EP0581682A1 - Kühlungseinrichtung mit einem Kondensator für eine Brennkraftmaschine - Google Patents

Kühlungseinrichtung mit einem Kondensator für eine Brennkraftmaschine Download PDF

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Publication number
EP0581682A1
EP0581682A1 EP93401972A EP93401972A EP0581682A1 EP 0581682 A1 EP0581682 A1 EP 0581682A1 EP 93401972 A EP93401972 A EP 93401972A EP 93401972 A EP93401972 A EP 93401972A EP 0581682 A1 EP0581682 A1 EP 0581682A1
Authority
EP
European Patent Office
Prior art keywords
fluid
condenser
engine
inlet
temperature
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Withdrawn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
EP93401972A
Other languages
English (en)
French (fr)
Inventor
Ngy Srun 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 EP0581682A1 publication Critical patent/EP0581682A1/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Withdrawn legal-status Critical Current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
    • 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
    • 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
    • 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
    • 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
    • F01P2060/08—Cabin heater

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 according to the load of the engine.
  • the invention relates in particular to a device of the kind defined in the introduction, further comprising a three-way thermostatic valve controlled by the temperature of the fluid, operating between a first extreme position and a second extreme position in which, respectively, the fluid in liquid phase from the motor avoids the condenser, for the lowest temperatures, and passes through it, for the highest temperatures, and at least one intermediate position in which part of the fluid leaving the motor avoids the condenser while the other part of the fluid passes through said condenser.
  • the three-way valve 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.
  • 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 an inlet 6 of the condenser which opens into an inlet chamber 7. After possible condensation in the condenser, the fluid leaves through an outlet 8 opening into an outlet chamber 9.
  • a pipe 10 connects the outlet 8 to a first inlet 11 of a three-way thermostatic mixing valve 12.
  • Another pipe 13 connects the single outlet 14 of the valve 12 to a circulation pump 15.
  • a pipe 16 brings the liquid from the pump 15 at the inlet 3 of the engine 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 engine 1 and a fraction passing through the exchanger 18.
  • a line 20 starts from line 5 and arrives at a second inlet 21 of the three-way thermostatic valve.
  • This comprises a closure member 22 which moves, as a function of the temperature of the fluid, between two extreme positions, namely a first position illustrated in FIG. 1, in which it closes the inlet 11 and a second position illustrated in FIG. 3, in which it closes the inlet 21 for the fluid in the liquid phase while allowing the penetration of the fluid in the vapor phase by this inlet.
  • the fluid cooling which comes out is at low temperature, and the shutter member is in its first position closing the inlet 11.
  • the fluid cannot circulate in the condenser and passes entirely through the pipe 20 and through the inlet 21 of the three-way valve. This position is maintained, in the example described, up to a temperature of 88 ° C., thus allowing rapid heating of the engine.
  • the shutter member 22 is in an intermediate position, as shown in FIG. 2.
  • the shutter member 22 prohibits l input 21 of the valve to the fluid in the liquid phase but allows the fluid in the vapor phase to penetrate by the latter.
  • This vapor phase fluid mixes in the valve with the liquid phase fluid exiting the condenser and heats it somewhat, which makes it possible to maintain sufficient efficiency for the heating radiator 17.
  • 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 a cold degassing valve 27 mounted on line 5, immediately upstream of the branch of line 20, and by a return line 28 to line 13, these lines 26 and 28 being lower than the vessel expansion.
  • the valve 27 When the temperature of the fluid leaving the engine is less than 95 ° C., the valve 27 is open and allows the air which can be mixed with this fluid to rise through the pipe 26 and to collect at 29 in the interior volume of the expansion vessel, above the liquid 25.
  • the valve 27 closes to prevent the passage of fluid in the vapor phase to the expansion vessel.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Temperature-Responsive Valves (AREA)
  • Air-Conditioning For Vehicles (AREA)
EP93401972A 1992-07-29 1993-07-29 Kühlungseinrichtung mit einem Kondensator für eine Brennkraftmaschine Withdrawn EP0581682A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9209408 1992-07-29
FR9209408A FR2694337B1 (fr) 1992-07-29 1992-07-29 Dispositif de refroidissement comprenant un condenseur pour un moteur thermique.

Publications (1)

Publication Number Publication Date
EP0581682A1 true EP0581682A1 (de) 1994-02-02

Family

ID=9432422

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93401972A Withdrawn EP0581682A1 (de) 1992-07-29 1993-07-29 Kühlungseinrichtung mit einem Kondensator für eine Brennkraftmaschine

Country Status (2)

Country Link
EP (1) EP0581682A1 (de)
FR (1) FR2694337B1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2728622A1 (fr) * 1994-12-21 1996-06-28 Renault Dispositif de refroidissement par evaporation pour moteur a combustion interne
CN102817696A (zh) * 2012-09-07 2012-12-12 三一重机有限公司 工程机械冷却系统、冷却方法及挖掘机

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0182340A2 (de) * 1984-11-20 1986-05-28 Nissan Motor Co., Ltd. Kühlanlage für Fahrzeugbrennkraftmaschine
DE4040323A1 (de) * 1990-12-17 1992-06-25 Volkswagen Ag Thermostatventil fuer die kuehleinrichtung einer brennkraftmaschine

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0182340A2 (de) * 1984-11-20 1986-05-28 Nissan Motor Co., Ltd. Kühlanlage für Fahrzeugbrennkraftmaschine
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
FR2728622A1 (fr) * 1994-12-21 1996-06-28 Renault Dispositif de refroidissement par evaporation pour moteur a combustion interne
CN102817696A (zh) * 2012-09-07 2012-12-12 三一重机有限公司 工程机械冷却系统、冷却方法及挖掘机

Also Published As

Publication number Publication date
FR2694337A1 (fr) 1994-02-04
FR2694337B1 (fr) 1994-09-30

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