EP1556588B1 - Kühlungssystem einer antriebseinheit, insbesondere ein kraftfahrzeug mit einem flüssigkeit-flüssigkeit-wärmetauscher - Google Patents

Kühlungssystem einer antriebseinheit, insbesondere ein kraftfahrzeug mit einem flüssigkeit-flüssigkeit-wärmetauscher Download PDF

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Publication number
EP1556588B1
EP1556588B1 EP03782509A EP03782509A EP1556588B1 EP 1556588 B1 EP1556588 B1 EP 1556588B1 EP 03782509 A EP03782509 A EP 03782509A EP 03782509 A EP03782509 A EP 03782509A EP 1556588 B1 EP1556588 B1 EP 1556588B1
Authority
EP
European Patent Office
Prior art keywords
cooling
engine
radiator
loop
secondary loop
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.)
Expired - Lifetime
Application number
EP03782509A
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English (en)
French (fr)
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EP1556588A1 (de
Inventor
Philippe Jouanny
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.)
Valeo Systemes Thermiques SAS
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Valeo Systemes Thermiques SAS
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Publication date
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Publication of EP1556588A1 publication Critical patent/EP1556588A1/de
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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
    • F01P5/00—Pumping cooling-air or liquid coolants
    • F01P5/10—Pumping liquid coolant; Arrangements of coolant pumps
    • F01P2005/105—Using two or more pumps
    • 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
    • F01P5/00—Pumping cooling-air or liquid coolants
    • F01P5/10—Pumping liquid coolant; Arrangements of coolant pumps
    • F01P5/12—Pump-driving arrangements
    • F01P2005/125—Driving auxiliary pumps electrically
    • 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
    • F01P2050/00—Applications
    • F01P2050/02—Marine engines
    • F01P2050/06—Marine engines using liquid-to-liquid heat exchangers
    • 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
    • F01P2060/02—Intercooler
    • 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
    • F01P2060/04—Lubricant cooler
    • 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
    • F01P2060/04—Lubricant cooler
    • F01P2060/045—Lubricant cooler for transmissions
    • 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
    • F01P2060/00—Cooling circuits using auxiliaries
    • F01P2060/14—Condenser
    • 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
    • F01P2060/16—Outlet manifold

Definitions

  • the invention relates to a cooling system for a powertrain, in particular for a motor vehicle, comprising a motor, in particular a heat engine, cooled by a circulation of a cooling fluid and a cooling radiator cooled by an external atmospheric air circulation. .
  • Engines, thermal or otherwise, of motor vehicles are usually cooled by means of a cooling radiator placed at the front of the vehicle and cooled by a flow of fresh air passing through it.
  • a cooling circuit circulates a heat transfer fluid between the engine and the cooling radiator to cool the engine.
  • motor vehicles include many equipment that exchange thermal energy with their external environment.
  • This equipment is, for example, the condenser of the air conditioning circuit of the passenger compartment of the motor vehicle, a charge air radiator, a radiator for cooling the engine oil and / or the gearbox, or a radiator for cooling the fuel.
  • the air conditioning circuit of the passenger compartment of the motor vehicle comprises a heat exchanger, constituting a condenser, disposed at the front of the vehicle, in front of the cooling radiator of the engine.
  • a particular refrigerant separate from the heat transfer fluid of the engine, travels through the air conditioning circuit.
  • Special pipes are needed to connect the condenser to the evaporator which is located in the housing of the air conditioning and heating unit of the passenger compartment of the vehicle.
  • the cooling of the air is performed in an air-air heat exchanger which is arranged at the front of the vehicle and which is cooled by a circulation of air. atmospheric air.
  • each exchanger is sized to provide sufficient cooling for its own critical point that does not necessarily correspond to the critical operating conditions of other exchangers.
  • the air conditioning condenser and the charge air radiator do not operate at full speed necessarily at the same times.
  • the exchangers penalize each other by decreasing the flow rate or the air velocity available for the other radiators.
  • the air conditioning condenser placed in front of the engine cooling radiator, slows down the air flow, even when the air conditioning system is not in operation.
  • the present invention relates to a cooling system of a powertrain as mentioned above which overcomes these disadvantages.
  • the cooling system uses a unique cooling exchanger that exchanges with atmospheric air. Consequently, this radiator can be dimensioned widely and it is not penalized by the presence in front of or behind it of a number of secondary radiators of smaller size, such as the condenser of the air conditioning circuit, the air radiator of supercharger, oil cooler, etc.
  • the equipment of the vehicle to be cooled is not cooled, as in the prior art, by means of special exchangers exchanging heat directly with the outside atmospheric air, but by an exchanger connected to the secondary loop and cooled by the circulation of the cooling fluid.
  • said intermediate exchanger the heat exchange between the first and second fluid takes place, advantageously, directly, that is to say, without involving a third fluid.
  • Said intermediate exchanger is thus crossed only by the cooling fluid of the loop primary and by the cooling fluid of the secondary loop.
  • This cooling system consists of a primary loop designated by the general reference 2 and a secondary loop designated by the general reference 4.
  • the primary loop includes the engine 10 of the vehicle and a water pump 12, usually a pump mechanical, which circulates a cooling fluid through the engine block in order to evacuate excess calories.
  • a thermostatic housing 14 At the motor output, there is a thermostatic housing 14.
  • the secondary loop 4 comprises a cooling radiator 18 traversed by an outside air flow and located at the front of the vehicle.
  • the secondary loop further comprises a number of exchangers for cooling, possibly heating, various equipment of the motor vehicle.
  • the cooling system comprises a charge air cooler 22 and a condenser 24.
  • the charge air radiator 22 is intended to cool the air prior to admission into the combustion chambers of the engine. .
  • the condenser 24 is part of the air conditioning circuit of the passenger compartment of the vehicle.
  • a water pump 20, generally an electric pump, circulates the cooling fluid in the secondary loop 4. The same fluid flows in the primary loop 2 and the secondary loop 4.
  • the primary loop and the secondary loop are in heat exchange relationship with each other by an intermediate heat exchanger 26 disposed between them.
  • the engine cooling fluid after passing through the thermostatic housing 14, is conveyed via a pipe 30 to the intermediate heat exchanger 26. It emerges from the heat exchanger via a pipe 32 which returns it to the pump 12 and to the block motor 10.
  • the cooling fluid leaving the charge air cooler 22 and the condenser 24 is led through a pipe 34 in the intermediate heat exchanger 26.
  • the cooling fluid cools the cooling fluid of the primary loop.
  • the cooling fluid of the secondary loop leaves the intermediate heat exchanger via a pipe 36 which returns it to the water pump 20, then through a pipe 38 to the cooling radiator 18 in which it is cooled again.
  • the motor 10 is not cooled directly by heat exchange with the ambient atmospheric air, as is usually done, but by a liquid / liquid heat exchange in the intermediate exchanger 26. that the cooling radiator 18 is the only radiator of the cooling system of the invention.
  • the exchangers 22 and 24 are respectively air-water and freon-water exchangers which are cooled by the cooling fluid flowing in the secondary loop.
  • the radiator 18 serves both to cool the engine block 10, the charge air radiator 22 and the condenser 24. This greatly reduces the number of exchangers on the front of the vehicle compared to currently known systems. The system gains in simplicity and its size in the front face is decreased.
  • the cooling system of the invention comprises a heater pipe 40 on which is mounted a heater 42 used for heating the passenger compartment of the vehicle.
  • the pipe 40 is mounted parallel to the engine block.
  • the thermostatic housing 14 circulates a fraction of the cooling fluid leaving the engine block 10 through the heater pipe 40.
  • a cooling radiator 44 exhaust gas can be advantageously mounted on the duct heater 40.
  • the system of the invention shown on the Figure 1 further comprises an oil radiator pipe 46 on which is mounted an oil radiator 48.
  • the pipe 46 is connected to the thermostatic housing 14.
  • the oil radiator is used to cool the gearbox oil or the oil cooler. engine, or both.
  • the oil radiator 48 may be integrated in the intermediate heat exchanger 26. In this case, the oil radiator pipe 46 is eliminated.
  • the exchanger 26 is then a multi-fluid and multi-temperature exchanger. In the same way, it is possible to move the thermal control system, in other words the thermostatic housing 14, on the intermediate heat exchanger 26.
  • the cooling system comprises a bypass line 52 connected to the thermostatic housing 14 and which passes through an expansion tank 54. After passing through the expansion vessel, the cooling fluid returns to the water pump 12 without having been cooled.
  • This bypass or short circuit also called bypass (bypass)
  • bypass is used at low temperatures to promote the temperature rise of the engine.
  • the secondary loop 4 also comprises a pipe 56 connected to the inlet of the radiator 18 and at the outlet of the intermediate exchanger 26, which passes through the expansion vessel 54, which is thus an expansion vessel common to the primary loop 2 and the secondary loop 4.
  • the two loops do not are not isolated from one another and can communicate with one another via the expansion vessel 54.
  • the cooling system of the Figure 2 is distinguished by the fact that it comprises a four-way distribution valve 60 located radiator output 18.
  • the distribution valve 60 comprises an inlet channel through which the cold cooling fluid exiting the radiator 18 enters, and three outlets designated respectively by the references 60-1, 60-2 and 60-3.
  • Channel 60-1 is connected to condenser 24, track 60-2 is connected to the charge air cooler 22 and track 60-3 is connected to a short-circuit line 62 which is not on the control system. the Figure 1 .
  • the short-circuiting line 62 allows the cooling fluid of the secondary loop to avoid the exchangers 22 and 24 when this is not necessary. For example, at low engine power, it is not necessary to cool the air admitted to the engine chambers. Also, when the outside temperature is low, the air conditioning system of the cabin is not used. Thus, the entire cooling capacity of the radiator 18 is available for other functions, in particular for cooling the engine 10 of the vehicle.

Claims (9)

  1. Kühlungssystem einer Triebwerksgruppe, insbesondere für Kraftfahrzeug, mit einer insbesondere thermischen Kraftmaschine (10), die durch Zirkulation eines Kühlungsfluids gekühlt wird, und einem Kühlkörper (18), der durch Zirkulation von umgebender Atmosphärenluft gekühlt wird, wobei die Kraftmaschine (10) einen Teil einer Primärschleife (2) bildet und der Kühlkörper (18) einen Teil einer Sekundärschleife (4) bildet, wobei die Primär- und die Sekundärschleife eine unabhängige Zirkulation eines ersten und eines zweiten Kühlungsfluids derselben Art zulassen können, wobei die Primärschleife (2) und die Sekundärschleife (4) in einer gegenseitigen Wärmeaustauschbeziehung über einen Zwischentauscher (26), durch den zugleich das Kühlungsfluid der Primärschleife (2) und das Kühlungsfluid der Sekundärschleife (4) läuft, in Beziehung stehen, dadurch gekennzeichnet, dass es einen Thermoblockzweig (40) aufweist, der zwischen dem Ausgang und dem Eingang des Kraftmaschinenblocks (10) parallel angebracht ist und einen Thermoblock (42) aufweist.
  2. System nach Anspruch 1, dadurch gekennzeichnet, dass ein Kühlungstauscher (44) für Abgase in dem Thermoblockzweig (40) angebracht ist.
  3. System nach einem der Ansprüche 1 bis 2, dadurch gekennzeichnet, dass es einen Ölkühlerzweig (46) aufweist, in dem ein Ölkühler (48) für Kraftmaschinenöl und/oder Getriebeöl angebracht ist.
  4. System nach einem der Ansprüche 1 bis 2, dadurch gekennzeichnet, dass es einen in den Zwischentauscher (26) integrierten Ölkühler umfasst.
  5. System nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass die Primärschleife (2) und die Sekundärschleife (4) jeweils einen Expansionsgefäßzweig (52, 56) besitzen, der mit einem gemeinsamen Expansionsgefäß (54) verbunden ist.
  6. System nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass die Sekundärschleife (4) einen Luftüberschusskühlkörper (22) umfasst.
  7. System nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass die Sekundärschleife (4) einen Kondensator (24) umfasst, der einen Teil eines Klimatisierungskreises des Fahrzeugfahrgastraums bildet.
  8. System nach den Ansprüchen 6 und 7, dadurch gekennzeichnet, dass es ein Vierwege-Verteilungsventil (60) umfasst, wobei das Ventil (60) einen mit dem Kondensator (24) verbundenen Ausgangsweg (60-1), einen mit dem Luftüberschusskühler (22) verbundenen Ausgangsweg (60-2) und einen mit einem Kurzschlusskanal (62) verbundenen Weg (60-3) umfasst.
  9. System nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, dass es ein in den Zwischentauscher (26) integriertes Thermostatgehäuse umfasst.
EP03782509A 2002-10-29 2003-10-28 Kühlungssystem einer antriebseinheit, insbesondere ein kraftfahrzeug mit einem flüssigkeit-flüssigkeit-wärmetauscher Expired - Lifetime EP1556588B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR0213539 2002-10-29
FR0213539A FR2846368B1 (fr) 2002-10-29 2002-10-29 Systeme de refroidissement d'un moteur thermique de vehicule automobile comprenant un echangeur liquide/liquide
PCT/FR2003/003195 WO2004040105A1 (fr) 2002-10-29 2003-10-28 Systeme de refroidissement d'un groupe motopropulseur, notament de vehicule automobile, comprenant un echangeur liquide/liquide

Publications (2)

Publication Number Publication Date
EP1556588A1 EP1556588A1 (de) 2005-07-27
EP1556588B1 true EP1556588B1 (de) 2012-01-18

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EP03782509A Expired - Lifetime EP1556588B1 (de) 2002-10-29 2003-10-28 Kühlungssystem einer antriebseinheit, insbesondere ein kraftfahrzeug mit einem flüssigkeit-flüssigkeit-wärmetauscher

Country Status (5)

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EP (1) EP1556588B1 (de)
AT (1) ATE542034T1 (de)
AU (1) AU2003290146A1 (de)
FR (1) FR2846368B1 (de)
WO (1) WO2004040105A1 (de)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2420175B (en) * 2004-11-10 2009-10-28 Agco Gmbh & Co Cooling system for farming tractors
DE102010039810A1 (de) * 2010-08-26 2012-03-01 Behr Gmbh & Co. Kg Kühlsystem und Kühlverfahren für ein Fahrzeug
DE102012223069A1 (de) * 2012-12-13 2014-06-18 Bayerische Motoren Werke Aktiengesellschaft Kühlmittelkreislauf für eine Brennkraftmaschine
SE1851252A1 (en) * 2018-10-12 2019-09-13 Scania Cv Ab Cooling system and method for controlling temperature of coolant

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE384738C (de) * 1923-11-05 Norddeutsche Kuehlerfabrik G M Einrichtung zur Regelung der Temperatur des Kuehlwassers von Automobilmotoren
FR728749A (fr) * 1931-12-23 1932-07-11 Expl Des App Rotor Sa D Procédé et dispositif de refroidissement des moteurs
DE1128702B (de) * 1959-03-26 1962-04-26 Sueddeutsche Kuehler Behr Fluessigkeits-Kuehlanlage fuer Brennkraftmaschinen mit Aufladung
US3080857A (en) * 1960-12-14 1963-03-12 Int Harvester Co Engine coolant system
JPH0742856B2 (ja) * 1987-12-11 1995-05-15 株式会社クボタ 水冷エンジンの排熱回収装置
SE514537C2 (sv) * 1998-11-12 2001-03-12 Volvo Ab Förbränningsmotorinstallation i ett motorfordon
IT1308421B1 (it) * 1999-03-11 2001-12-17 Fiat Ricerche Sistema di raffreddamento per un motore a combustione interna.

Also Published As

Publication number Publication date
FR2846368A1 (fr) 2004-04-30
FR2846368B1 (fr) 2007-02-09
AU2003290146A1 (en) 2004-05-25
ATE542034T1 (de) 2012-02-15
WO2004040105A1 (fr) 2004-05-13
EP1556588A1 (de) 2005-07-27

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