WO2005042939A1 - Kühlkreislauf, insbesondere für einen kraftfahrzeug-motor - Google Patents
Kühlkreislauf, insbesondere für einen kraftfahrzeug-motor Download PDFInfo
- Publication number
- WO2005042939A1 WO2005042939A1 PCT/EP2004/012313 EP2004012313W WO2005042939A1 WO 2005042939 A1 WO2005042939 A1 WO 2005042939A1 EP 2004012313 W EP2004012313 W EP 2004012313W WO 2005042939 A1 WO2005042939 A1 WO 2005042939A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- cooling circuit
- cooler
- bypass
- circuit according
- thermostat
- Prior art date
Links
Classifications
-
- 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
- F01P7/165—Controlling of coolant flow the coolant being liquid by thermostatic control characterised by systems with two or more loops
-
- 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
- F01P11/14—Indicating devices; Other safety devices
- F01P11/18—Indicating devices; Other safety devices concerning coolant pressure, coolant flow, or liquid-coolant level
-
- 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
- F01P2007/146—Controlling of coolant flow the coolant being liquid using valves
-
- 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
Definitions
- Cooling circuit in particular for a motor vehicle engine
- the invention relates to a cooling circuit, in particular for a motor vehicle engine, according to the preamble of claim 1.
- FIG. 3 An engine cooling circuit 101 according to the prior art is shown in FIG. 3.
- a motor vehicle engine 102 to be cooled a thermostat 103, a cooler 104, a coolant pump 105 and a bypass 106, the bypass branching off on the thermostat 103 before the cooler 104 and after the cooler 104 and before the coolant pump 105 is fed back to the main stream.
- a fan 107 is provided to increase the cooling capacity of the cooler 104.
- a cooling circuit in particular for a motor vehicle engine, is provided with a coolant pump and a cooler, an overpressure valve being arranged in a bypass to reduce a pressure difference between two points in the cooling circuit.
- the bypass preferably branches off shortly before the cooler and is fed back to the main flow shortly after the cooler, so that the cooler can be flowed around. Although this leads to an increased coolant temperature, this easily compensates for the increased coolant circulation quantity.
- the pressure relief valve is preferably a controlled valve. This can preferably be controlled mechanically or electronically. According to one exemplary embodiment, the valve is a spring-loaded pressure relief valve which releases the bypass to a specific pressure difference between the branch point and the return point, ie essentially the pressure difference between the cooler inlet and outlet. so that the mechanical load on the cooler and the cooling circuit components can be reduced under extreme operating conditions.
- a thermostat on which a bypass branches off directly, is preferably arranged in the cooling circuit.
- the pressure relief valve can be integrated directly into the thermostat, so that only a single bypass around the cooler has to be provided, since the bypass is released below a predetermined temperature and above a predetermined pressure difference.
- two bypasses can also be provided, one being controlled by the thermostat and one by the pressure relief valve.
- FIG. 1 is a schematic representation of a cooling circuit according to the first embodiment
- Fig. 2 is a schematic representation of a cooling circuit according to the second embodiment
- Fig. 3 is a schematic representation of a conventional cooling circuit according to the prior art.
- FIG. 1 shows an engine cooling circuit 1 of a motor vehicle engine 2 according to the first exemplary embodiment, in which coolant cools the engine 2, then passed via a thermostat 3 through a cooler 4, in which it is cooled again, to a coolant pump 5 becomes.
- a first bypass 6 is provided, the bypass 6 branching off at the thermostat 3 in front of the cooler 4 and being fed back to the main stream after the cooler 4 and before the coolant pump 5 (cf. prior art).
- a Second bypass 8 is provided, which branches off after the thermostat 3 and before the cooler 4 and is fed back to the main flow after the cooler 4.
- an overpressure valve 9 is provided which, in the event of an undesirably large drop in pressure in the cooler 4, bypasses warm coolant past the cooler 4, so that if the coolant 4 circulates around a large amount of coolant, the pressure drop in the cooler 4 can be reduced and boiling of the coolant can still be avoided at critical points in the engine circuit.
- a blower 7 is provided to increase the cooling capacity of the cooler 4.
- the second bypass 8 can also be fed to the first bypass 6, which in this case is then to be dimensioned differently.
- the pressure relief valve (not explicitly shown) is integrated directly into the thermostat 3, so that the two bypasses 6 and 8 of the first Embodiment can be replaced by a single bypass 6 ', which flows through both at a sufficiently low temperature and when the pressure drop in the cooler 4 is too high.
- the second embodiment corresponds to the first embodiment.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
- Motor Or Generator Cooling System (AREA)
- Air-Conditioning For Vehicles (AREA)
- Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP04791069A EP1689988A1 (de) | 2003-11-03 | 2004-10-29 | Kühlkreislauf, insbesondere für einen kraftfahrzeugmotor |
BRPI0416174-2A BRPI0416174A (pt) | 2003-11-03 | 2004-10-29 | circuito de refrigeração, especialmente para um motor de automóvel |
JP2006537222A JP2007510088A (ja) | 2003-11-03 | 2004-10-29 | 自動車エンジン用の冷却回路 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10351545.3 | 2003-11-03 | ||
DE2003151545 DE10351545A1 (de) | 2003-11-03 | 2003-11-03 | Kühlkreislauf, insbesondere für einen Kraftfahrzeug-Motor |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2005042939A1 true WO2005042939A1 (de) | 2005-05-12 |
Family
ID=34530112
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2004/012313 WO2005042939A1 (de) | 2003-11-03 | 2004-10-29 | Kühlkreislauf, insbesondere für einen kraftfahrzeug-motor |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP1689988A1 (de) |
JP (1) | JP2007510088A (de) |
CN (1) | CN1875176A (de) |
BR (1) | BRPI0416174A (de) |
DE (1) | DE10351545A1 (de) |
WO (1) | WO2005042939A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2008043399A1 (de) * | 2006-10-14 | 2008-04-17 | Daimler Ag | Kühlkreislauf für einen kraftwagen |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102016106759A1 (de) * | 2016-04-13 | 2017-10-19 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Kühlkreislauf und Verfahren zum Kühlen eines Kraftfahrzeugmotors |
CN105937515B (zh) * | 2016-06-30 | 2017-11-03 | 江苏金荣森制冷科技有限公司 | 带活塞式双向压力泄压阀的液压旁路的工作方法 |
DE102016009664A1 (de) | 2016-08-09 | 2018-02-15 | Daimler Ag | Kühleinrichtung für eine Verbrennungskraftmaschine, insbesondere eines Kraftfahrzeugs |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5749014A (en) * | 1980-09-09 | 1982-03-20 | Nippon Denso Co Ltd | Cooling device of engine |
US4364338A (en) * | 1978-10-31 | 1982-12-21 | Alfa Romeo S.P.A. | Circuit of the coolant in internal combustion engines for improving engine operation after cold starting |
DE19545081A1 (de) * | 1995-12-04 | 1997-06-05 | Behr Thomson Dehnstoffregler | Thermostatventil für einen Kühlkreislauf eines Verbrennungsmotors |
DE19728590A1 (de) * | 1997-07-04 | 1999-01-07 | Audi Ag | Kühlkreislauf für eine flüssigkeitsgekühlte Brennkraftmaschine |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61247819A (ja) * | 1985-04-24 | 1986-11-05 | Nissan Motor Co Ltd | 内燃機関の沸騰冷却装置 |
DE3732164A1 (de) * | 1987-09-24 | 1989-05-11 | Kloeckner Humboldt Deutz Ag | Brennkraftmaschine mit einem schmieroelkuehlkreislauf |
DE3843827A1 (de) * | 1988-12-24 | 1990-07-05 | Kloeckner Humboldt Deutz Ag | Brennkraftmaschine mit zwei hydraulischen fluessigkeitskreislaeufen |
DE4427340A1 (de) * | 1993-08-07 | 1995-02-09 | Bayerische Motoren Werke Ag | Thermostatventil |
DE29505992U1 (de) * | 1995-04-06 | 1995-06-01 | Wahler Gmbh & Co Gustav | Thermostatventil |
-
2003
- 2003-11-03 DE DE2003151545 patent/DE10351545A1/de not_active Withdrawn
-
2004
- 2004-10-29 JP JP2006537222A patent/JP2007510088A/ja active Pending
- 2004-10-29 CN CNA2004800326689A patent/CN1875176A/zh active Pending
- 2004-10-29 BR BRPI0416174-2A patent/BRPI0416174A/pt not_active IP Right Cessation
- 2004-10-29 WO PCT/EP2004/012313 patent/WO2005042939A1/de active Application Filing
- 2004-10-29 EP EP04791069A patent/EP1689988A1/de not_active Withdrawn
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4364338A (en) * | 1978-10-31 | 1982-12-21 | Alfa Romeo S.P.A. | Circuit of the coolant in internal combustion engines for improving engine operation after cold starting |
JPS5749014A (en) * | 1980-09-09 | 1982-03-20 | Nippon Denso Co Ltd | Cooling device of engine |
DE19545081A1 (de) * | 1995-12-04 | 1997-06-05 | Behr Thomson Dehnstoffregler | Thermostatventil für einen Kühlkreislauf eines Verbrennungsmotors |
DE19728590A1 (de) * | 1997-07-04 | 1999-01-07 | Audi Ag | Kühlkreislauf für eine flüssigkeitsgekühlte Brennkraftmaschine |
Non-Patent Citations (1)
Title |
---|
PATENT ABSTRACTS OF JAPAN vol. 006, no. 124 (M - 141) 9 July 1982 (1982-07-09) * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2008043399A1 (de) * | 2006-10-14 | 2008-04-17 | Daimler Ag | Kühlkreislauf für einen kraftwagen |
Also Published As
Publication number | Publication date |
---|---|
CN1875176A (zh) | 2006-12-06 |
JP2007510088A (ja) | 2007-04-19 |
EP1689988A1 (de) | 2006-08-16 |
BRPI0416174A (pt) | 2007-01-09 |
DE10351545A1 (de) | 2005-06-09 |
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