EP0374038B1 - Kühlungsanordnung einer Brennkraftmaschine - Google Patents

Kühlungsanordnung einer Brennkraftmaschine Download PDF

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Publication number
EP0374038B1
EP0374038B1 EP89403455A EP89403455A EP0374038B1 EP 0374038 B1 EP0374038 B1 EP 0374038B1 EP 89403455 A EP89403455 A EP 89403455A EP 89403455 A EP89403455 A EP 89403455A EP 0374038 B1 EP0374038 B1 EP 0374038B1
Authority
EP
European Patent Office
Prior art keywords
cooling device
chamber
valve
engine
liquid
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.)
Expired - Lifetime
Application number
EP89403455A
Other languages
English (en)
French (fr)
Other versions
EP0374038A1 (de
Inventor
Emmanuel Rupp
Jean-Claude Antoviaque
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
Publication of EP0374038A1 publication Critical patent/EP0374038A1/de
Application granted granted Critical
Publication of EP0374038B1 publication Critical patent/EP0374038B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • F01P11/02—Liquid-coolant filling, overflow, venting, or draining devices
    • F01P11/0285—Venting devices
    • 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
    • F01P11/028—Deaeration devices
    • 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 cooling circuit of an internal combustion engine must necessarily include a degassing device because one cannot ensure an absolute seal between the interior of the cylinders and the water chambers. You can degas the engine itself. However, the volume of liquid to be heated is then significantly increased as soon as the engine is started because this involves heating the liquid contained in the expansion tank as soon as it is started; the temperature rise of this engine and of its cooling circuit is therefore delayed, which increases external pollution due to the prolonged use of cold enrichment systems and, consequently, also increases fuel consumption and, in the case of a vehicle engine, interferes with heating of the vehicle interior.
  • French Patent 2,317,489 describes a liquid cooling device for an internal combustion engine which provides degassing of the cooling circuit as soon as the engine is started while minimizing the volume of the coolant to be heated after this start-up. market.
  • This cooling device comprises a main cooling circuit comprising a radiator connected to the engine by a liquid inlet pipe and a return pipe, means for circulating the liquid between the engine and the radiator, and a thermostatic valve suitable for interrupt the circulation of the liquid when the temperature thereof is below a given value, a secondary cooling circuit mounted in parallel with the main circuit and comprising a low-volume degassing chamber connected to the engine by a liquid inlet pipe and a departure excluding any valve so that liquid circulates permanently in this secondary circuit, and means for circulating the liquid between the engine and the degassing chamber, and an expansion tank connected to one of the cooling circuits.
  • Patent EP-A-0 250 734 describes a cooling device, the degassing chamber of which is located on the return line from the radiator to the engine, immediately upstream of the suction pump, tapering from its lower part to its upper part, and communicates at its upper part with the expansion tank via a small diameter pipe fitted with a non-return valve.
  • the present invention relates to a cooling device characterized in that the flow line from the degassing chamber opens into the return line of the main circuit, the expansion tank being connected directly to the main cooling circuit and in that one of the walls of the degassing chamber has an orifice connected to the expansion tank by means of a valve arranged to open when gas is present in the chamber.
  • the degassing chamber is arranged under the expansion vessel and the orifice allows direct communication between the upper part of the degassing chamber and the lower part of the expansion vessel.
  • an internal combustion engine 1 which comprises a main cooling circuit comprising a pump 2.
  • the degassing chamber 14 has a circular section and the conduits 17 and 18 are of small section, less than that of the conduits 3 and 5, and open tangentially.
  • the degassing chamber 14 is disposed under the expansion vessel 8 and adjoined to it by its upper part, the upper wall of the chamber constituting a part of the lower wall 19 of the vessel; it has a small section orifice 20 through which it can communicate directly with the expansion tank and which can be closed by a valve 21.
  • the apparent density of this valve is slightly less than or equal to the density of the coolant. It is connected at its upper part by an arm 22 to retaining arms 23 which limit its downward stroke by abutting against the partition 19.
  • the valve 6 When the cold engine starts, the valve 6 is closed, so that there is no circulation in the radiator 4.
  • the only liquid which passes through the expansion tank 8 is that which reaches it through the orifice 20
  • the pressure P in the expansion tank 8 is practically identical to the suction pressure.
  • the pressure P ′ in the chamber 14 is intermediate between the pressure in the engine before the valve 6, itself close to the discharge pressure of the pump 2, and the suction pressure of this pump.
  • the pressure P ′ in the chamber 14 is therefore greater than the pressure P in the expansion tank.
  • the valve 21 comes to apply on its seat practically as soon as the engine.
  • valve 21 is constituted by a spherical body, which can be retained by the arms 23 of which it is integral and the orifice 20 is formed in a flat part of the partition 19. But in the embodiment of Figure 3, the orifice 20 is formed in a spherical portion 19 a of the partition 19 and the seal 21 is retained by arms 24 integral with the partition.
  • a tranquilization grid 25 can optionally be provided under the valve.
  • the valve is constituted by a cylindrical mass 26 which carries at its upper part a finger 27 adapted to close the orifice 20 which is formed in a frustoconical part or spherical 19 b of the partition 19.
  • the mass 26 is guided and retained by the arms 24 secured to the partition 19.
  • the tranquilization grid 25 attached to the arms 24 is also provided in this embodiment.
  • Figure 5 illustrates an embodiment similar to that of Figure 4.
  • the valve 30 is movable in a space limited by a frustoconical or spherical part 19 c of the wall 19, the arms 24 and the tranquilization grid 25 It consists of a body 31 extended by an upper part 32 and a lower part 33 of smaller dimensions.
  • the part 32 carries the finger 27 and it is guided by centering arms 34.
  • the lower part 33 is in the shape of a cross and it passes through an orifice 35 of the grid 25.
  • the lower face of the body 31 has a part 36 in the shape of a truncated cone to avoid accidental sticking to the grid 25.

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)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)
  • Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)

Claims (12)

  1. Flüssigkeits-Kühlvorrichtung für einen Verbrennungsmotor, die einen Hauptkühlkreis aufweist mit einem Kühler (4), der mit dem Motor (1) über eine Zulaufleitung (5) für die Flüssigkeit und eine Rücklaufleitung (3) verbunden ist, Mitteln (2) um die Flüssigkeit zwischen dem Motor (1) und dem Kühler (4) zirkulieren zu lassen, und mit einem Thermostatventil (6), das dazu geeignet ist, den Flüssigkeitskreislauf zu unterbrechen, wenn dessen Temperatur unterhalb eines vorgegebenen Wertes liegt, sowie mindestens einen zweiten Kreis, der dem Hauptkreis parallel geschaltet ist und eine Entgasungskammer (14) mit geringem Volumen aufweist, die über eine Zulaufleitung (17) für die Flüssigkeit und eine Ablaufleitung (18) mit dem Motor (1) unter Ausschluß jeden Ventils derart verbunden ist, daß die Flüssigkeit permanent in diesem zweiten Kreis zirkuliert, und Mittel (2) um die Flüssigkeit zwischen dem Motor (1) und der Entgasungskammer (14) zirkulieren zu lassen, und ein Expansionsgefäß (8), das mit einem der Kühlkreise verbunden ist dadurch gekennzeichnet, daß die Ablaufleitung (18) der Entgasungskammer (14) in die Rücklaufleitung (3) des Hauptkreises einmündet und das Expansionsgefäß (8) direkt mit dem Hauptkühlkreis verbunden ist und daß eine (19) der Wände der Entgasungskammer (14) eine Öffnung (20) besitzt, die mit der Expansionskammer (8) verbunden ist unter Zwischenschaltung einer Klappe (21 oder 26) die so angeordnet ist, daß sie sich öffnet, wenn Gas in der Kammer (14) vorhanden ist.
  2. Kühlvorrichtung nach Anspruch 1 dadurch gekennzeichnet, daß die Entgasungskammer (14) unter dem Expansionsgefäß (8) angeordnet ist und daß die Öffnung (20) eine direkte Verbindung zwischen dem Oberteil der Entgasungskammer (14) und dem Unterteil des Expansionsgefäßes (8) ermöglicht.
  3. Kühlvorrichtung nach Anspruch 1 dadurch gekennzeichnet, daß die Entgasungskammer (14) von dem Expansionsgefäß (8) entfernt angeordnet ist und die besagte Öffnung (20) mit ihr über eine Leitung (29) verbunden ist.
  4. Kühlvorrichtung nach einem der Ansprüche 1 bis 3 dadurch gekennzeichnet, daß die Entgasungskammer (14) einen kreisförmigen Querschnitt aufweist und daß die Eingangs- (17) und Ausgangsleitung (18) tangential in sie einmünden.
  5. Kühlvorrichtung nach einem der Ansprüche 1 bis 4 dadurch gekennzeichnet, daß die Klappe (21, 26 oder 30) eine Dichte besitzt, die höchstens gleich derjenigen der Kühlflüssigkeit ist.
  6. Kühlvorrichtung nach einem der vorhergehenden An sprüche dadurch gekennzeichnet, daß die die Entgasungskammer (14) mit dem Motor (1) verbindenden Leitungen (17 und 18) einen Querschnitt besitzen, der kleiner ist als derjenige der den Kühler (4) mit diesem Motor (1) verbindenden Leitungen (3 und 5).
  7. Kühlvorrichtung nach einem der vorhergehenden Ansprüche dadurch gekennzeichnet, daß die Klappe (21) an ihrem Oberteil Rückhaltearme (23) trägt, die ihren Weg nach unten begrenzen, indem sie auf die Trennwand (19) der Kammer (14) auftreffen.
  8. Kühlvorrichtung nach einem der Ansprüche 1 bis 6 gekennzeichnet durch Rückhaltearme (24), die mit der Trennwand (19) fest verbunden sind und den Weg der Klappe (21) nach unten begrenzen.
  9. Kühlvorrichtung nach einem der vorhergehenden Ansprüche dadurch gekennzeichnet, daß die Klappe (21) kugelförmig ausgebildet ist.
  10. Kühlvorrichtung nach einem der vorhergehenden Ansprüche dadurch gekennzeichnet, daß die Öffnung (20) in einem ebenen Teil der Wand (19) angeordnet ist.
  11. Kühlvorrichtung nach einem der Ansprüche 1 bis 9 dadurch gekennzeichnet, daß die Öffnung (20) in einem sphärischen Teil (19a) der Wand (19) angeordnet ist.
  12. Kühlvorrichtung nach einem der Ansprüche 1 bis 8 dadurch gekennzeichnet, daß die Klappe (26) durch eine zylindrische Masse gebildet ist, die an ihrem Oberteil einen Zapfen trägt, der dazu geeignet ist, die in einem kegelstumpfartigen Teil (19b) der Trennwand (19) angeordnete Öffnung (20) zu verschließen.
EP89403455A 1988-12-14 1989-12-13 Kühlungsanordnung einer Brennkraftmaschine Expired - Lifetime EP0374038B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8816872 1988-12-14
FR8816872A FR2640315B1 (fr) 1988-12-14 1988-12-14 Dispositif de refroidissement a combustion interne

Publications (2)

Publication Number Publication Date
EP0374038A1 EP0374038A1 (de) 1990-06-20
EP0374038B1 true EP0374038B1 (de) 1993-10-13

Family

ID=9373208

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89403455A Expired - Lifetime EP0374038B1 (de) 1988-12-14 1989-12-13 Kühlungsanordnung einer Brennkraftmaschine

Country Status (5)

Country Link
EP (1) EP0374038B1 (de)
JP (1) JP2706542B2 (de)
DE (1) DE68909897T2 (de)
ES (1) ES2046515T3 (de)
FR (1) FR2640315B1 (de)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4106297C2 (de) * 1991-02-28 1994-09-29 Behr Gmbh & Co Querstromkühler, insbesondere Wasser/Luft-Kühler für Brennkraftmaschinen
DE4215189C2 (de) * 1992-05-08 1996-02-22 Behr Gmbh & Co Entgasungseinrichtung für eine Kühlanlage eines Kraftfahrzeugverbrennungsmotors
JP4871223B2 (ja) 2006-09-14 2012-02-08 本田技研工業株式会社 ラジエータを備える水冷式内燃機関
JP4875573B2 (ja) * 2007-09-07 2012-02-15 本田技研工業株式会社 エンジンの冷却水通路構造
GB2455743B (en) * 2007-12-20 2012-10-10 Ford Global Tech Llc Cooling system expansion tank
GB2458263A (en) * 2008-03-10 2009-09-16 Ford Global Tech Llc Cooling system expansion tank
FR2938298B1 (fr) * 2008-11-13 2010-11-12 Peugeot Citroen Automobiles Sa Circuit de refroidissement moteur
AT509435B1 (de) * 2010-02-02 2015-10-15 Vaillant Group Austria Gmbh Ausgleichsbehälter für kühlkreisläufe
DE102010018089B3 (de) 2010-04-24 2011-07-14 Audi Ag, 85057 Ventilanordnung zur Entlüftung eines Kühlmittelkreislaufs einer Brennkraftmaschine
EP2615273A1 (de) * 2012-01-11 2013-07-17 Volvo Car Corporation Kühlsystem für einen Motor
SE544074C2 (en) * 2020-04-29 2021-12-07 Scania Cv Ab Thermal Management System, and Vehicle

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0250734A2 (de) * 1986-06-28 1988-01-07 MAN Nutzfahrzeuge Aktiengesellschaft Kühleinrichtung in einem flüssigkeitsgekühlten Kraftfahrzeug-Verbrennungsmotor

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1269416B (de) * 1964-01-16 1968-05-30 Julius Fr Behr Kuehlkreislauf von Brennkraftmaschinen fuer Schienenfahrzeuge
FR2317489A1 (fr) * 1975-07-11 1977-02-04 Citroen Sa Perfectionnements apportes aux circuits de refroidissement pour moteurs a combustion
DE2821872B2 (de) * 1978-05-19 1980-05-14 Audi Nsu Auto Union Ag, 7107 Neckarsulm Überdruck-Kühlsystem für eine flüssigkeitsgekühlte Brennkraftmaschine, insbesondere in einem Kraftfahrzeug
US4358051A (en) * 1981-02-09 1982-11-09 Ford Motor Company Thermostat assembly for an engine cooling system
DE3716555A1 (de) * 1987-05-18 1988-12-08 Bayerische Motoren Werke Ag Befuell-, entlueftungs- und drucksteuer-vorrichtung fuer den fluessigkeits-kuehlkreis von kraft- und arbeitsmaschinen, insbesondere brennkraftmaschinen

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0250734A2 (de) * 1986-06-28 1988-01-07 MAN Nutzfahrzeuge Aktiengesellschaft Kühleinrichtung in einem flüssigkeitsgekühlten Kraftfahrzeug-Verbrennungsmotor

Also Published As

Publication number Publication date
FR2640315B1 (fr) 1991-02-08
DE68909897T2 (de) 1994-04-14
ES2046515T3 (es) 1994-02-01
DE68909897D1 (de) 1993-11-18
JPH02245417A (ja) 1990-10-01
EP0374038A1 (de) 1990-06-20
JP2706542B2 (ja) 1998-01-28
FR2640315A1 (fr) 1990-06-15

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