FR2693763A1 - Cooling circuit for internal combustion engine - uses electric heater in expansion chamber of cooling system, with control of temperature and pressure, to pressurise cooling system - Google Patents

Cooling circuit for internal combustion engine - uses electric heater in expansion chamber of cooling system, with control of temperature and pressure, to pressurise cooling system Download PDF

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Publication number
FR2693763A1
FR2693763A1 FR9209121A FR9209121A FR2693763A1 FR 2693763 A1 FR2693763 A1 FR 2693763A1 FR 9209121 A FR9209121 A FR 9209121A FR 9209121 A FR9209121 A FR 9209121A FR 2693763 A1 FR2693763 A1 FR 2693763A1
Authority
FR
France
Prior art keywords
cooling circuit
pressure
cooling system
temperature
cooling
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.)
Granted
Application number
FR9209121A
Other languages
French (fr)
Other versions
FR2693763B1 (en
Inventor
Gryz Gilbert
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.)
Automobiles Peugeot SA
Automobiles Citroen SA
Original Assignee
Automobiles Peugeot SA
Automobiles Citroen 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 Automobiles Peugeot SA, Automobiles Citroen SA filed Critical Automobiles Peugeot SA
Priority to FR9209121A priority Critical patent/FR2693763B1/en
Publication of FR2693763A1 publication Critical patent/FR2693763A1/en
Application granted granted Critical
Publication of FR2693763B1 publication Critical patent/FR2693763B1/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • F01P11/20—Indicating devices; Other safety devices concerning atmospheric freezing conditions, e.g. automatically draining or heating during frosty weather
    • 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
    • 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
    • F01P2011/205—Indicating devices; Other safety devices using heat-accumulators
    • 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
    • F01P2025/04—Pressure
    • 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
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Atmospheric Sciences (AREA)
  • Control Of Temperature (AREA)

Abstract

The cooling circuit has a vessel (4) that is connected to the principal cooling circuit (2) by a conduit (5) in which the principal coolant does not circulate. Provision is made to heat (10) the fluid in the vessel by an electric resistance element. The vessel (4) serves as an expansion chamber for the cooling circuit and has, fitted in the walls, sensors to allow regulation of the pressure and temperature in the enclosure. The electric resistance element is connected to an electrical supply via a control box (12) receiving information from the pressure and temp. sensors. ADVANTAGE - Controlled pressurisation of cooling circuit, avoiding vapour pockets, and consequent local overheating of engine.

Description

Pour élever la température d'ébullition du liquide de refroidissement d'un moteur thermique et éviter ainsi que ce liquide se mette à bouillir, on met le circuit de refroidissement sous pression.To raise the boiling point of the coolant of a heat engine and thus prevent this liquid from boiling, the cooling circuit is pressurized.

Cette mise sous pression est jusqu'à présent réalisée par une dilatation différentielle entre le liquide de refroidissement et les éléments dans lesquels il circule, et une compression de l'air restant dans le vase d'expansion. La pression apparait donc avec un certain retard par rapport à l'élévation de température du liquide; il peut par suite se former des poches de vapeur aux points les plus chauds du moteur. Ces points seront d'autant moins refroidis qu'ils sont en contact avec de la vapeur et non avec un liquide; il y a donc un risque de surchauffe locale. This pressurization has so far been achieved by differential expansion between the coolant and the elements in which it circulates, and compression of the air remaining in the expansion tank. The pressure therefore appears with a certain delay relative to the rise in temperature of the liquid; As a result, pockets of steam can form at the hottest points in the engine. These points will be all the less cooled as they are in contact with steam and not with a liquid; there is therefore a risk of local overheating.

La présente invention a pour objet un circuit de refroidissement d'un moteur thermique qui remédie à cet inconvénient. The present invention relates to a cooling circuit of a heat engine which overcomes this drawback.

Ce circuit de refroidissement est caractérisé par une enceinte qui est reliée au circuit par un conduit dans lequel le flux principal du fluide de refroidissement ne circule pas, et qui comporte des moyens pour chauffer le liquide qu'elle contient.This cooling circuit is characterized by an enclosure which is connected to the circuit by a conduit in which the main flow of the cooling fluid does not circulate, and which comprises means for heating the liquid which it contains.

En fonctionnement, l'enceinte, étant en communication avec le circuit de refroidissement, est au moins partiellement remplie de liquide. La mise en service des moyens de chauffage de l'enceinte provoque une élévation de la température du liquide jusqu'à ébullition. Cette ébullition peut etre contrôlée par- un boîtier de commande qui pilote les moyens de chauffage en fonction de la température et/ou de la pression souhaitées et prédéterminées.In operation, the enclosure, being in communication with the cooling circuit, is at least partially filled with liquid. The commissioning of the enclosure heating means causes the temperature of the liquid to rise until it boils. This boiling can be controlled by a control unit which controls the heating means as a function of the desired and predetermined temperature and / or pressure.

Si cette température et/ou cette pression sont plus élevées que celles rendues possibles lors du fonctionnement du moteur, il ne se formera pas de poche de vapeur dans le reste du circuit.If this temperature and / or pressure are higher than those made possible during engine operation, there will be no vapor pocket in the rest of the circuit.

Dans un mode de réalisation de l'invention, 1' enceinte constitue le vase d'expansion du circuit de refroidissement.In one embodiment of the invention, the enclosure constitutes the expansion tank of the cooling circuit.

On a décrit ci-après, à titre d'exemple non limitatif, un mode de réalisation du circuit de refroidissement selon l'invention, avec référence au dessin annexé dans lequel
La Figure 1 est un schéma du circuit de
refroidissement;
La Figure 2 est une vue en coupe verticale du
vase d'expansion de ce circuit.An embodiment of the cooling circuit according to the invention has been described below, by way of nonlimiting example, with reference to the appended drawing in which
Figure 1 is a diagram of the circuit
cooling;
Figure 2 is a vertical sectional view of the
expansion tank of this circuit.

A la Figure 1, on voit un moteur à combustion interne 1 dont le circuit de refroidissement est relié par une conduite 2 au radiateur 3. Une enceinte 4 est reliée par un conduit 5 au circuit de refroidissement; cette enceinte constitue le vase d'expansion de ce circuit.In FIG. 1, an internal combustion engine 1 is seen, the cooling circuit of which is connected by a pipe 2 to the radiator 3. An enclosure 4 is connected by a pipe 5 to the cooling circuit; this enclosure constitutes the expansion vessel of this circuit.

L'enceinte 4 est constituée par une enveloppe 6 qui est revetue d'un manteau d'isolant thermique 7 et est fermée par un bouchon étanche 8 muni d'une soupape de sécurité 9. A l'intérieur de l'enveloppe est disposée une résistance 10 connectée à la batterie 11 du véhicule par un boîtier de commande 12; celui-ci reçoit des informations d'une sonde de température 13 et/ou d'une sonde de pression 14. Le boîtier coupe l'alimentation de la résistance 10 lorsque la température et/ou la pression du liquide du circuit de refroidissement atteint une valeur prédéterminée.The enclosure 4 is constituted by an envelope 6 which is coated with a coat of thermal insulation 7 and is closed by a tight plug 8 provided with a safety valve 9. Inside the envelope is arranged a resistor 10 connected to the vehicle battery 11 by a control unit 12; the latter receives information from a temperature probe 13 and / or from a pressure probe 14. The housing cuts the supply of the resistor 10 when the temperature and / or the pressure of the liquid in the cooling circuit reaches a predetermined value.

Il va de soi que la présente invention ne doit pas etre considérée comme limitée au mode de réalisation décrit et représenté mais en couvre, au contraire, toutes les variantes. It goes without saying that the present invention should not be considered as limited to the embodiment described and shown, but on the contrary covers all variants.

Claims (5)

RevendicationsClaims 1. Circuit de refroidissement pour moteur thermique, caractérisé par une enceinte (4) qui est reliée au circuit (2) par un conduit (5) dans lequel le flux principal du fluide de refroidissement ne circule pas, et qui comporte des moyens (10) pour chauffer le liquide qu'elle contient.1. Cooling circuit for an internal combustion engine, characterized by an enclosure (4) which is connected to the circuit (2) by a duct (5) in which the main flow of the cooling fluid does not circulate, and which comprises means (10 ) to heat the liquid it contains. 2. Circuit de refroidissement selon la revendication 1, caractérisé en ce que l'enceinte (4) constitue le vase d'expansion du circuit de refroidissement.2. Cooling circuit according to claim 1, characterized in that the enclosure (4) constitutes the expansion tank of the cooling circuit. 3. Circuit de refroidissement selon la revendication 1 ou 2, caractérisé en ce qu'il comporte des moyens (14) pour réguler en fonction de la pression et/ou de la température le chauffage du liquide contenu dans l'enceinte (4).3. Cooling circuit according to claim 1 or 2, characterized in that it comprises means (14) for regulating as a function of the pressure and / or the temperature the heating of the liquid contained in the enclosure (4). 4. Circuit de refroidissement selon l'une des revendications 1 à 3, caractérisé en ce que les moyens de chauffage (10) sont constitués par une résistance électrique.4. Cooling circuit according to one of claims 1 to 3, characterized in that the heating means (10) consist of an electrical resistance. 5. Circuit de refroidissement selon la revendication 4, caractérisé en ce que la résistance électrique (10) est reliée à une source d'alimentation électrique (11) par un boîtier de commande (12) recevant des informations d'une sonde de température (13) et/ou d'une sonde de pression (14) placées à l'intérieur de l'enceinte (4). 5. Cooling circuit according to claim 4, characterized in that the electrical resistance (10) is connected to a source of electrical power (11) by a control unit (12) receiving information from a temperature probe ( 13) and / or a pressure probe (14) placed inside the enclosure (4).
FR9209121A 1992-07-17 1992-07-17 Improvements to the cooling circuits of internal combustion engines. Expired - Fee Related FR2693763B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR9209121A FR2693763B1 (en) 1992-07-17 1992-07-17 Improvements to the cooling circuits of internal combustion engines.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR9209121A FR2693763B1 (en) 1992-07-17 1992-07-17 Improvements to the cooling circuits of internal combustion engines.

Publications (2)

Publication Number Publication Date
FR2693763A1 true FR2693763A1 (en) 1994-01-21
FR2693763B1 FR2693763B1 (en) 1994-09-02

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FR9209121A Expired - Fee Related FR2693763B1 (en) 1992-07-17 1992-07-17 Improvements to the cooling circuits of internal combustion engines.

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FR (1) FR2693763B1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3369907A1 (en) * 2017-03-03 2018-09-05 C.R.F. Società Consortile per Azioni Cooling system for an internal combustion engine of a motor-vehicle
FR3066587A1 (en) * 2017-05-19 2018-11-23 Valeo Systemes Thermiques COOLING MODULE AND THERMAL MANAGEMENT INSTALLATION COMPRISING SUCH A MODULE
CN111727308A (en) * 2018-01-29 2020-09-29 雷诺股份公司 Degassing tank for a motor vehicle cooling circuit

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE293302C (en) *
DE305927C (en) *
FR746011A (en) * 1932-02-06 1933-05-20 Improvements to radiators for automobiles, airplanes, etc.
US4575003A (en) * 1984-05-10 1986-03-11 Hotshot Auto Products Inc. Fluid heating attachment for automobile engine cooling systems
US4591691A (en) * 1984-10-29 1986-05-27 Badali Edward A Auxiliary electric heating system for internal combustion engine powered vehicles

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE293302C (en) *
DE305927C (en) *
FR746011A (en) * 1932-02-06 1933-05-20 Improvements to radiators for automobiles, airplanes, etc.
US4575003A (en) * 1984-05-10 1986-03-11 Hotshot Auto Products Inc. Fluid heating attachment for automobile engine cooling systems
US4591691A (en) * 1984-10-29 1986-05-27 Badali Edward A Auxiliary electric heating system for internal combustion engine powered vehicles

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3369907A1 (en) * 2017-03-03 2018-09-05 C.R.F. Società Consortile per Azioni Cooling system for an internal combustion engine of a motor-vehicle
US10428783B2 (en) 2017-03-03 2019-10-01 C.R.F. Societa Consortile Per Azioni Cooling system for an internal combustion engine of a motor-vehicle
FR3066587A1 (en) * 2017-05-19 2018-11-23 Valeo Systemes Thermiques COOLING MODULE AND THERMAL MANAGEMENT INSTALLATION COMPRISING SUCH A MODULE
CN111727308A (en) * 2018-01-29 2020-09-29 雷诺股份公司 Degassing tank for a motor vehicle cooling circuit

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Publication number Publication date
FR2693763B1 (en) 1994-09-02

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