EP1280984A1 - Circuit de refroidissement pour moteur a combustion interne multicylindre - Google Patents

Circuit de refroidissement pour moteur a combustion interne multicylindre

Info

Publication number
EP1280984A1
EP1280984A1 EP01915423A EP01915423A EP1280984A1 EP 1280984 A1 EP1280984 A1 EP 1280984A1 EP 01915423 A EP01915423 A EP 01915423A EP 01915423 A EP01915423 A EP 01915423A EP 1280984 A1 EP1280984 A1 EP 1280984A1
Authority
EP
European Patent Office
Prior art keywords
cooling
cylinder
cylinder head
chamber
connection
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Withdrawn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
EP01915423A
Other languages
German (de)
English (en)
Inventor
Manfred Batzill
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.)
Dr Ing HCF Porsche AG
Original Assignee
Dr Ing HCF Porsche 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 Dr Ing HCF Porsche AG filed Critical Dr Ing HCF Porsche AG
Publication of EP1280984A1 publication Critical patent/EP1280984A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • F02B75/00—Other engines
    • F02B75/16—Engines characterised by number of cylinders, e.g. single-cylinder engines
    • F02B75/18—Multi-cylinder engines
    • F02B75/22—Multi-cylinder engines with cylinders in V, fan, or star arrangement
    • 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
    • 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
    • F01P11/00—Component parts, details, or accessories not provided for in, or of interest apart from, groups F01P1/00 - F01P9/00
    • F01P11/02—Liquid-coolant filling, overflow, venting, or draining devices
    • F01P11/029—Expansion reservoirs
    • 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
    • F01P11/00—Component parts, details, or accessories not provided for in, or of interest apart from, groups F01P1/00 - F01P9/00
    • F01P11/04—Arrangements of liquid pipes or hoses
    • 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
    • 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
    • F01P2070/00—Details
    • 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
    • F01P7/00—Controlling of coolant flow
    • F01P7/14—Controlling of coolant flow the coolant being liquid
    • F01P7/16—Controlling of coolant flow the coolant being liquid by thermostatic control
    • 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
    • F02B75/00—Other engines
    • F02B75/16—Engines characterised by number of cylinders, e.g. single-cylinder engines
    • F02B75/18—Multi-cylinder engines
    • F02B2075/1804—Number of cylinders
    • F02B2075/1832—Number of cylinders eight

Definitions

  • the invention relates to a cooling circuit and a method for operating a cooling circuit for a multi-cylinder internal combustion engine according to the features of the preambles of the two main claims.
  • Such a cooling circuit system is known for example from EP 0 816 651 AI. It describes a cooling circuit for an internal combustion engine, in which the entire coolant flow is first passed through the cylinder head housing before it subsequently flows through the cylinder block. So that the catalytic converter arranged in the exhaust system reaches its operating temperature as quickly as possible after a cold start, the control of the cooling circuit is designed so that below a coolant temperature Tl only coolant flows through the cylinder head housing and when Tl is reached the coolant is also passed through the cylinder block.
  • the invention is based on the object, using simple means, of realizing a coolant flow distribution that is appropriate to the different temperature conditions in the cylinder block and in the cylinder head of the internal combustion engine.
  • the needs-based coolant flow distribution is matched by the cross-sections of the connections and / or by the flow resistances in the cooling jackets or cooling rooms so that approx. 70 to 80% of the coolant flow circulated for engine cooling gets through the high-temperature-loaded cylinder head housing, while 20 to 30% for the cooling of the cylinder block is available.
  • the coolant flows through the cylinder head housing in an advantageous manner; this cools all cylinder head units optimally and evenly. Distortions or component stresses in the cylinder head caused by temperature differences are reduced, a higher knock limit is reached, which in turn allows the internal combustion engine to be compressed to a higher degree.
  • connection for the cylinder head cooling space is connected to a longitudinal coolant channel, which distributes the coolant evenly to the individual cylinder head units via inlet openings provided on the longitudinal coolant channel.
  • the cooling circuit system according to the invention can be realized in a simple and space-saving manner in that a connection for the cylinder cooling jacket and a connection for a cylinder head cooling chamber are provided on one end face of a row of cylinders, while the cooling channels of the cylinder cooling jacket and the cylinder head cooling chamber are provided on the other end face open common exit into a return chamber. It has been shown that it is sufficient for cooling the cylinder blocks if the cooling jacket for the cylinder block is formed only in the upper region of the cylinder running surfaces. The measure contributing to further weight reduction increases the efficiency of the internal combustion engine and nevertheless ensures the necessary cooling of the temperature-stressed components of the internal combustion engine.
  • FIG. 2 is a front view of the internal combustion engine designed as a V engine
  • FIG. 3 shows a section along the line HI-HI in FIG. 2,
  • FIG. 4 shows a section along the line IV-IV in FIG. 2 and FIG. 5, 6 two plan views of a partial section of the internal combustion engine.
  • the V8 engine shown in Fig.l consists of a crankcase lower part 10 and a crankcase upper part 12, in which two rows of cylinders 1 to 4 and 5 to 8 are arranged in a V-shape to each other.
  • a cylinder head housing 14 connects to the crankcase upper part 12 for each row of cylinders.
  • the construction of both rows of cylinders is identical, only the cylinder head housing 14 for cylinder rows 1 to 4 (in the view on the left) being shown in FIG.
  • Both rows of cylinders have cylinder cooling jackets 16 and 18 surrounding the cylinder running surfaces, the cylinder cooling jackets 16, 18 being assigned only to the upper region of the cylinder running surfaces; the length I of the cylinder cooling jackets 16, 18 amounts to approximately 1/2 the total length of the individual cylinders or Cylinder liners.
  • the slot-like openings 24 arranged on the end face of the cylinder cooling jackets 16, 18 are closed with the aid of a cylinder head gasket (not shown).
  • Cold rooms 20, 22 are arranged in the cylinder head housing 14.
  • the cooling chamber cross section 22 has been shown for the right row of cylinders (cylinders 5 to 8).
  • the spiral-shaped housing 26 of a water pump is arranged between the two rows of cylinders, the cover part of the water pump, not shown, receiving the turbine wheel driven via the crankshaft for generating the coolant flow.
  • a structural unit 27 is provided which, among other things, has a return chamber 28 which, as will be described in more detail later, forms the return for the coolant from the cylinder cooling jackets 16, 18 and the cylinder head cooling chambers 20, 22.
  • the pressure-side outlet 30 of the water pump housing 26 is connected to a coolant distributor pipe 34 via a coolant pipe 32, which extends between the two rows of cylinders to the other end of the internal combustion engine.
  • the coolant distributor pipe 34 has two connections 36, 38 for each row of cylinders, which are shown in FIG. 1 only for the right row of cylinders (cyl. 5-8).
  • the first connecting pieces 36 are connected to the longitudinally flowed cooling jackets 16, 18 arranged in the cylinder block, while the second connecting pieces 38 are connected to outer longitudinal coolant channels 40, 41 cast into the crankcase upper part 12.
  • the outer longitudinal coolant channels 40, 41 have inlet openings 47 assigned to the individual cylinder head units, via which the coolant is guided into the cylinder head cooling chambers 20, 22.
  • the structural unit 27 has, in addition to the return chamber 28, a second return chamber 56 which communicates with the first return chamber 56 and the suction port 31 of the pump housing via an opening 54 regulated by a first valve plate 51 of a thermostat 52 26 communicates.
  • the assembly 27 consisting of the two return chambers 28 and 56 and the thermostat 52 is constructed in two parts, the lower part of the assembly 27 being cast together with the pump housing 26 in the crankcase upper part 12 between the two cylinder banks.
  • the housing cover 66 of the assembly 27 receiving the thermostat 52 is screwed to the lower part of the assembly 27.
  • the second valve plate 53 of the thermostat 52 controls a return opening 58 leading to the second return chamber 56, the connection 59 connected to the first return chamber 28 forming the flow and the connection 61 connected to the second return chamber 56 forming the return of a coolant circuit, not shown in any more detail.
  • the second return chamber 56 is further connected to the return line 60 of a heating circuit, not shown, and a line 62 leading to an expansion tank. Starting from the first return chamber 28, a line 64 forms the heating flow.
  • the coolant circuit activated in the engine warm-up phase hereinafter referred to as the small coolant circuit, works as follows:
  • the opening 54 between the first return chamber 28 and the second return chamber 56 is opened through the first valve plate 51 of the thermostat 52 (see FIG. 4), so that the coolant passes from the first return chamber 28 into the second return chamber 56. From there, it is conveyed into the coolant pipe 32 via the intake port 31 of the water pump housing 26 and via the coolant distributor pipe 34 to the cylinder cooling jackets 16 arranged in the cylinder block, 18 and via the outer longitudinal coolant channels 40, 41 to the cylinder head cooling chambers 20, 22 arranged in the cylinder head housing 14.
  • a throttle 50 is provided in the cylinder cooling jackets 16, 18, with the aid of which the flow resistance is adjusted in such a way that 70 to 80%, preferably 75%, of the coolant stream circulated for engine cooling passes into the cylinder head housing 14 via the outer longitudinal coolant channels 40, 41 ,
  • the specified percentage distribution of the coolant flow ensures that the cylinder head housing 14 and the cylinder block, which are subjected to high temperatures, are cooled as required.
  • a switch is made to a large coolant circuit, in which, as is known, the cooler circuit is also included.
  • the opening 54 is closed by the first valve plate 51 of the thermostat 52, while the opening 58 controlled by the second valve plate 53 is released to the cooler circuit.
  • This activates the cooler circuit, in which the coolant, after it has passed through the small coolant circuit, reaches the second return chamber 56 via the supply connection 59, the cooler (not shown) and the return connection 61.

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)

Abstract

L'invention concerne un circuit de refroidissement ainsi qu'un procédé d'utilisation d'un circuit de refroidissement destiné à un moteur à combustion interne multicylindre. Ledit moteur à combustion interne comporte une chemise de refroidissement (16, 18, 20, 22) entourant un carter de tête de cylindre (14) et un bloc-cylindres, ladite chemise de refroidissement étant alimentée en liquide de refroidissement au moyen d'une pompe. Selon l'invention, la chemise de refroidissement de cylindre (16, 18) et la chambre de refroidissement de tête de cylindre (20, 22) sont pourvues d'un raccord (36, 38) destiné à l'alimentation du liquide de refroidissement, et la circulation de liquide de refroidissement dans le carter de tête de cylindre (14) et le bloc-cylindres est effectuée de manière parallèle. Ainsi, il est possible de mettre en oeuvre un refroidissement adapté du bloc-cylindres et de la tête de cylindre sans dispositifs de commandes supplémentaires. Le moteur atteint rapidement sa température de fonctionnement, par conséquent, la phase de marche à froid est réduite et la consommation de carburant et les émissions brutes sont diminuées.
EP01915423A 2000-05-03 2001-03-29 Circuit de refroidissement pour moteur a combustion interne multicylindre Withdrawn EP1280984A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10021525 2000-05-03
DE10021525A DE10021525A1 (de) 2000-05-03 2000-05-03 Kühlkreislauf für eine mehrzylindrige Brennkraftmaschine
PCT/EP2001/003607 WO2001083958A1 (fr) 2000-05-03 2001-03-29 Circuit de refroidissement pour moteur a combustion interne multicylindre

Publications (1)

Publication Number Publication Date
EP1280984A1 true EP1280984A1 (fr) 2003-02-05

Family

ID=7640638

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01915423A Withdrawn EP1280984A1 (fr) 2000-05-03 2001-03-29 Circuit de refroidissement pour moteur a combustion interne multicylindre

Country Status (5)

Country Link
US (1) US6745728B2 (fr)
EP (1) EP1280984A1 (fr)
JP (1) JP2003532016A (fr)
DE (1) DE10021525A1 (fr)
WO (1) WO2001083958A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106194382A (zh) * 2015-06-01 2016-12-07 福特全球技术公司 内燃发动机和冷却剂泵

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10232910B4 (de) * 2002-07-19 2005-08-04 Dr.Ing.H.C. F. Porsche Ag Wassergekühlte mehrzylindrige Brennkraftmaschine
DE10237664A1 (de) 2002-08-16 2004-02-19 Dr.Ing.H.C. F. Porsche Ag Zylinderkopf für eine wassergekühlte mehrzylindrige Brennkraftmaschine
WO2009143866A1 (fr) * 2008-05-31 2009-12-03 Fev Motorentechnik Gmbh Dispositif de refroidissement, circuit de refroidissement et procédé de refroidissement pour un moteur à combustion interne
DE102010018624B4 (de) 2010-04-28 2015-12-17 Audi Ag Kühlmittelkreislauf für eine Brennkraftmaschine
DE102010045217A1 (de) 2010-09-13 2012-03-15 Audi Ag Kühlmittelkreislauf für eine Brennkraftmaschine
DE102012200527A1 (de) * 2012-01-16 2013-07-18 Bayerische Motoren Werke Aktiengesellschaft Brennkraftmaschine mit zumindest drei Zylindern
DE102017108673A1 (de) * 2017-04-24 2018-10-25 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Anordnung eines Kühlmittelausgleichsbehälters in einem Motorraum eines Kraftfahrzeugs
US10428705B2 (en) 2017-05-15 2019-10-01 Polaris Industries Inc. Engine
US10550754B2 (en) * 2017-05-15 2020-02-04 Polaris Industries Inc. Engine
USD904227S1 (en) 2018-10-26 2020-12-08 Polaris Industries Inc. Headlight of a three-wheeled vehicle

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DE19803885A1 (de) * 1998-01-31 1999-08-05 Bayerische Motoren Werke Ag Kühlkreisanordnugn für eine flüssigkeitsgekühle Brennkraftmaschine

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GB542009A (en) * 1940-06-18 1941-12-22 Arthur John Rowledge Improvements in or relating to liquid-cooling systems for sleevevalve internal-combustion engines
GB646201A (en) * 1947-05-02 1950-11-15 Thornycroft John I & Co Ltd Improvements in or relating to cooling systems for internal combustion engines
GB1468508A (en) * 1973-04-12 1977-03-30 Perkins Engines Ltd Engine cooling system
JPS6019912A (ja) 1983-07-11 1985-02-01 Daihatsu Motor Co Ltd 内燃機関の冷却装置
JP2950879B2 (ja) * 1990-01-31 1999-09-20 ヤマハ発動機株式会社 内燃エンジンの冷却装置
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JPH06212970A (ja) * 1992-12-25 1994-08-02 Mazda Motor Corp エンジンの冷却装置
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FR2750164B1 (fr) 1996-06-24 1998-09-11 Peugeot Dispositif de refroidissement d'un moteur a combustion interne
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Title
See also references of WO0183958A1 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106194382A (zh) * 2015-06-01 2016-12-07 福特全球技术公司 内燃发动机和冷却剂泵
CN106194382B (zh) * 2015-06-01 2021-05-07 福特全球技术公司 内燃发动机和冷却剂泵

Also Published As

Publication number Publication date
DE10021525A1 (de) 2001-11-15
US20020162520A1 (en) 2002-11-07
WO2001083958A1 (fr) 2001-11-08
US6745728B2 (en) 2004-06-08
JP2003532016A (ja) 2003-10-28

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