EP0581683A1 - Kühlungseinrichung für eine Brennkraftmaschine mit einem Kondensator - Google Patents

Kühlungseinrichung für eine Brennkraftmaschine mit einem Kondensator Download PDF

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Publication number
EP0581683A1
EP0581683A1 EP93401973A EP93401973A EP0581683A1 EP 0581683 A1 EP0581683 A1 EP 0581683A1 EP 93401973 A EP93401973 A EP 93401973A EP 93401973 A EP93401973 A EP 93401973A EP 0581683 A1 EP0581683 A1 EP 0581683A1
Authority
EP
European Patent Office
Prior art keywords
condenser
fluid
outlet
pipe
way valve
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Withdrawn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
EP93401973A
Other languages
English (en)
French (fr)
Inventor
Srun Ngy Ap
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 EP0581683A1 publication Critical patent/EP0581683A1/de
Withdrawn legal-status Critical Current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
    • 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
    • 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
    • F01P3/22—Liquid cooling characterised by evaporation and condensation of coolant in closed cycles; characterised by the coolant reaching higher temperatures than normal atmospheric boiling-point
    • 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
    • F01P3/00—Liquid cooling
    • F01P3/22—Liquid cooling characterised by evaporation and condensation of coolant in closed cycles; characterised by the coolant reaching higher temperatures than normal atmospheric boiling-point
    • F01P2003/2292—Liquid cooling characterised by evaporation and condensation of coolant in closed cycles; characterised by the coolant reaching higher temperatures than normal atmospheric boiling-point with thermostatically controlled by-pass
    • 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
    • F01P7/16—Controlling of coolant flow the coolant being liquid by thermostatic control
    • F01P2007/168—By varying the cooling capacity of a liquid-to-air heat-exchanger
    • 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
    • F01P2025/00—Measuring
    • F01P2025/08—Temperature
    • F01P2025/52—Heat exchanger 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
    • F01P2060/00—Cooling circuits using auxiliaries
    • F01P2060/04—Lubricant cooler

Definitions

  • the invention relates to a device for cooling a heat engine, comprising a condenser for a coolant capable of circulating in the liquid phase and in the vapor phase, a fluid circulation pump and an expansion tank.
  • a device of this type in which a phase separator separates the liquid phase and the vapor phase from the fluid leaving the engine, the vapor phase being sent to the condenser to be condensed and cooled and the liquid phase being directed to the vessel. expansion and thence returning to the engine without passing through the condenser.
  • the fluid cooled by this known device before entering the engine, passes through a heating radiator, at least when it is necessary in winter to heat the passenger compartment of the vehicle.
  • a heating radiator At least when it is necessary in winter to heat the passenger compartment of the vehicle.
  • this fluid is condensed and cooled in the condenser to a temperature which may be too low to allow sufficient heating of the passenger compartment.
  • the object of the invention is to remedy this drawback, while maintaining the modulation of the heat flow given off by the cooling fluid in the condenser as a function of the engine load.
  • the invention relates in particular to a device of the type defined in the introduction, further comprising a three-way thermostatic valve controlled by the temperature of the fluid, operating between a first position and a second position in which, respectively, the fluid in liquid phase coming from the motor avoids the condenser, for the lowest temperatures, and passes through it, for the highest temperatures, said three-way valve being associated with a second thermostatic valve suitable for deviating a fraction from the condenser, decreasing function of the temperature of the fluid, of the fluid flow admitted by that of the tracks of the three-way valve which is connected to the condenser.
  • the adjustment of the three-way van allows a fraction of the fluid to flow through the condenser the higher the temperature of the latter. However, there is always a fraction of the fluid which does not pass through the condenser, thus avoiding excessive cooling, either that the three-way valve is out of its second position, or that it is in this position and that the second valve thermostatic in turn deflects part of the fluid out of the condenser.
  • FIGS. 1, 2 and 3 are diagrams showing the configuration of a cooling device according to the invention for different temperatures of the coolant.
  • the illustrated cooling device is intended to cool the heat engine 1 of a motor vehicle. It uses a cooling fluid which circulates between the engine 1 and a condenser 2 filled with this fluid, the latter entering the engine in the liquid phase by an inlet 3 and coming out, via an outlet 4, if necessary at least partially in vapor phase, depending on engine operating conditions.
  • a line 5 brings the fluid from the outlet 4 to a single inlet 6 of a three-way thermostatic valve 7.
  • a line 8 connects a first outlet 9 of this valve to an inlet 10 of the condenser which opens into an inlet chamber 11. After possible condensation in the condenser, the fluid leaves it through an outlet 12 opening into an outlet chamber 13.
  • a pipe 14 connects the outlet 12 to a circulation pump 15.
  • a pipe 16 brings the liquid from the pump 15 to the engine inlet 3 through a radiator for heating the passenger compartment 17.
  • a water-oil exchanger 18, used for cooling the lubricating oil of the engine 1, is interposed on a line 19 which is connected in bypass between line 16 and line 5. The flow of fluid produced by the pump 15 is therefore shared between a fraction passing through the motor 1 and a fraction passing through the exchanger 18.
  • a pipe 20 starts from a second outlet 21 of the three-way thermostatic valve and is connected to the pipe 14.
  • the valve 7 comprises a shutter member 22 which moves, as a function of the temperature of the fluid, between two extreme positions, namely a first position illustrated in the figure 1, in which it closes the outlet 9, and a second position illustrated in FIG. 3, in which it closes the outlet 21.
  • the inlet chamber 11 of the condenser also has an outlet 34 from which a pipe 35 is connected, connecting to the pipe 14.
  • a pipe 35 In this pipe 35 is interposed a thermostatic valve 36, which is fully open at low temperature and which gradually closes when the temperature of the fluid increases.
  • the shutter member 22 is in an intermediate position, as shown in FIG. 2.
  • pipe 35 and the thermostatic valve 36 can be integrated into the bulkhead of the condenser 2.
  • the illustrated device also comprises an expansion tank 23 having a variable internal volume thanks to a deformable membrane 24, this internal volume containing coolant in the liquid phase 25.
  • the expansion tank is connected by a degassing pipe 26 to line 20, and via a return line 28 to line 14, these lines 26 and 28 being lower than the expansion tank.
  • the outlet 21 of the three-way valve When the outlet 21 of the three-way valve is open, the air which can be mixed with the fluid leaving the engine can rise through line 26 and collect at 29 in the interior volume of the expansion tank; above the liquid 25. Closing the outlet 21 at high temperature prevents the passage of fluid in the vapor phase to the expansion vessel.
  • the device also comprises, in a manner known per se, a thermocontact 30 placed on the pipe 14 to control, as a function of the temperature, a fan unit 31 intended to accelerate the circulation of cooling air through the condenser 2, a thermocontact 32 placed on line 5, near outlet 4 of the engine, to signal an abnormally high temperature, and a liquid level detector 33 mounted on the bottom of the expansion tank 23 and suitable for providing a signal when it does not contain no liquid, indicating that the quantity of fluid in the cooling circuit is insufficient.
  • a thermocontact 30 placed on the pipe 14 to control, as a function of the temperature
  • a fan unit 31 intended to accelerate the circulation of cooling air through the condenser 2
  • a thermocontact 32 placed on line 5, near outlet 4 of the engine, to signal an abnormally high temperature
  • a liquid level detector 33 mounted on the bottom of the expansion tank 23 and suitable for providing a signal when it does not contain no liquid, indicating that the quantity of fluid in the cooling circuit is insufficient.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Air-Conditioning For Vehicles (AREA)
  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
EP93401973A 1992-07-29 1993-07-29 Kühlungseinrichung für eine Brennkraftmaschine mit einem Kondensator Withdrawn EP0581683A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9209409A FR2694338B1 (fr) 1992-07-29 1992-07-29 Dispositif de refroidissement d'un moteur thermique équipé d'un condenseur.
FR9209409 1992-07-29

Publications (1)

Publication Number Publication Date
EP0581683A1 true EP0581683A1 (de) 1994-02-02

Family

ID=9432423

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93401973A Withdrawn EP0581683A1 (de) 1992-07-29 1993-07-29 Kühlungseinrichung für eine Brennkraftmaschine mit einem Kondensator

Country Status (3)

Country Link
EP (1) EP0581683A1 (de)
JP (1) JPH06200759A (de)
FR (1) FR2694338B1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109815596A (zh) * 2019-01-26 2019-05-28 上海交通大学 基于温控散热器的半导体器件环境温度模拟系统及方法
EP2118463B1 (de) * 2007-02-09 2020-01-08 Volvo Lastvagnar Ab Kühlungssystem

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010014389A (ja) * 2008-07-07 2010-01-21 Mitsubishi Heavy Ind Ltd エンジン駆動式冷凍装置

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR581617A (fr) * 1923-05-18 1924-12-03 Daimler Motoren Refroidissement de l'eau par retour en arrière dans les moteurs à explosions
FR808109A (fr) * 1935-07-12 1937-01-29 Procédé de refroidissement avec vaporisation indirecte d'un réfrigérant auxiliaire
FR2481791A1 (fr) * 1980-05-05 1981-11-06 Ferodo Sa Echangeur de chaleur, en particulier pour un circuit de refroidissement d'un moteur de vehicule automobile
DE4040323A1 (de) * 1990-12-17 1992-06-25 Volkswagen Ag Thermostatventil fuer die kuehleinrichtung einer brennkraftmaschine

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR581617A (fr) * 1923-05-18 1924-12-03 Daimler Motoren Refroidissement de l'eau par retour en arrière dans les moteurs à explosions
FR808109A (fr) * 1935-07-12 1937-01-29 Procédé de refroidissement avec vaporisation indirecte d'un réfrigérant auxiliaire
FR2481791A1 (fr) * 1980-05-05 1981-11-06 Ferodo Sa Echangeur de chaleur, en particulier pour un circuit de refroidissement d'un moteur de vehicule automobile
DE4040323A1 (de) * 1990-12-17 1992-06-25 Volkswagen Ag Thermostatventil fuer die kuehleinrichtung einer brennkraftmaschine

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2118463B1 (de) * 2007-02-09 2020-01-08 Volvo Lastvagnar Ab Kühlungssystem
CN109815596A (zh) * 2019-01-26 2019-05-28 上海交通大学 基于温控散热器的半导体器件环境温度模拟系统及方法

Also Published As

Publication number Publication date
FR2694338B1 (fr) 1994-09-30
FR2694338A1 (fr) 1994-02-04
JPH06200759A (ja) 1994-07-19

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