EP2383447A2 - Circuit de refroidissement d'un moteur à combustion - Google Patents

Circuit de refroidissement d'un moteur à combustion Download PDF

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Publication number
EP2383447A2
EP2383447A2 EP11001158A EP11001158A EP2383447A2 EP 2383447 A2 EP2383447 A2 EP 2383447A2 EP 11001158 A EP11001158 A EP 11001158A EP 11001158 A EP11001158 A EP 11001158A EP 2383447 A2 EP2383447 A2 EP 2383447A2
Authority
EP
European Patent Office
Prior art keywords
cylinder
coolant
combustion engine
internal combustion
crankcase
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.)
Withdrawn
Application number
EP11001158A
Other languages
German (de)
English (en)
Other versions
EP2383447A3 (fr
Inventor
Matthias Honzen
Christoph Anton
Sebastian Riedl
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.)
Audi AG
Original Assignee
Audi 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
Application filed by Audi AG filed Critical Audi AG
Publication of EP2383447A2 publication Critical patent/EP2383447A2/fr
Publication of EP2383447A3 publication Critical patent/EP2383447A3/fr
Withdrawn legal-status Critical Current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
    • F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F1/00—Cylinders; Cylinder heads 
    • F02F1/02—Cylinders; Cylinder heads  having cooling means
    • F02F1/10—Cylinders; Cylinder heads  having cooling means for liquid cooling
    • F02F1/14—Cylinders with means for directing, guiding or distributing liquid stream
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P3/00—Liquid cooling
    • F01P3/02—Arrangements for cooling cylinders or cylinder heads
    • 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
    • F02F1/26—Cylinder heads having cooling means
    • F02F1/36—Cylinder heads having cooling means for liquid cooling
    • F02F1/40—Cylinder heads having cooling means for liquid cooling cylinder heads with means for directing, guiding, or distributing liquid stream 
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P3/00—Liquid cooling
    • F01P3/02—Arrangements for cooling cylinders or cylinder heads
    • F01P2003/027—Cooling cylinders and cylinder heads in parallel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P2060/00—Cooling circuits using auxiliaries
    • F01P2060/08—Cabin heater
    • 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
    • F02F7/00—Casings, e.g. crankcases or frames
    • F02F7/0002—Cylinder arrangements
    • F02F7/0012—Crankcases of V-engines

Definitions

  • Coolant circuit for an internal combustion engine in particular designed as a two-circuit cooling coolant circuit for internal combustion engines with at least two parallel cylinder banks, preferably in V or W design.
  • Such coolant circuits are used in internal combustion engine construction for motor vehicles for cooling assemblies of the internal combustion engine, in particular of cylinder heads and cylinder crankcases, at a different temperature level.
  • Coolant circuits for internal combustion engines with a cylinder crankcase having opposite cylinder banks are among others from the DE 103 18 744 A1 or the DE 10 2006 044 680 A1 known.
  • V-engine Coolant circuits for internal combustion engines with a cylinder crankcase having opposite cylinder banks, that is designed as a so-called "V-engine” are among others from the DE 103 18 744 A1 or the DE 10 2006 044 680 A1 known.
  • there is always a fluidic connection between the coolant jacket of the cylinder crankcase and the coolant jacket in the overlying cylinder heads so that no separate flow at different temperature levels is possible.
  • Such a dual-circuit cooling as is known from the DE 198 03 885 A1 or the JP 600 199 12 A shows, in which the cylinder crankcase and the cylinder head are internally fluidically separated from each other and involved in parallel to each other subcircuits of the coolant circuit are so far mainly used in inline engines with a single cylinder bank.
  • the generic DE 100 21 525 A1 shows, however, a cooling circuit for a multi-cylinder V-engine with a cooling jacket surrounding a cylinder head housing and a cylinder block, which is supplied via a pump with coolant, at least one cylinder cooling jacket and at least one cylinder head cooling chamber are provided with a connection for the supply of the cooling liquid and wherein the flow through the cylinder head housing and cylinder block with coolant takes place in parallel.
  • the disadvantage is that a blockage of the outflow of the cylinder cooling jacket, for faster heating of the therein cooling liquid, while cooling liquid flow through the cylinder head cooling chamber, an undesirable cooling liquid movement in the cylinder cooling jacket by cross flows to result, which slows the heating of the cylinder block.
  • the object of the present invention is therefore to provide a coolant circuit for an internal combustion engine having a plurality of cylinder banks, in which rapid heating of the coolant in the cylinder crankcase is possible independently of the coolant flow in the cylinder heads.
  • Coolant circuit for an internal combustion engine comprising a cylinder crankcase with at least two opposite cylinder banks and associated cylinder heads, wherein the cylinder crankcase and the cylinder heads are beauzzibar via separate and mutually parallel partial circuits of the coolant circuit with coolant, the coolant through a coolant pump at least temporarily between a Main turbine and the cylinder heads and / or the cylinder crankcase can be circulated and wherein in the cylinder crankcase partial circuit at least one check valve is arranged, which allows a coolant flow through the cylinder banks only from the inlet side to the outlet side.
  • the cylinder crankcase has a single coolant jacket which surrounds the two cylinder banks, so that in principle an coolant exchange between the cylinder banks is possible at any time during an induced coolant movement.
  • each cylinder bank is acted upon by its own cylinder crankcase flow with coolant, which is again discharged via a common cylinder crankcase return, wherein in the cylinder crankcase headers each a check valve is arranged, the only a flow of coolant from the cylinder crankcase heats the cylinder banks in the cylinder crankcase return allows. If the separate cylinder crankcase headers equipped with their own check valves that allow only a flow of coolant from the headers in the common return, coolant, which due to the coolant movement in the cylinder head partial circuit, for example, on a cylinder crankcase flow inlet no longer occur at the opposite cylinder crankcase flow and thus provide a cross flow between the parallel cylinder banks.
  • the cylinder crankcase return is preferably taken from the coolant jacket at a location of the cylinder crankcase which ensures a uniform flow around the cylinder chambers.
  • the coolant flow in the cylinder crankcase return from a first control valve is adjustable.
  • the first control valve By the first control valve, the cylinder crankcase partial circuit, preferably in the warm-up phase, be shut off to achieve rapid heating of the cylinder crankcase.
  • the first control valve is designed as a continuously variable control valve, so that a continuous adjustment of the coolant temperature in the cylinder crankcase is possible.
  • the first control valve arranged in the cylinder crankcase return line can thus generate "stagnant" coolant in the cylinder crankcase, if required, without creating cross flows between the cylinder banks.
  • each cylinder head has its own cylinder head lead and own cylinder head return, wherein the cylinder crankcase headers and the cylinder head headers at a branch point downstream of the coolant pump from a common flow section split and wherein the cylinder crankcase return and the cylinder head returns at a junction downstream of the first control valve in a common return section are merged again.
  • the cylinder heads assigned to the cylinder banks of the cylinder crankcase form structurally separate units and are therefore supplied centrally and in parallel with coolant from the coolant pump in the cylinder head subcircuit through its own cylinder head headers and cylinder head returns.
  • the cylinder head foreruns branch together with the cylinder crankcase pre-runs at a branch point from a common flow section having the coolant pump.
  • the coolant flows from the cylinder head recirculation and the central cylinder crankcase return flow after flowing through the corresponding subcircuits and the components contained therein at a junction again in a common return section together.
  • the common return section leads on the input side to the main heat exchanger, while the common flow section on the opposite side on the output side of the main heat exchanger.
  • a second control valve is arranged in the common flow section between the main heat exchanger and coolant pump, in addition to a branch of the common return section, bypassing the main heat exchanger, opens. Due to the branch, the main heat exchanger can be bypassed if necessary with appropriate position of the second control valve. In this so-called bypass mode, a coolant flow in the cylinder heads, and in dependence of the first control valve in the cylinder crankcase, is possible without the heated coolant is cooled in the main heat exchanger. This allows a particularly rapid and uniform heating of the internal combustion engine at an elevated temperature level.
  • the second control valve may direct the coolant through the main heat exchanger by closing the branch.
  • a second control valve in this case is preferably a continuously controllable control valve and more preferably a map thermostat, which can be energized when needed for map change.
  • the coolant circuit described does not extend exclusively to the examples set forth; in particular, further heat exchangers can be added as desired in further sub-circuits.
  • connection of a known ventilation system is provided with a surge tank to the coolant circuit.
  • FIG. 1 shows a schematic view of a coolant circuit according to the invention.
  • a coolant circuit 1 for an internal combustion engine 2 has a main heat exchanger 8 for heat exchange between the surrounding air flowing around it and the coolant flowing through it from the coolant circuit 1, and a coolant pump 7 for generating a coolant circulation in the coolant circuit 1.
  • the internal combustion engine 2 consists essentially from a cylinder crankcase 3, which contains the displacements of the working cylinder in two parallel and opposite cylinder banks 3a and 3b and is penetrated by a single coolant jacket, and the cylinder banks 3a and 3b associated cylinder heads 4a and 4b, which are essentially the gas exchange devices for accommodate the working cylinder and also penetrated by a coolant jacket.
  • the coolant jackets of the cylinder heads 4a and 4b and the cylinder crankcase 3 are not internally fluidly connected, but incorporated into separate and mutually parallel partial circuits 5 and 6 of the coolant circuit 1.
  • each cylinder head 4a and 4b, as well as each cylinder bank 3a and 3b of the cylinder crankcase 3 via its own flow connection 6a and 5a, which can be acted upon by a coolant flow pump 7 containing the common flow section 14 with coolant.
  • the cylinder crankcase 3 has a single cylinder crankcase return 5 b, which arises from the filled by the cylinder crankcase forerunning 5a coolant jacket of the cylinder crankcase 3.
  • the cylinder heads 4a and 4b have their own cylinder head returns 6b, which meet at a junction 13 with the cylinder crankcase return 5b and merge into the common return section 15.
  • the common return section 15 extends to the input side of the main heat exchanger 8, while the common flow section 14 from the output side of the main heat exchanger 8 springs.
  • the common flow section 14 contains, in addition to the central coolant pump 7, a second control valve 11 arranged upstream of the coolant pump 7, which is additionally contacted by a branch 16 branching off from the common return section 15, bypassing the main heat exchanger 8.
  • the second control valve 11 is designed as an energizable map thermostat, which closes the branch 16 in response to variable by means of energizationdeffentemperaturschwell tone and passes the coolant through the main heat exchanger 8. Otherwise, the coolant is passed via the branch 16 on the main heat exchanger 8 to the coolant pump 7.
  • the cylinder crankcase return 5b is a, designed as a continuously variable ball valve, first control valve 10 through which the cylinder crankcase return 5b is shut off if necessary.
  • the cylinder crankcase headers 5a are located at the beginning of the cylinder banks 3a and 3b check valves that allow only a flow of coolant from the cylinder crankcase advances 5a in the direction of the cylinder crankcase return 5b.
  • a quantity of coolant entering one of the two cylinder banks 3a or 3b through one of the cylinder crankcase forerunners 5a may have a corresponding amount of coolant on the opposite cylinder bank 3b or 3a do not push back again into the respective cylinder crankcase flow 5a.
  • An undesirable transverse flow between the cylinder banks 3a and 3b is thus prevented.
  • a heating circuit 17 with a heating heat exchanger 18 therein for heating ambient air for a vehicle interior departing the upstream of the coolant pump 7 and downstream of the second control valve 11 opens into the common flow section 14 again.

Landscapes

  • 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)
EP11001158.2A 2010-04-28 2011-02-12 Circuit de refroidissement d'un moteur à combustion Withdrawn EP2383447A3 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102010018624.4A DE102010018624B4 (de) 2010-04-28 2010-04-28 Kühlmittelkreislauf für eine Brennkraftmaschine

Publications (2)

Publication Number Publication Date
EP2383447A2 true EP2383447A2 (fr) 2011-11-02
EP2383447A3 EP2383447A3 (fr) 2017-07-05

Family

ID=44454698

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11001158.2A Withdrawn EP2383447A3 (fr) 2010-04-28 2011-02-12 Circuit de refroidissement d'un moteur à combustion

Country Status (5)

Country Link
US (1) US8567357B2 (fr)
EP (1) EP2383447A3 (fr)
KR (1) KR101196531B1 (fr)
CN (1) CN102235225B (fr)
DE (1) DE102010018624B4 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3050233A1 (fr) * 2016-04-19 2017-10-20 Renault Sas Systeme de refroidissement d'un moteur thermique

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9677456B2 (en) * 2014-05-13 2017-06-13 Ferrari S.P.A. Vehicle driven by an internal combustion engine and provided with a liquid cooling system
JP6048451B2 (ja) * 2014-06-04 2016-12-21 トヨタ自動車株式会社 内燃機関の制御装置
JP6225931B2 (ja) * 2015-02-20 2017-11-08 トヨタ自動車株式会社 内燃機関の冷却装置
DE102016011070A1 (de) 2016-09-14 2018-03-15 Audi Ag Verfahren zum Betreiben einer Antriebseinrichtung sowie entsprechende Antriebseinrichtung
FR3086976B1 (fr) * 2018-10-09 2020-09-25 Renault Sas Systeme de refroidissement pour moteur a combustion interne et procede de pilotage associe

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6019912A (ja) 1983-07-11 1985-02-01 Daihatsu Motor Co Ltd 内燃機関の冷却装置
DE19803885A1 (de) 1998-01-31 1999-08-05 Bayerische Motoren Werke Ag Kühlkreisanordnugn für eine flüssigkeitsgekühle Brennkraftmaschine
DE10021525A1 (de) 2000-05-03 2001-11-15 Porsche Ag Kühlkreislauf für eine mehrzylindrige Brennkraftmaschine
DE10318744A1 (de) 2003-04-25 2004-11-18 Audi Ag Kühlsystem
DE102006044680A1 (de) 2006-09-21 2008-04-10 GM Global Technology Operations, Inc., Detroit Verbrennungsmotor mit Turboladernachlaufkühlung

Family Cites Families (11)

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Publication number Priority date Publication date Assignee Title
JP2724608B2 (ja) * 1989-02-17 1998-03-09 三信工業株式会社 船舶用ｖ型２サイクル内燃機関の水冷装置
US5497734A (en) * 1993-12-22 1996-03-12 Nissan Motor Co., Ltd. Cooling system for liquid-cooled engine
JP3872151B2 (ja) 1996-12-27 2007-01-24 富士重工業株式会社 水冷式エンジンの冷却装置
DE10061546B4 (de) * 2000-12-11 2011-07-21 Behr Thermot-tronik GmbH, 70806 Kühlanlage für einen mit flüssigem Kühlmittel gekühlten Verbrennungsmotor eines Kraftfahrzeuges
DE10127219A1 (de) 2001-05-23 2002-11-28 Behr Thermot Tronik Gmbh Kühlanlage für einen Verbrennungsmotor
WO2005024214A2 (fr) * 2003-09-09 2005-03-17 Avl List Gmbh Bloc-cylindres pour moteur a combustion interne refroidi par eau
SE525988C2 (sv) * 2003-10-24 2005-06-07 Volvo Lastvagnar Ab Kylsystem för en i ett fordon monterad förbränningsmotor
DE102004012372A1 (de) * 2004-03-13 2005-09-29 Daimlerchrysler Ag Kühlkreislauf für eine kühlmittelgekühlte Brennkraftmaschine
JP2009524763A (ja) * 2006-01-27 2009-07-02 ビーエーエスエフ ソシエタス・ヨーロピア 内燃機関を液体冷却するための装置、並びにこの装置を製造するための方法
EP1947308B1 (fr) * 2007-01-17 2009-09-30 Ford Global Technologies, LLC Système de refroidissement de moteur intégré
US20090007775A1 (en) * 2007-03-07 2009-01-08 Seymour John C Engine for Aeronautical Applications II

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6019912A (ja) 1983-07-11 1985-02-01 Daihatsu Motor Co Ltd 内燃機関の冷却装置
DE19803885A1 (de) 1998-01-31 1999-08-05 Bayerische Motoren Werke Ag Kühlkreisanordnugn für eine flüssigkeitsgekühle Brennkraftmaschine
DE10021525A1 (de) 2000-05-03 2001-11-15 Porsche Ag Kühlkreislauf für eine mehrzylindrige Brennkraftmaschine
DE10318744A1 (de) 2003-04-25 2004-11-18 Audi Ag Kühlsystem
DE102006044680A1 (de) 2006-09-21 2008-04-10 GM Global Technology Operations, Inc., Detroit Verbrennungsmotor mit Turboladernachlaufkühlung

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3050233A1 (fr) * 2016-04-19 2017-10-20 Renault Sas Systeme de refroidissement d'un moteur thermique
EP3236041A1 (fr) * 2016-04-19 2017-10-25 Renault s.a.s Système de refroidissement d'un moteur thermique

Also Published As

Publication number Publication date
DE102010018624B4 (de) 2015-12-17
CN102235225A (zh) 2011-11-09
KR20110120212A (ko) 2011-11-03
US20110265741A1 (en) 2011-11-03
KR101196531B1 (ko) 2012-11-01
US8567357B2 (en) 2013-10-29
EP2383447A3 (fr) 2017-07-05
CN102235225B (zh) 2015-06-17
DE102010018624A1 (de) 2011-11-03

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