36 of the cylinder head 10 .
  • each cavity 28 is made when the cylinder head 10 is molded.
  • the invention therefore makes it possible to benefit from a device comprising a manifold 26 fitted into the cylinder head 10 as close as possible to the combustion chambers 12 , which makes it possible to optimize the performance of a depollution device connected to its outlet duct 24 and which does not have the disadvantages of the incorporated manifolds known in the prior art because of its thermal decoupling with respect to the cylinder head 10 .

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Exhaust Silencers (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)
US12/306,141 2006-06-23 2007-06-12 Exhaust device comprising a cylinder head with a thermally decoupled integrated exhaust manifold Abandoned US20090229248A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR0652631A FR2902827B1 (fr) 2006-06-23 2006-06-23 Dispositif d'echappement comportant une culasse munie d'un collecteur d'echappement integre decouple thermiquement
FR0652631 2006-06-23
PCT/FR2007/051423 WO2007148000A1 (fr) 2006-06-23 2007-06-12 Dispositif d'echappement comportant une culasse munie d'un collecteur d'echappement integre decouple thermique

Publications (1)

Publication Number Publication Date
US20090229248A1 true US20090229248A1 (en) 2009-09-17

Family

ID=37496874

Family Applications (1)

Application Number Title Priority Date Filing Date
US12/306,141 Abandoned US20090229248A1 (en) 2006-06-23 2007-06-12 Exhaust device comprising a cylinder head with a thermally decoupled integrated exhaust manifold

Country Status (9)

Country Link
US (1) US20090229248A1 (fr)
EP (1) EP2032827B1 (fr)
JP (1) JP2009541656A (fr)
AT (1) ATE453796T1 (fr)
DE (1) DE602007004112D1 (fr)
ES (1) ES2336629T3 (fr)
FR (1) FR2902827B1 (fr)
RU (1) RU2439356C2 (fr)
WO (1) WO2007148000A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2228529B1 (fr) 2009-03-13 2016-07-27 Ford Global Technologies, LLC Culasse pour moteur atmosphérique et utilisation d'une telle culasse

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3084109B1 (fr) 2018-07-23 2022-08-19 Renault Sas Dispositif d’isolation thermique a l’echappement de moteur thermique

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3633368A (en) * 1970-08-12 1972-01-11 Du Pont Exhaust gas reactor
US4187678A (en) * 1976-04-08 1980-02-12 Perkins Engines Limited Marine engine manifold
US4759181A (en) * 1987-02-02 1988-07-26 Biritz Ronald A Manifold, apparatus and system for exhaust transfer and cooling of V-type marine engines
US5239825A (en) * 1991-02-13 1993-08-31 Sanshin Kogyo Kabushiki Kaisha Exhaust emission control device for outboard motor
US5305603A (en) * 1992-02-28 1994-04-26 Mtu Motoren- Turbinen-Union Friedrichshafen Gmbh Exhaust gas duct for a row of cylinders of an internal combustion engine
US5331930A (en) * 1993-04-05 1994-07-26 Mcwhorter Edward M Univalve engine
US5337559A (en) * 1992-03-06 1994-08-16 Mtu Friedrichshafen Gmbh Supercharged multi-cylinder internal-combustion engine interior exhaust pipe
US5463867A (en) * 1993-12-14 1995-11-07 Mtu Motoren- Und Turbinen-Union Friedrichshafen Gmbh Supercharged internal combustion engine exhaust system
US5829249A (en) * 1996-01-19 1998-11-03 Outboard Marine Corporation Internal combustion engine with exhaust passage and reactor having a common wall

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1322495A (en) * 1969-07-18 1973-07-04 Ricardo & Co Engineers Exhaust passages in internal combustion engines
JPS5548746Y2 (fr) * 1975-12-27 1980-11-14
AT395637B (de) * 1987-05-14 1993-02-25 Steyr Daimler Puch Ag Abgaseinrichtung fuer mehrzylinder-brennkraftmaschinen
AT397416B (de) * 1987-05-22 1994-04-25 Steyr Daimler Puch Ag Abgaseinrichtung für mehrzylinder- brennkraftmaschinen
AT397417B (de) * 1988-05-02 1994-04-25 Avl Verbrennungskraft Messtech Abgassammelrohr einer mehrzylinder- brennkraftmaschine
FR2738289B1 (fr) * 1995-08-31 1997-10-17 Renault Dispositif d'echappement pour moteur a combustion interne

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3633368A (en) * 1970-08-12 1972-01-11 Du Pont Exhaust gas reactor
US4187678A (en) * 1976-04-08 1980-02-12 Perkins Engines Limited Marine engine manifold
US4759181A (en) * 1987-02-02 1988-07-26 Biritz Ronald A Manifold, apparatus and system for exhaust transfer and cooling of V-type marine engines
US5239825A (en) * 1991-02-13 1993-08-31 Sanshin Kogyo Kabushiki Kaisha Exhaust emission control device for outboard motor
US5305603A (en) * 1992-02-28 1994-04-26 Mtu Motoren- Turbinen-Union Friedrichshafen Gmbh Exhaust gas duct for a row of cylinders of an internal combustion engine
US5337559A (en) * 1992-03-06 1994-08-16 Mtu Friedrichshafen Gmbh Supercharged multi-cylinder internal-combustion engine interior exhaust pipe
US5331930A (en) * 1993-04-05 1994-07-26 Mcwhorter Edward M Univalve engine
US5463867A (en) * 1993-12-14 1995-11-07 Mtu Motoren- Und Turbinen-Union Friedrichshafen Gmbh Supercharged internal combustion engine exhaust system
US5829249A (en) * 1996-01-19 1998-11-03 Outboard Marine Corporation Internal combustion engine with exhaust passage and reactor having a common wall

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2228529B1 (fr) 2009-03-13 2016-07-27 Ford Global Technologies, LLC Culasse pour moteur atmosphérique et utilisation d'une telle culasse

Also Published As

Publication number Publication date
RU2009102073A (ru) 2010-07-27
FR2902827A1 (fr) 2007-12-28
DE602007004112D1 (de) 2010-02-11
EP2032827B1 (fr) 2009-12-30
FR2902827B1 (fr) 2012-09-28
EP2032827A1 (fr) 2009-03-11
ATE453796T1 (de) 2010-01-15
ES2336629T3 (es) 2010-04-14
RU2439356C2 (ru) 2012-01-10
WO2007148000A1 (fr) 2007-12-27
JP2009541656A (ja) 2009-11-26

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Date Code Title Description
AS Assignment

Owner name: RENAULT S.A.S., FRANCE

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:DUMAS, ERIC;REEL/FRAME:022326/0340

Effective date: 20090130

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION