EP0470905B1 - Regelgehäuse zur Kühlung einer Kraftwagenmaschine - Google Patents

Regelgehäuse zur Kühlung einer Kraftwagenmaschine Download PDF

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Publication number
EP0470905B1
EP0470905B1 EP91402193A EP91402193A EP0470905B1 EP 0470905 B1 EP0470905 B1 EP 0470905B1 EP 91402193 A EP91402193 A EP 91402193A EP 91402193 A EP91402193 A EP 91402193A EP 0470905 B1 EP0470905 B1 EP 0470905B1
Authority
EP
European Patent Office
Prior art keywords
heat exchanger
wall
motor
fluid
control box
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
EP91402193A
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English (en)
French (fr)
Other versions
EP0470905A1 (de
Inventor
Hervé Couetoux
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 Thermique Moteur SA
Original Assignee
Valeo Thermique Moteur SA
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 Valeo Thermique Moteur SA filed Critical Valeo Thermique Moteur SA
Publication of EP0470905A1 publication Critical patent/EP0470905A1/de
Application granted granted Critical
Publication of EP0470905B1 publication Critical patent/EP0470905B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • 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
    • F01P11/16—Indicating devices; Other safety devices concerning coolant temperature
    • 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
    • F01P7/02—Controlling of coolant flow the coolant being cooling-air
    • F01P7/08—Controlling of coolant flow the coolant being cooling-air by cutting in or out of pumps

Definitions

  • the invention relates to a device for cooling a heat engine, in particular a motor vehicle, comprising a heat exchanger for the air cooling of a cooling fluid circulating in thermal contact with the engine, a motor-fan unit suitable for force the circulation of air in contact with the heat exchanger, and a temperature sensor in thermal contact with the coolant, inside the heat exchanger, to control the operation of the motor-fan unit depending on the temperature of the fluid.
  • the motor-fan unit serves to intensify the cooling of the cooling fluid, for example an aqueous solution of an antifreeze liquid, to prevent its temperature from becoming too high.
  • the fan is started by means of switching members when the temperature sensor detects the crossing of a threshold by the temperature of the fluid.
  • the simplest devices include a single fan driven by a single motor supplied with a single voltage. The system can then take two states, fan stopped or fan on, depending on whether the detected temperature is lower or higher than the switching threshold. More elaborate devices include a motor that can be powered directly, or through a ballast resistor, so as to rotate at two different speeds, or a four-brush motor designed to rotate at two different speeds, or two motors each driving a fan. and can be supplied in series or in parallel. These devices have three operating modes depending on the temperature of the coolant. Some devices include, in addition, an electronic variator to continuously vary the speed of the fan motor.
  • the switching members for example relays or electronic components, which ensure the putting on or off of the motor-fan unit, and if necessary the variation of its speed, under the control of the temperature detector, are away from it and the fan motor.
  • the ballast resistor when provided, this ballast resistor being placed in the cooling air stream of the heat exchanger, for its own cooling. This dispersion complicates the assembly and wiring of the device.
  • the temperature sensor is arranged projecting from a closed control unit mounted on an external wall of the heat exchanger, while being in thermal contact with the cooling fluid, inside the heat exchanger for controlling the operation of the motor-fan unit as a function of the temperature, this wall comprising an opening closed by the housing which is limited, towards the interior of the exchanger, by a heat conducting wall, the control unit containing the elements necessary for the switching of the motor-fan unit and being connected directly, by electrical conductors, to an electrical power source and to the power input terminals motor of this group as well as a resistor which can be connected in series with said motor, by means of said switching members, to ensure a speed of ro reduced tation, the ballast resistance being in contact with the coolant.
  • This device has the significant disadvantage that the resistance, which is located near the sensor, has a direct effect on the latter. In fact, in operation, the heat generated by the resistor is transmitted to the sensor, which induces an error in detecting the temperature of the fluid.
  • the object of the invention is to remedy this drawback.
  • the device comprising a heat exchanger for the air cooling of a cooling fluid circulating in thermal contact with the engine, a motor-fan unit capable of forcing the circulation of air in contact with the heat exchanger, and a temperature sensor projecting from a closed control unit mounted on an outer wall of the heat exchanger, while being in thermal contact with the coolant, inside the heat exchanger, to control the operation of the motor-fan unit as a function of the temperature of the fluid, this external wall of the exchanger comprising an opening which is closed in a sealed manner against the coolant by the control unit, the latter being limited, towards the inside of the heat exchanger, by a heat conducting wall, said housing containing the components necessary for switching of the motor-driven fan unit and being connected directly, by electrical conductors, to a source of electrical power and to the power input terminals of the motor of this group as well as a ballast resistor which can be connected in series with the motor of the motor-fan unit, by means of said switching members, to ensure a reduced speed of rotation,
  • said outer wall belongs to a fluid box defining at least one fluid chamber into which the temperature sensor penetrates.
  • the opening of the outer wall and the tubular and annular parts of the wall of the control unit have forms of substantially revolution around the same axis.
  • the heat exchanger 1 comprises a fluid box 2 defining at least one chamber 3 filled with a cooling fluid, for example an aqueous solution of an antifreeze product, and a bundle of tubes provided with 'fins 4, at least part of the tubes being in communication with the chamber 3.
  • a cooling fluid for example an aqueous solution of an antifreeze product
  • An outer wall 5 of the fluid box 2, limiting the chamber 3, has a circular opening 6, which is closed by a control unit 7, with the interposition of an annular seal 8.
  • the housing 7 is formed by a sole 9 made of a metal which is a good conductor of heat, for example aluminum, applied to the wall 5 and closing off the opening 6, and a plastic cover 10, located outside of the fluid box 2 and cooperating with the sole 9 to define a closed space 11.
  • the sole 9 has a tubular part 12, projecting inside the chamber 3 and closed at its free end, as well as an annular part 13 surrounding the part 12.
  • This annular part is formed by an internal cylindrical wall element 14 and d an external cylindrical wall element 15 interconnected by an end wall element 16 so as to delimit an annular space 17 separated from the chamber 3 and communicating with the space 11.
  • the tubular part 12 and the annular part 13 have forms of revolution around the axis of opening 6.
  • the tubular part 12 and the annular part 13 respectively contain a temperature sensor 18, for example a thermistor, and a ballast resistor 19 which are in thermal contact, via the wall of the sole 9, with the cooling fluid. contained in chamber 3, which bathes this wall.
  • the internal space 11 of the control unit 7 contains a printed circuit 20 connected to the sensor 18 and to the resistor 19, and carrying switching members such as relays 21 and electronic components 22.
  • the printed circuit 20 is also connected by conductors 23 located in the space 11 to electrical connection terminals 24 mounted on the cover 10 and projecting outside the housing.
  • terminals are intended to be connected directly, by electrical conductors, on the one hand to a power source, for example the storage battery and / or the vehicle alternator, on the other hand to the input terminals the power of the motor of a motor-fan unit, so that the motor, depending on the state of the switching members, themselves controlled by the temperature sensor 18, is supplied practically under the voltage of the source, or under reduced voltage, by being connected in series with the ballast resistor 19, or either off.
  • a power source for example the storage battery and / or the vehicle alternator
  • the annular part 13 of the sole 9 is spaced radially from the axial tubular part 12, leaving between them an annular space 25 filled with cooling fluid, which allows the heat given off by the resistor 19 not to have a significant influence on the temperature detected by the sensor 18, while allowing this heat to be removed by the fluid circulating in the annular space.
  • Means not shown may be provided to ensure rapid mounting of the control unit on the fluid box 2, for example of the bayonet type.
  • Additional connection terminals can be provided on the housing when information other than the coolant temperature, for example from an on-board computer, must be taken into account when controlling the motor-fan unit.
  • annular part of the sole of the control unit can be eliminated when the device does not include a ballast resistance.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Motor Or Generator Cooling System (AREA)
  • Cooling Or The Like Of Electrical Apparatus (AREA)

Claims (4)

  1. Kühlvorrichtung für Verbrennungsmotoren, insbesondere für Kraftfahrzeuge, mit einem Wärmetauscher (1) zur Luftkühlung eines Kühlmittels, welches in thermischem Kontakt mit dem Motor zirkuliert, mit einem Lüftersatz zum Verstärken der Luftzirkulation in Kontakt mit dem Wärmetauscher, und einem Temperaturmeßwertgeber (18), der vorspringend auf einem geschlossenen Regelgehäuse (7) befestigt ist, welches auf einer Außenwand (5) des Wärmetauschers angebracht ist, wobei der Temperaturmeßwertgeber sich in thermischem Kontakt mit dem Kühlfluid im Inneren des Wärmetauschers zur Steuerung der Funktion des Lüftersatzes in Abhängigkeit von der Temperatur des Fluids befindet und die Außenwand (5) des Wärmetauschers eine Öffnung (6) aufweist, die von dem Regelgehäuse (7) dicht gegenüber dem Kühlfluid verschlossen wird, wobei das Gehäuse, das die zur Schaltung des Lüftersatzes notwendigen Vorrichtungen (21, 22) enthält, und das mit elektrischen Leitern direkt an eine Stromversorgung und an die Anschlußklemmen für die Eingangsleistung des Motors dieses Lüftersatzes angeschlossen ist, gegenüber dem Inneren des Wärmetauschers von einer wärmeleitfähigen Wand (9) begrenzt wird, und mit einem Vorwiderstand (19), der mit dem Motor des Lüftersatzes mittels der genannten Schaltvorrichtungen zur Gewährleistung einer verminderten Drehzahl in Serie geschaltet werden kann, wobei sich der Vorwiderstand in thermischen Kontakt mit dem Kühlfluid befindet, dadurch gekennzeichnet, daß die Wand (9) einen rohrförmigen vorspringenden Abschnitt (12) zur Unterbringung des Temperaturmeßwertgebers sowie einen vorspringenden ringförmigen Abschnitt aufweist, der den rohrförmigen Abschnitt umschließt und zur Unterbringung des Vorwiderstandes dient, wobei der rohrförmige Abschnitt und der ringförmige Abschnitt, durch einen ringförmigen freien Raum (25), der mit dem Kühlmittel gefüllt ist, getrennt sind.
  2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Außenwand (5) des Wärmetauschers zu rohrförmigen Fluidkammern (2) mit mindestens einer Fluidkammer (3) gehört, in die der Temperaturmeßwertgeber eindringt.
  3. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Öffnung der Außenwand (5) des Wärmetauschers und die rohrförmigen und ringförmigen Bereiche des Regelgehäuses eine derartige Form aufweisen, daß sie im wesentlichen eine gemeinsame Drehachse besitzen.
  4. Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Schaltvorrichtungen auf einer gedruckten Schaltung (20), die sich im Regelgehäuse befindet, angebracht sind.
EP91402193A 1990-08-08 1991-08-06 Regelgehäuse zur Kühlung einer Kraftwagenmaschine Expired - Lifetime EP0470905B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9010148A FR2665727B1 (fr) 1990-08-08 1990-08-08 Dispositif de refroidissement d'un moteur thermique, boitier de commande faisant partie de ce dispositif, echangeur de chaleur et boite a fluide pour echangeur de chaleur equipes de ce boitier de commande.
FR9010148 1990-08-08

Publications (2)

Publication Number Publication Date
EP0470905A1 EP0470905A1 (de) 1992-02-12
EP0470905B1 true EP0470905B1 (de) 1995-07-19

Family

ID=9399544

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91402193A Expired - Lifetime EP0470905B1 (de) 1990-08-08 1991-08-06 Regelgehäuse zur Kühlung einer Kraftwagenmaschine

Country Status (5)

Country Link
US (1) US5174248A (de)
EP (1) EP0470905B1 (de)
DE (1) DE69111330T2 (de)
ES (1) ES2075943T3 (de)
FR (1) FR2665727B1 (de)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5359969A (en) * 1994-01-05 1994-11-01 Caterpillar Inc. Intermittent cooling fan control
US5623400A (en) * 1995-04-28 1997-04-22 Chiang; Chao-Cheng Control system for smoke exhauster
FR2734348B1 (fr) * 1995-05-18 1997-07-04 Valeo Thermique Moteur Sa Echangeur de chaleur muni d'un capteur de temperature pour vehicule automobile
US20080036567A1 (en) * 2006-08-08 2008-02-14 Steven Glassburn Method of controlling an operating temperature of existing vehicle engine cooling fan on and off cycles
DE102006041890B4 (de) * 2006-09-06 2013-05-02 Bayerische Motoren Werke Aktiengesellschaft Sensoraufnahmeeinrichtung und Kraftfahrzeug
DE102006054035A1 (de) * 2006-11-16 2008-05-21 Behr Gmbh & Co. Kg Kühler
DE102006059859A1 (de) * 2006-12-15 2008-06-19 Behr Gmbh & Co. Kg Elektrisches Bauteil einer Luftfördereinrichtung und Wärmeübertrager mit Luftfördereinrichtung, insbesondere für Kraftfahrzeuge
DE102007023407A1 (de) * 2007-05-18 2008-11-20 GM Global Technology Operations, Inc., Detroit Kraftfahrzeug mit linear geregeltem Motorgebläse
DE102007044385A1 (de) * 2007-09-17 2009-04-02 Sitronic Gesellschaft für elektrotechnische Ausrüstung mbH. & Co. KG Kühlmittelkreislauf zur Regelung der Temperatur einer Kühlflüssigkeit und Kraftfahrzeug damit
JP7239264B2 (ja) * 2017-12-04 2023-03-14 矢崎総業株式会社 車両用の回路体

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2544208A (en) * 1948-02-07 1951-03-06 Standard Thomson Corp Thermostatic control device
GB751870A (en) * 1953-02-11 1956-07-04 Vapor Heating Corp Thermostatically controlled apparatus for regulating the temperature of an internal combustion engine
GB981907A (en) * 1962-12-04 1965-01-27 Taylor John C Vehicle engine cooling systems
DE1809554A1 (de) * 1968-11-18 1970-06-11 Wood Jeffreys Ltd Vorrichtung zum UEberwachen des Fluessigkeitsstandes und der Betriebstemperatur in einem Fluessigkeitskreislauf,insbesondere fuer die Kuehlwasserkontrolle von Fahrzeugmotoren
GB1377062A (en) * 1970-11-28 1974-12-11 Lucas Industries Ltd Electrical system for use in an internal combustion engine cooling system
JPS6032006B2 (ja) * 1977-05-10 1985-07-25 トヨタ自動車株式会社 エンジン用冷却フアン装置
FR2484532B1 (fr) * 1980-06-16 1985-08-23 Peugeot Aciers Et Outillage Dispositif pour la commande des moyens de ventilation d'un moteur a combustion interne
DE3429052A1 (de) * 1984-08-07 1986-02-20 Dr.Ing.H.C. F. Porsche Ag, 7000 Stuttgart Elektrisches kuehlergeblaese
DE3711392C1 (de) * 1987-04-04 1989-01-12 Behr Thomson Dehnstoffregler Kuehleinrichtung fuer eine Brennkraftmaschine und Verfahren zur Steuerung einer solchen Kuehleinrichtung
DE3903199C1 (de) * 1989-02-03 1990-04-05 Sueddeutsche Kuehlerfabrik Julius Fr. Behr Gmbh & Co Kg, 7000 Stuttgart, De

Also Published As

Publication number Publication date
DE69111330T2 (de) 1996-01-04
ES2075943T3 (es) 1995-10-16
DE69111330D1 (de) 1995-08-24
US5174248A (en) 1992-12-29
FR2665727A1 (fr) 1992-02-14
EP0470905A1 (de) 1992-02-12
FR2665727B1 (fr) 1994-07-08

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