WO2002066804A1 - Device and method for cooling a heat engine control element - Google Patents
Device and method for cooling a heat engine control element Download PDFInfo
- Publication number
- WO2002066804A1 WO2002066804A1 PCT/FR2002/000560 FR0200560W WO02066804A1 WO 2002066804 A1 WO2002066804 A1 WO 2002066804A1 FR 0200560 W FR0200560 W FR 0200560W WO 02066804 A1 WO02066804 A1 WO 02066804A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- cooling
- engine
- radiator
- valve
- exchanger
- 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
- F01P3/00—Liquid cooling
- F01P3/12—Arrangements for cooling other engine or machine parts
-
- 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
- F01P3/20—Cooling circuits not specific to a single part of engine or machine
-
- 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
- F01P7/00—Controlling of coolant flow
- F01P7/14—Controlling of coolant flow the coolant being liquid
- F01P2007/143—Controlling of coolant flow the coolant being liquid using restrictions
-
- 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
- F01P2050/30—Circuit boards
-
- 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
- F01P2060/18—Heater
- F01P2060/185—Heater for alternators or generators
Definitions
- the present invention relates to a cooling device for a control member of a thermal engine of a motor vehicle, as well as to a method for permanently supplying coolant to a heat exchanger intended to cool such a member. control.
- the drive motor of motor vehicles can be cooled by circulating a coolant, in practice water, which passes through the main parts of the engine which should be cooled.
- the cooling circuit essentially includes a circulation pump driven by the engine and a radiator consisting of a water / air heat exchanger capable of cooling the water circulated by the pump.
- a thermostatic valve is also generally provided, so as to isolate the part of the main cooling circuit which contains the radiator, for the duration of the cold start where excessive cooling of the engine is not desired. The thermostatic valve opens gradually as a function of the temperature of the circulating water, heated by the engine after the start-up period.
- Cooling can for example be obtained by circulating the cooling water flowing in the main engine cooling circuit.
- the addition, without special precautions, of a heat exchanger in the main engine cooling circuit however has the disadvantage that the cooling is not done properly in a constant manner during the engine starting phases when the thermostatic valve is closed and during normal operating phases where the thermostatic valve is open.
- Another solution consisting in using an independent cooling circuit also requires an additional electric water pump and at least one solenoid valve, which complicates the overall structure and increases the cost as well as the risk of breakdowns.
- the object of the present invention is to eliminate these difficulties and to ensure the cooling of a control member of a combustion engine of a motor vehicle, for example of the valve control system, which allows constant and permanent cooling whatever or the state of the thermostatic valve.
- the object of the invention is also to continuously supply a heat exchanger with coolant from the main engine cooling circuit, regardless of the position of the thermostatic valve.
- the cooling device of the invention is intended to cooperate with a control member of a combustion engine of a motor vehicle.
- the device comprises a main circuit for the flow of a coolant passing through the engine and including a circulation pump, a thermostatic valve and a radiator.
- a heat exchanger capable of cooling the control member is mounted in a secondary circuit, downstream of the radiator, between said radiator and the circulation pump.
- a restriction is mounted in the main circuit in parallel with the exchanger. In this way, a branch of the secondary circuit connecting the exchanger to the restriction is crossed by the coolant in one direction or the other depending on whether the thermostatic valve is open or closed.
- the exchanger is supplied with coolant at a lower temperature when the thermostatic valve is open, which is the most common case.
- an aerothermal exchanger intended for heating the passenger compartment of the vehicle is also mounted in the main circuit downstream of the thermostatic valve, with its return pipe connected upstream of the restriction.
- control member is designed to act on the valves of the engine.
- the invention also relates, more generally, to a method for permanently supplying coolant to a heat exchanger mounted in a secondary circuit bypassing a main flow circuit, a part of which can be isolated by a closing valve.
- a closing valve a method for permanently supplying coolant to a heat exchanger mounted in a secondary circuit bypassing a main flow circuit, a part of which can be isolated by a closing valve.
- an inversion of the direction of flow in a branch of the secondary circuit is automatically operated as a function of the position of the closing valve, by means of a pressure drop generated in a portion of the main circuit.
- the valve closes when the temperature of the coolant reaches a determined value.
- the method of the invention is particularly advantageous when the heat exchanger is used to cool a valve control member of a heat engine, in particular in a motor vehicle.
- FIG. 1 schematically shows a cooling device according to the invention
- FIG. 2 illustrates the circulation of the coolant in the device illustrated in Figure 1, when the thermostatic valve is closed;
- FIG. 3 schematically illustrates the circulation of the coolant in the device illustrated in Figure 1, when the thermostatic valve is open. 5
- the cooling device of the invention is used in association with a heat engine shown diagrammatically by the dashed frame 1.
- the heat engine 1 is cooled by a circulation d water flowing in a main flow circuit 2 which includes a circulation pump 3, a
- the circuit 2 can be more or less filled with cooling water thanks to the existence of a filling jar 6 playing the role of a vase of expansion and mounted in diversion by conduits 7 and 8 on the air / water heat exchanger which constitutes the radiator 5.
- a filling jar 6 playing the role of a vase of expansion and mounted in diversion by conduits 7 and 8 on the air / water heat exchanger which constitutes the radiator 5.
- the cooling water conveyed by the line 9 passes through the thermostatic valve 4, the opening and closing of which are controlled by an expansion element 4a on which the temperature of the water passing through the thermostatic valve 4 acts.
- the passenger compartment of the vehicle In the example illustrated in FIG. 1, the passenger compartment of the vehicle
- a heating device including an air heater 10 in the form of an air / water heat exchanger which is supplied by the cooling water of the main circuit 2 coming directly from the thermostatic valve 4 by line 11.
- the outlet of the air heater 10 is connected via line 11 a to a
- the heat exchanger 14 receives cooling water by
- FIG. 1 The operation of the device illustrated in FIG. 1 is as follows, with reference to FIGS. 2 and 3.
- FIG. 3 illustrates the different flows in the device of the invention when the thermostatic valve 4 is completely open. In this case, all of the cooling water coming from the air heater 10 through line 1a is directed by branch 15 through restriction 16 to return via line 22 to the circulation pump 3.
- the thermostatic valve 4 being open, the cooling water also flows in line 26, passes through the radiator 5 and returns via line 27 to point 19 where the flow separates into two parts.
- the first part passes through the heat exchanger 14 via the secondary circuit 13 before returning to the circulation pump 3 via the pipe.
- the second part flows through the branch 17, crosses the restriction 16 before returning via the line 22 to the circulation pump 3.
- the circulation of water in branch 17 has therefore been reversed compared to that which existed when the thermostatic valve 4 was closed, as illustrated in FIG. 2.
- the flow rate in the radiator 5 is here maximum, as in the exchanger heat 14.
- the exchanger 14 is traversed by water which has been cooled by the radiator 5, which improves the cooling of the valve control system.
- the flow of cooling water coming from the air heater 10 continues, as illustrated in FIG. 2, but the flow of cooling water coming from the radiator 5 begins, as illustrated in FIG. 3.
- the cooling water flow begins to increase in the heat exchanger 14 and the flow gradually reverses in the branch 17. It can be seen that this inversion occurs from about 5% opening of the thermostatic valve 4.
- the device of the invention thus makes it possible to obtain an automatic tilting of the direction of flow in the branch 17 of the secondary circuit 13, the supply of cooling water to the heat exchanger 14 being done, either by water cooling from the air heater 10 or the main cooling circuit in the case where no air heater is provided, either by the cooling water coming from the radiator 5 when the thermostatic valve 4 is open.
- This automatic switchover is obtained in a way extremely simple without requiring the addition of any additional electric pump or any solenoid valve.
- the absence of a moving part or specific component eliminates all risk of failure.
- the cooling water supply to the heat exchanger 14 is done permanently and by means of water from the radiator, that is to say after cooling when the thermostatic valve is open, in operation. normal engine.
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)
- Air-Conditioning For Vehicles (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP02704825A EP1362169B1 (en) | 2001-02-19 | 2002-02-14 | Device and method for cooling a heat engine control element |
DE60214515T DE60214515T2 (en) | 2001-02-19 | 2002-02-14 | DEVICE AND METHOD FOR COOLING A CONTROL DEVICE OF AN INTERNAL COMBUSTION ENGINE |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0102225A FR2821120B1 (en) | 2001-02-19 | 2001-02-19 | DEVICE AND METHOD FOR COOLING A CONTROL UNIT OF A HEAT ENGINE |
FR01/02225 | 2001-02-19 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2002066804A1 true WO2002066804A1 (en) | 2002-08-29 |
Family
ID=8860184
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR2002/000560 WO2002066804A1 (en) | 2001-02-19 | 2002-02-14 | Device and method for cooling a heat engine control element |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP1362169B1 (en) |
DE (1) | DE60214515T2 (en) |
ES (1) | ES2266450T3 (en) |
FR (1) | FR2821120B1 (en) |
WO (1) | WO2002066804A1 (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2875885B1 (en) * | 2004-09-27 | 2006-12-01 | Renault Sas | COOLING DEVICE FOR AUTOMATIC GEARBOX OF MOTOR VEHICLE AND ASSOCIATED METHOD |
FR2883807B1 (en) * | 2005-04-01 | 2008-09-12 | Renault Sas | DEVICE AND METHOD FOR COOLING THE ENGINE AND A VEHICLE ORGAN |
ES2334616A1 (en) * | 2008-02-04 | 2010-03-12 | Universidade De Santiago De Compostela | Superconducting current limiter integrated in the heat exchanger of a thermoacoustic refrigerator |
FR2945482B1 (en) * | 2009-05-18 | 2011-05-06 | Peugeot Citroen Automobiles Sa | ADJUSTABLE RESTRICTION, CIRCUIT CIRCUIT OF A FLUID AND VEHICLE EQUIPPED WITH THIS RESTRICTION |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4180032A (en) * | 1976-02-10 | 1979-12-25 | Societe Anonyme Des Usines Chausson | Device for the regulation of the temperature of a supercharged diesel engine |
EP0446099A1 (en) * | 1990-03-05 | 1991-09-11 | Automobiles Peugeot | Compact four-way connector and its application in the cooling system of a motor vehicle |
FR2748428A1 (en) * | 1996-05-07 | 1997-11-14 | Renault | Cooling system for vehicle with hybrid propulsion |
US5701852A (en) * | 1995-08-31 | 1997-12-30 | Nippondenso Co., Ltd. | Coolant temperature control system for vehicles |
US5875746A (en) * | 1997-04-02 | 1999-03-02 | Torota Jidosha Kabushiki Kaisha | Cylinder head structure for an internal combustion engine |
-
2001
- 2001-02-19 FR FR0102225A patent/FR2821120B1/en not_active Expired - Fee Related
-
2002
- 2002-02-14 ES ES02704825T patent/ES2266450T3/en not_active Expired - Lifetime
- 2002-02-14 EP EP02704825A patent/EP1362169B1/en not_active Expired - Lifetime
- 2002-02-14 DE DE60214515T patent/DE60214515T2/en not_active Expired - Lifetime
- 2002-02-14 WO PCT/FR2002/000560 patent/WO2002066804A1/en active IP Right Grant
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4180032A (en) * | 1976-02-10 | 1979-12-25 | Societe Anonyme Des Usines Chausson | Device for the regulation of the temperature of a supercharged diesel engine |
EP0446099A1 (en) * | 1990-03-05 | 1991-09-11 | Automobiles Peugeot | Compact four-way connector and its application in the cooling system of a motor vehicle |
US5701852A (en) * | 1995-08-31 | 1997-12-30 | Nippondenso Co., Ltd. | Coolant temperature control system for vehicles |
FR2748428A1 (en) * | 1996-05-07 | 1997-11-14 | Renault | Cooling system for vehicle with hybrid propulsion |
US5875746A (en) * | 1997-04-02 | 1999-03-02 | Torota Jidosha Kabushiki Kaisha | Cylinder head structure for an internal combustion engine |
Also Published As
Publication number | Publication date |
---|---|
FR2821120B1 (en) | 2003-04-18 |
DE60214515D1 (en) | 2006-10-19 |
ES2266450T3 (en) | 2007-03-01 |
FR2821120A1 (en) | 2002-08-23 |
EP1362169A1 (en) | 2003-11-19 |
EP1362169B1 (en) | 2006-09-06 |
DE60214515T2 (en) | 2007-02-15 |
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