EP0287450A1 - Kühlerverschlussdeckel mit Kühlkreisregelung für Brennkraftmaschine - Google Patents

Kühlerverschlussdeckel mit Kühlkreisregelung für Brennkraftmaschine Download PDF

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Publication number
EP0287450A1
EP0287450A1 EP88400874A EP88400874A EP0287450A1 EP 0287450 A1 EP0287450 A1 EP 0287450A1 EP 88400874 A EP88400874 A EP 88400874A EP 88400874 A EP88400874 A EP 88400874A EP 0287450 A1 EP0287450 A1 EP 0287450A1
Authority
EP
European Patent Office
Prior art keywords
pressure
pressure relief
relief valve
engine
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Withdrawn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
EP88400874A
Other languages
English (en)
French (fr)
Inventor
Philippe Le Gauyer
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 Chausson Thermique SA
Original Assignee
Valeo Chausson Thermique 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 Chausson Thermique SA filed Critical Valeo Chausson Thermique SA
Publication of EP0287450A1 publication Critical patent/EP0287450A1/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Withdrawn legal-status Critical Current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
    • F01P3/2207—Liquid cooling characterised by evaporation and condensation of coolant in closed cycles; characterised by the coolant reaching higher temperatures than normal atmospheric boiling-point characterised by the coolant reaching temperatures higher than the 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
    • F01P11/14—Indicating devices; Other safety devices
    • F01P11/18—Indicating devices; Other safety devices concerning coolant pressure, coolant flow, or liquid-coolant level
    • 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
    • F01P11/0204—Filling
    • F01P11/0209—Closure caps
    • 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
    • F01P11/0204—Filling
    • F01P11/0209—Closure caps
    • F01P11/0238—Closure caps with overpressure valves or vent 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
    • F01P2070/00—Details
    • F01P2070/04—Details using electrical heating elements
    • 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
    • F01P2070/00—Details
    • F01P2070/06—Using intake pressure as actuating fluid

Definitions

  • the present invention relates to the cooling circuits of heat engines, and more particularly those used in motor vehicles.
  • the cooling circuits are always fitted with pressure relief valves and, almost always, also with vacuum valves.
  • the pressure relief valves are calibrated by a spring to allow the circuit to operate under a pressure higher than atmospheric pressure, but nevertheless limited to a threshold for which the various parts of the circuit are not permanently subjected to mechanical fatigue which may be harmful. to their longevity.
  • the electric motor driving a fan pulsating air through the cooling circuit radiator is kept energized so as to cool the liquid as long as the temperature of said coolant. detected by a thermostat has not been lowered sufficiently.
  • the invention solves this problem.
  • the heat exchanger cap for regulating the pressure inside the cooling circuit of an internal combustion engine comprising at least one pressure relief valve is characterized in that the pressure relief valve is associated with means giving it a first setting threshold for normal engine operation and a second threshold when the engine is stopped.
  • the cap illustrated in FIG. 1 includes a cover 1 intended to be fixed, for example screwed by a thread 2 provided on its cylindrical part, on a base of a heat exchanger or of an expansion vessel connected to an exchanger heat.
  • the cover 1 is provided on its internal flat face with a seal 3 and internally comprises the volume delimited by the cover and from this same face, a housing 4, here tubular and coaxial with the cover 1, closed to a from its ends by a flat wall located opposite and at a distance from the internal face of said cover, said wall comprising, here perpendicularly, an opening 5, here coaxial with said housing.
  • the housing 4 makes it possible to contain, by virtue of its other open end, situated substantially in the same plane as the flat face of the cover, a spring 6, one end of which bears on the flat wall of the housing 4 and the other end of which rests on a vacuum valve 7 which, in the example illustrated, is applied against the base of a finger 8 forming part of a valve overpressure 9, said finger being inserted inside the housing 4.
  • the pressure relief valve 9 comprises, coaxially with the finger 8, a circular flange, the internal face of which is provided with a seal 11 which comes to bear on an annular seat 12 provided coaxially with the housing 4 on the top of the cover 1 .
  • the pressure relief valve 9 is provided with a light 10, for example coaxial with the opening 5, and opening beyond the finger 8 and the circular flange of said valve.
  • the pressure relief valve is surrounded by a coaxial sheath 13 projecting from the top of the cover 1 and the upper part of which is closed by a capsule 14, said sheath comprising at least one opening 15 provided on its tubular part.
  • the capsule 14 holds a cartridge 16 passing through said capsule while being coaxial with the sheath 13 and opening out inside the latter, said cartridge comprising guide parts 17 for a socket 18 against which a end of a spring 19, the other end of which bears on the pressure relief valve 9 so as to apply the latter to the annular seat 11.
  • the cartridge 16 can be constituted by different organs, in particular, it can be constituted by an element containing an expandable wax or else it can be made of a shape memory alloy or by any other device known in the art for exhibiting expansion large linear in a relatively small temperature difference.
  • the cartridge 16 is provided with an electric heating resistor 20, the supply of which from an electric current source 21 is controlled by a relay 22 which can be controlled, for example by a thermostat sensitive to the coolant temperature of an engine with a cooling heat exchanger cap described in the above.
  • the coolant is heated but, normally, the various parts of the plug always remain in the illustrated position if the pressure in the exchanger is below a threshold previously determined for normal operation.
  • the pressure applied to the valve 9, and more particularly to the flat surface of the finger 8, causes the valve 9 to be raised, leaves its seat 11, and steam escapes passing through the opening 5 and opening 15.
  • the temperature of the coolant, in its jackets and in the cooling circuit continues to increase and may exceed a previously selected threshold value.
  • This threshold value is detected by the thermostat which controls the relay 22, thereby ensuring the supply of electric current to the resistor 20.
  • the heating of the cartridge 16 causes its linear expansion and, consequently, the sleeve 18 is brought to the position 18a for which it is shown in dotted lines. In this position, the calibration due to the spring 19 is modified, here larger, since the spring 19 is compressed.
  • the pressure relief valve 9 can only be raised beyond a second pressure threshold corresponding to the new setting of the valve 9.
  • the second pressure threshold is chosen so that the pressure relief valve 9 cannot normally be lifted unless the pressure prevailing inside the heat exchanger reaches a value such that parts of this heat exchanger heat or the circuit to which it is connected may be damaged.
  • FIG. 2 illustrates a variant in which the cover 1 carries the housing 4a on its top.
  • the vacuum valve 7 is arranged as before in the housing 4.
  • the pressure valve 9 whose calibration is ensured by the spring 19 rests by its seal 11 on two annular seats 23, 24 provided here on the bottom of the sheath 13 located at a distance from the cover 1.
  • a capsule 14 closes the sheath 13.
  • a channel 25 is provided to open, here radially, inside the housing 4a and this channel is normally closed by a valve 26 which is held by a nozzle 27 defining an interior chamber 29 containing said valve and connected by a conduit 28 to engine intake.
  • the chamber 29 communicates by a conduit 30 with the space separating the two seats 23, 24 described above.
  • the valve 9 is calibrated at a first pressure threshold beyond which it is accepted that said valve can open.
  • the above operating conditions therefore correspond to those of the second pressure threshold which prevents the opening of the pressure relief valve 9, unless the pressure produced inside the exchanger reaches the second threshold above which a risk of damage would exist.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Safety Valves (AREA)
EP88400874A 1987-04-16 1988-04-12 Kühlerverschlussdeckel mit Kühlkreisregelung für Brennkraftmaschine Withdrawn EP0287450A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8705439 1987-04-16
FR8705439A FR2614071A1 (fr) 1987-04-16 1987-04-16 Procede pour la regulation du circuit de refroidissement d'un moteur thermique et bouchon pour sa mise en oeuvre

Publications (1)

Publication Number Publication Date
EP0287450A1 true EP0287450A1 (de) 1988-10-19

Family

ID=9350212

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88400874A Withdrawn EP0287450A1 (de) 1987-04-16 1988-04-12 Kühlerverschlussdeckel mit Kühlkreisregelung für Brennkraftmaschine

Country Status (2)

Country Link
EP (1) EP0287450A1 (de)
FR (1) FR2614071A1 (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0525311A1 (de) * 1991-07-20 1993-02-03 Mercedes-Benz Ag Druckgesteuerte Ventileinrichtung an dem Kühlflüssigkeitskreislauf eines Verbrennungsmotors
WO1999028606A1 (de) * 1997-12-03 1999-06-10 Heinrich Reutter Verschlussdeckel für kraftfahrzeugkühler
DE19923775A1 (de) * 1999-05-22 2000-11-23 Heinrich Reutter Verschlußdeckel für Kraftfahrzeugkühler

Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1704943A (en) * 1920-12-20 1929-03-12 Pines Winterfront Co Thermostatically-controlled power-actuated means
US1968828A (en) * 1933-03-23 1934-08-07 Maxey D Moody Automatic oil and temperature control system for motor vehicles
GB497056A (en) * 1937-06-07 1938-12-07 Raymond Noel Dorey Liquid cooling systems for internal combustion engines
US2480986A (en) * 1947-05-29 1949-09-06 Gen Motors Corp Thermostatic radiator valve
US2574254A (en) * 1944-12-28 1951-11-06 Gen Motors Corp Aircraft cooling valve
US2799260A (en) * 1955-10-13 1957-07-16 Charles R Butler Cooling system for internal combustion engines
FR2388995A1 (fr) * 1977-04-29 1978-11-24 Deere & Co Moteur a combustion interne avec systeme de refroidissement sous pression
EP0053003A1 (de) * 1980-11-22 1982-06-02 Imi Radiators Limited Wärmeaustauscher
FR2504976A1 (fr) * 1981-04-30 1982-11-05 Fuji Heavy Ind Ltd Dispositif pour commander la temperature de l'eau de refroidissement d'un moteur refroidi par eau
DE3143749A1 (de) * 1981-11-04 1983-05-11 Magirus-Deutz Ag, 7900 Ulm Vorrichtung zur absicherung des wasserdruckes im kuehlwasserkreislauf einer brennkraftmaschine
GB2155153A (en) * 1984-02-24 1985-09-18 Gilardini Spa Thermostat unit for the cooling circuit on a motor vehicle engine
EP0180208A2 (de) * 1984-10-29 1986-05-07 Bayerische Motoren Werke Aktiengesellschaft, Patentabteilung AJ-3 Drucksteuervorrichtung für den Kühlkreis von Brennkraftmaschinen

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1704943A (en) * 1920-12-20 1929-03-12 Pines Winterfront Co Thermostatically-controlled power-actuated means
US1968828A (en) * 1933-03-23 1934-08-07 Maxey D Moody Automatic oil and temperature control system for motor vehicles
GB497056A (en) * 1937-06-07 1938-12-07 Raymond Noel Dorey Liquid cooling systems for internal combustion engines
US2574254A (en) * 1944-12-28 1951-11-06 Gen Motors Corp Aircraft cooling valve
US2480986A (en) * 1947-05-29 1949-09-06 Gen Motors Corp Thermostatic radiator valve
US2799260A (en) * 1955-10-13 1957-07-16 Charles R Butler Cooling system for internal combustion engines
FR2388995A1 (fr) * 1977-04-29 1978-11-24 Deere & Co Moteur a combustion interne avec systeme de refroidissement sous pression
EP0053003A1 (de) * 1980-11-22 1982-06-02 Imi Radiators Limited Wärmeaustauscher
FR2504976A1 (fr) * 1981-04-30 1982-11-05 Fuji Heavy Ind Ltd Dispositif pour commander la temperature de l'eau de refroidissement d'un moteur refroidi par eau
DE3143749A1 (de) * 1981-11-04 1983-05-11 Magirus-Deutz Ag, 7900 Ulm Vorrichtung zur absicherung des wasserdruckes im kuehlwasserkreislauf einer brennkraftmaschine
GB2155153A (en) * 1984-02-24 1985-09-18 Gilardini Spa Thermostat unit for the cooling circuit on a motor vehicle engine
EP0180208A2 (de) * 1984-10-29 1986-05-07 Bayerische Motoren Werke Aktiengesellschaft, Patentabteilung AJ-3 Drucksteuervorrichtung für den Kühlkreis von Brennkraftmaschinen

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0525311A1 (de) * 1991-07-20 1993-02-03 Mercedes-Benz Ag Druckgesteuerte Ventileinrichtung an dem Kühlflüssigkeitskreislauf eines Verbrennungsmotors
WO1999028606A1 (de) * 1997-12-03 1999-06-10 Heinrich Reutter Verschlussdeckel für kraftfahrzeugkühler
US6435367B1 (en) 1997-12-03 2002-08-20 Heinrich Reutter Closing cap for motor vehicle radiator
DE19923775A1 (de) * 1999-05-22 2000-11-23 Heinrich Reutter Verschlußdeckel für Kraftfahrzeugkühler
WO2000071872A1 (de) * 1999-05-22 2000-11-30 Heinrich Reutter Verschlussdeckel für kraftfahrzeugkühler
EP1233158A1 (de) * 1999-05-22 2002-08-21 REUTTER, Heinrich Verschlussdeckel für Kraftfahrzeugkühler
US6729271B1 (en) 1999-05-22 2004-05-04 Heinrich Reutter Closure cap for a motor vehicle radiator

Also Published As

Publication number Publication date
FR2614071A1 (fr) 1988-10-21

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