EP0250734A2 - Cooling-system in a liquid cooled vehicle-combustion engine - Google Patents

Cooling-system in a liquid cooled vehicle-combustion engine Download PDF

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Publication number
EP0250734A2
EP0250734A2 EP87105343A EP87105343A EP0250734A2 EP 0250734 A2 EP0250734 A2 EP 0250734A2 EP 87105343 A EP87105343 A EP 87105343A EP 87105343 A EP87105343 A EP 87105343A EP 0250734 A2 EP0250734 A2 EP 0250734A2
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EP
European Patent Office
Prior art keywords
line
water pump
bubble separator
cooling
cooling device
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
EP87105343A
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German (de)
French (fr)
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EP0250734A3 (en
EP0250734B1 (en
Inventor
Heinz Gusinde
Horst Steinert
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.)
MAN Truck and Bus SE
Original Assignee
MAN Nutzfahrzeuge AG
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.)
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Publication date
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6304012&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0250734(A2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by MAN Nutzfahrzeuge AG filed Critical MAN Nutzfahrzeuge AG
Priority to AT87105343T priority Critical patent/ATE56788T1/en
Publication of EP0250734A2 publication Critical patent/EP0250734A2/en
Publication of EP0250734A3 publication Critical patent/EP0250734A3/en
Application granted granted Critical
Publication of EP0250734B1 publication Critical patent/EP0250734B1/en
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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
    • F01P11/028—Deaeration devices

Definitions

  • the invention relates to a cooling device for a liquid-cooled motor vehicle internal combustion engine with a radiator, a water pump, a cooling water expansion tank, a radiator of an engine ventilation and various control and connecting elements.
  • Bubble separators are known in cooling water systems (DE-AS 26 15 728 and DE-OS 26 15 729). These are integrated in the control valve (thermostat). They are much too high compared to the coolant pump and do not have a large-volume calming room in which a low flow velocity and thus absorption of air bubbles can be achieved.
  • the object of the invention is to arrange and design a bubble separator in such a way that optimal separation of air bubbles is achieved with simple means.
  • a bubble separator is arranged between the cooler and the water pump and the bubble separator is connected via a line to the cooling water expansion tank / as the bubble accumulator also holds at least 3 times the amount of liquid which corresponds to the inlet cross section of the water pump.
  • This arrangement of the bubble separator leads to noticeably reduced cooling water flow velocities, so that air bubbles are discharged into the cooling water expansion tank (refill tank) immediately before being re-swirled and do not get into the engine cooling circuit first. In this way, cavitation damage with partial destruction of engine components (cylinder liners, pistons, etc.), which can result in a total failure of the drive unit, is avoided.
  • the large-volume design of the bubble separator also prevents suction through the vent line.
  • the confluence of the heating circuit and the line system is advantageously provided in front of the bubble separator. This makes the entire cooling system bubble-free even faster.
  • the bubble separator is tapered from a broad base, in which the connecting line of the cooler and water pump opens, to the connecting line with the cooling water expansion tank.
  • the air bubbles are compressed into ever larger units with increasing upward speed, which continues to have a positive effect on the ventilation.
  • the optimal air bubble flow to the expansion tank is achieved by means of a conical design of the bubble separator.
  • Fig. 1 shows a motor (1) with gear (2) which is connected via the lines (4, 5) to a cooler (3). Above the cooler (3) there is a cooling water expansion tank (6), the line (7) of which flows into the cooler (3) and the line (8) of which leads into line (4).
  • a line (9) branches off from the motor (1) and leads to a radiator (10), the output of which is connected to line (4) via line (11).
  • An air separator (13) is installed in line (4) shortly before the water pump (12) connected to the motor (1).
  • the air separator is conical and is connected to the cooling water expansion tank via a line (14).
  • the lines (7 and 14) have check valves (15).
  • the engine is vented via line (16).
  • Fig. 2 shows the schematic representation of a bubble separator (13) in a conical configuration (18), the base (17) lying in the plane of the line (4) tapering upwards until it flows into the line (14).
  • Fig. 3 shows a variant of the bubble separator (13) with a slope (19) and a vertical wall (20), the air bubbles moving along the slope (19) to the line (14) and further to the container.

Landscapes

  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
  • Degasification And Air Bubble Elimination (AREA)
  • Exhaust Gas After Treatment (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Motor Or Generator Cooling System (AREA)
  • Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
  • Exhaust-Gas Circulating Devices (AREA)
  • Lubrication Of Internal Combustion Engines (AREA)
  • Physical Water Treatments (AREA)

Abstract

A bubble trap is arranged in the cooling system of a water-cooled engine between the radiator and the water pump. The bubble trap is connected via a duct with the cooling water level compensating tank and is designed to contain at least three times the amount of water corresponding to the cross section of the inlet of the water pump. The opening of the heater circuit into the line connecting the bubble trap with the radiator is arranged a short distance upstream from the bubble trap.

Description

Die Erfindung bezieht sich auf eine Kühleinrichtung für einen flüssigkeitsgekühlten Kraftfahrzeug-Verbrennungs­motor mit einem Kühler, einer Wasserpumpe, einem Kühlwasser-Ausgleichsbehälter, einem Heizkörper einer Motorentlüftung sowie diversen Regel- und Verbindungselementen.The invention relates to a cooling device for a liquid-cooled motor vehicle internal combustion engine with a radiator, a water pump, a cooling water expansion tank, a radiator of an engine ventilation and various control and connecting elements.

Es sind Blasenabscheider in Kühlwassersystemen bekannt (DE-AS 26 15 728 und DE-OS 26 15 729). Diese sind im Steuerventil (Thermostat) integriert. Sie liegen gegenüber der Kühlmittelpumpe viel zu hoch und verfügen über keinen großvolumigen Beruhigungsraum, in dem eine niedrige Strömungsgeschwindigkeit und somit eine Absorption von Luftblasen erzielt werden kann.Bubble separators are known in cooling water systems (DE-AS 26 15 728 and DE-OS 26 15 729). These are integrated in the control valve (thermostat). They are much too high compared to the coolant pump and do not have a large-volume calming room in which a low flow velocity and thus absorption of air bubbles can be achieved.

Der Erfindung liegt die Aufgabe zugrunde, einen Blasenabscheider so anzuordnen und auszubilden, daß mit einfachen Mitteln eine optimale Ausscheidung von Luftblasen erzielt wird.The object of the invention is to arrange and design a bubble separator in such a way that optimal separation of air bubbles is achieved with simple means.

Dies wird erfindungsgemäß dadurch gelöst, daß zwischen Kühler und Wasserpumpe ein Blasenabscheider angeordnet ist und der Blasenabscheider über eine Leitung mit dem Kühlwasser-Ausgleichsbehälter verbunden ist/wie auch der Blasenspeicher mindestens die 3-fache Flüssigkeitsmenge faßt, die dem Einlaßquerschnitt der Wasserpumpe entspricht.This is achieved according to the invention in that a bubble separator is arranged between the cooler and the water pump and the bubble separator is connected via a line to the cooling water expansion tank / as the bubble accumulator also holds at least 3 times the amount of liquid which corresponds to the inlet cross section of the water pump.

Durch diese Anordnung des Blasenabscheiders kommt es zu merklich reduzierten Kühlwasser-Strömungsgeschwindigkeiten, so daß Luftblasen unmittelbar vor erneuter Verwirbelung durch die Wasserpume in den Kühlwasser-Ausgleichsbehälter (Nachfüllbehälter) abgeführt werden und nicht erstin den Motor-Kühlkreislauf gelangen. Solcherart werden Kavitationsschäden mit parti eller Zerstörung von Motorbauteilen (Zylinderlaufbahn, Kolben etc.), was einen Totalausfall des Antriebsaggregates zur Folge haben kann, vermieden. Neben dem Herabsetzen der Kühlwasser-Strömungs­geschwindigkeit wird durch die großvolumige Ausbildung des Blasenabscheiders auch ein Ansaugen über die Entlüftungsleitung verhindert.This arrangement of the bubble separator leads to noticeably reduced cooling water flow velocities, so that air bubbles are discharged into the cooling water expansion tank (refill tank) immediately before being re-swirled and do not get into the engine cooling circuit first. In this way, cavitation damage with partial destruction of engine components (cylinder liners, pistons, etc.), which can result in a total failure of the drive unit, is avoided. In addition to reducing the cooling water flow rate, the large-volume design of the bubble separator also prevents suction through the vent line.

Vorteilhafterweise ist die Einmündung des Heizkreislaufes in das Leitungssystem vor dem Blasenabscheider vorgesehen. Dadurch wird das gesamte Kühlsystem noch schneller blasenfrei.The confluence of the heating circuit and the line system is advantageously provided in front of the bubble separator. This makes the entire cooling system bubble-free even faster.

Nach einem besonderen Merkmal der Erfindung ist der Blasenabscheider, von einer breiten Basis ausgehend, in der die Verbindungsleitung von Kühler und Wasserpumpe einmündet, zur Verbindungsleitung mit dem Kühlwasser­Ausgleichsbehälter sich verjüngend ausgebildet. Auf diese Weise werden die Luftblasen zu immer größeren Einheiten mit wachsender Aufwärtsgeschwindigkeit zusammengedrängt, wodurch die Entlüftung weiterhin positiv beinflußt wird. Der optimale Lufblasenfluß zum Ausgleichsbehälter hin wird mittels einer kegelförmigen Ausbildung des Blasenabscheiders erzielt.According to a special feature of the invention, the bubble separator is tapered from a broad base, in which the connecting line of the cooler and water pump opens, to the connecting line with the cooling water expansion tank. In this way, the air bubbles are compressed into ever larger units with increasing upward speed, which continues to have a positive effect on the ventilation. The optimal air bubble flow to the expansion tank is achieved by means of a conical design of the bubble separator.

Weitere Vorteile und Merkmale der Erfindung sind den Ansprüchen, der Beschreibung und den Zeichnungen zu entnehmen.Further advantages and features of the invention can be found in the claims, the description and the drawings.

Die Erfindung ist in zwei Ausführungsbeispielen dargestellt:The invention is shown in two exemplary embodiments:

Es zeigen:

  • Fig. 1 eine schematische Darstellung einer Kühleinrichtung,
  • Fig. 2 eine Schemazeichnung eines Blasenab­scheiders,
  • Fig. 3 eine Schemazeichnung eines Blasenab­scheiders mit Kühlwasser-Ausgleichsbehälter
Show it:
  • 1 is a schematic representation of a cooling device,
  • 2 is a schematic drawing of a bubble separator,
  • Fig. 3 is a schematic drawing of a bubble separator with cooling water expansion tank

Fig. 1 zeigt einen Motor (1) mit Getriebe (2), der über die Leitungen (4, 5) mit einem Kühler (3) verbunden ist. Oberhalb des Kühlers (3) befindet sich ein Kühlwasser-­Ausgleichsbehälter (6), dessen Leitung (7) in dem Kühler (3) und dessen Leitung (8) in Leitung (4) münden. Vom Motor (1) zweigt eine Leitung (9) ab, die zu einem Heizkörper (10) führt, dessen Ausgang über Leitung (11) mit Leitung (4) verbunden ist. In Leitung (4) ist kurz vor der mit dem Motor (1) verbundenen Wasserpumpe (12) ein Luftabscheider (13) eingebaut, der kegelförmig und von seiner Spitze ausgehend über eine Leitung (14) mit dem Kühlwasser-Ausgleichsbehälter verbunden ist. Die Leitungen (7 und 14) weisen Rückschlagventile (15) auf. Die Motorentlüfung erfolgt über Leitung (16).Fig. 1 shows a motor (1) with gear (2) which is connected via the lines (4, 5) to a cooler (3). Above the cooler (3) there is a cooling water expansion tank (6), the line (7) of which flows into the cooler (3) and the line (8) of which leads into line (4). A line (9) branches off from the motor (1) and leads to a radiator (10), the output of which is connected to line (4) via line (11). An air separator (13) is installed in line (4) shortly before the water pump (12) connected to the motor (1). The air separator is conical and is connected to the cooling water expansion tank via a line (14). The lines (7 and 14) have check valves (15). The engine is vented via line (16).

Fig. 2 zeigt die schematische Darstellung eines Blasenabscheiders (13) in kegeliger Ausbildung (18), wobei die in der Ebene der Leitung (4) liegende Basis (17) sich nach oben bis zur Einmündung in die Leitung (14) verjüngt.Fig. 2 shows the schematic representation of a bubble separator (13) in a conical configuration (18), the base (17) lying in the plane of the line (4) tapering upwards until it flows into the line (14).

Fig. 3 zeigt eine Variante des Blasenabscheiders (13) mit einer Schräge (19) und einer vertikalen Wand (20), wobei sich die Luftblasen entlang der Schräge (19) zur Leitung (14) und weiterhin zum Behälter bewegen.Fig. 3 shows a variant of the bubble separator (13) with a slope (19) and a vertical wall (20), the air bubbles moving along the slope (19) to the line (14) and further to the container.

Claims (6)

1. Kühleinrichtung für einen flüssigkeitsgekühlten Kraftfahrzeug-Verbrennungsmotor mit einem Kühler, einer Wasserpumpe, einem Kühlwasser-Ausgleichsbehälter, einem Heizkörper, einer Motorentlüftung sowie diversen Regel- und Verbindungselementen, dadurch gekennzeichnet, daß zwischen Kühler (3) und Wasserpumpe (12) ein Blasenabscheider (13) angeordnet ist und der Blasenabscheider (13) über eine Leitung (14) mit dem Kühlwasser-Ausgleichsbe­hälter (6) verbunden ist.1. Cooling device for a liquid-cooled motor vehicle internal combustion engine with a cooler, a water pump, a cooling water expansion tank, a radiator, an engine ventilation and various control and connecting elements, characterized in that a bubble separator () between cooler (3) and water pump (12) 13) is arranged and the bubble separator (13) is connected to the cooling water expansion tank (6) via a line (14). 2. Kühleinrichtung nach Anspruch 1, dadurch gekennzeichnet, daß der Blasenabscheider (13) mindestens die 3-fache Flüssigkeitsmenge faßt, die dem Einlaßquerschnitt der Wasserpumpe (12) entspricht.2. Cooling device according to claim 1, characterized in that the bubble separator (13) holds at least 3 times the amount of liquid which corresponds to the inlet cross section of the water pump (12). 2. Kühleinrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Einmündung des Heizkreislaufes (9, 10, 11) in die Leitung (4) vor dem Blasenabscheider (13) vorgesehen ist.2. Cooling device according to claim 1 or 2, characterized in that the opening of the heating circuit (9, 10, 11) in the line (4) in front of the bubble separator (13) is provided. 4. Kühleinrichtung nach den Ansprüchen 1 bis 3, dadurch gekennzeichnet, daß der Blasenabscheider (13), von einer breiten Basis (17) ausgehend, in der die Verbindungsleitung (4) von Kühler (3) und Wasserpumpe (12) einmündet, sich zur Verbindungsleitung (14) verjüngend ausgebildet ist.4. Cooling device according to claims 1 to 3, characterized in that the bubble separator (13), starting from a wide base (17) in which the connecting line (4) of the cooler (3) and water pump (12) opens out to Connection line (14) is tapered. 5. Kühleinrichtung nach einem oder mehreren der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß der Blasenabscheider (13) eine Kegelkontur (18) aufweist.5. Cooling device according to one or more of claims 1 to 4, characterized in that the bubble separator (13) has a cone contour (18). 6. Kühleinrichtung nach einem oder mehreren der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß der Blasenspeicher (13) an der vom Wasserkühler (3) ausgehenden Leitung (4) durch eine Schräge (19) und an der von der Wasserpumpe (12) ausgehenden Leitung (4) mittels einer vertikalen Begrenzung (20) mit der Verbindungsleitung (14) verbunden ist.6. Cooling device according to one or more of claims 1 to 4, characterized in that the bladder accumulator (13) on the outgoing from the water cooler (3) line (4) through a slope (19) and on the outgoing from the water pump (12) Line (4) is connected to the connecting line (14) by means of a vertical boundary (20).
EP87105343A 1986-06-28 1987-04-10 Cooling-system in a liquid cooled vehicle-combustion engine Expired - Lifetime EP0250734B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87105343T ATE56788T1 (en) 1986-06-28 1987-04-10 COOLING DEVICE IN A LIQUID-COOLED AUTOMOTIVE COMBUSTION ENGINE.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3621837 1986-06-28
DE19863621837 DE3621837A1 (en) 1986-06-28 1986-06-28 BUBBLE SEPARATOR FOR WATER-COOLED ENGINES

Publications (3)

Publication Number Publication Date
EP0250734A2 true EP0250734A2 (en) 1988-01-07
EP0250734A3 EP0250734A3 (en) 1989-01-04
EP0250734B1 EP0250734B1 (en) 1990-09-19

Family

ID=6304012

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87105343A Expired - Lifetime EP0250734B1 (en) 1986-06-28 1987-04-10 Cooling-system in a liquid cooled vehicle-combustion engine

Country Status (6)

Country Link
US (1) US4759499A (en)
EP (1) EP0250734B1 (en)
JP (1) JPS639623A (en)
AT (1) ATE56788T1 (en)
DE (2) DE3621837A1 (en)
HU (1) HU199940B (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0374038B1 (en) * 1988-12-14 1993-10-13 Automobiles Peugeot Cooling device for an internal-combustion engine
WO2008043399A1 (en) * 2006-10-14 2008-04-17 Daimler Ag Cooling circuit for a motor vehicle
EP2375027A3 (en) * 2010-02-02 2013-01-09 Vaillant GmbH Compensation container for coolant circuits

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2081234B1 (en) * 1992-05-07 1998-05-01 Radiadores Ordonez S A IMPROVEMENTS IN AUTOMOBILE VEHICLE RADIATORS.
ES2111421B1 (en) * 1994-01-28 1998-12-01 Radiadores Ordonez S A IMPROVEMENTS INTRODUCED IN RADIATOR DEGASIFICATION CIRCUITS.
US6123144A (en) * 1997-04-15 2000-09-26 Cummins Engine Company, Inc. Integrated heat exchanger and expansion tank
DE19754797A1 (en) * 1997-12-10 1999-06-17 Behr Gmbh & Co Gas vent for coolant circuit of internal combustion engine
FR2807827B1 (en) * 2000-04-12 2002-07-05 Technomed Medical Systems FLUID HANDLING SYSTEM FOR THERAPY APPARATUS
JP4296988B2 (en) * 2004-05-14 2009-07-15 ソニー株式会社 LCD projector
JP4381260B2 (en) * 2004-08-31 2009-12-09 愛知機械工業株式会社 Car
GB0423802D0 (en) * 2004-10-27 2004-12-01 Ford Global Tech Llc Engine cooling systems
DE102005008669B4 (en) * 2005-02-25 2009-08-20 Audi Ag Method for operating a cooling device of a liquid-cooled internal combustion engine and cooling device
DE102006014400B4 (en) * 2006-02-02 2012-01-26 Audi Ag Expansion tank for a cooling system and cooling arrangement
US7395787B1 (en) * 2007-02-13 2008-07-08 Gm Global Technology Operations, Inc. Air separator for low flow rate cooling systems
US7669558B2 (en) * 2007-07-16 2010-03-02 Gm Global Technology Operations, Inc. Integrated vehicle cooling system
DE102007057749A1 (en) * 2007-11-30 2009-06-04 GM Global Technology Operations, Inc., Detroit Cooling system for a car engine
US9849753B2 (en) 2008-05-16 2017-12-26 GM Global Technology Operations LLC Heating system for an automotive vehicle
JP2015059482A (en) * 2013-09-18 2015-03-30 トヨタ自動車株式会社 Vehicular tank
DE102013221447A1 (en) * 2013-10-22 2015-05-07 Volkswagen Aktiengesellschaft Cooling system for a motor vehicle
EP3201445B1 (en) 2014-10-02 2020-09-30 MTU Friedrichshafen GmbH Cooling system, and internal combustion engine comprising a cooling system of said type
DE102018007699A1 (en) * 2018-10-01 2020-04-02 Truma Gerätetechnik GmbH & Co. KG Device for heating a liquid

Citations (9)

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Publication number Priority date Publication date Assignee Title
US3195294A (en) * 1961-03-20 1965-07-20 Ford Motor Co Fluid separator
DE1426185A1 (en) * 1962-07-31 1969-01-23 Daimler Benz Ag Cooling circuit of an internal combustion engine
FR1579850A (en) * 1967-09-13 1969-08-29
US3952765A (en) * 1974-12-04 1976-04-27 Shinichi Kimura Device for separating air bubbles of fluids in piping, and silencing water flow
FR2292109A1 (en) * 1974-11-22 1976-06-18 Citroen Sa Cooling system for car engine - has venturi in water circulation preventing re-absorption of vapour in expansion tank
CH589462A5 (en) * 1975-04-16 1977-07-15 Semperit Ag Liquid in pipeline degassed or defoamed - in dome-like vessel mounted on pipe with blowdown valve
DE2615728A1 (en) * 1976-04-10 1977-10-20 Daimler Benz Ag LIQUID-COOLED COMBUSTION MACHINE
DE2615729A1 (en) * 1976-04-10 1977-10-20 Daimler Benz Ag Air vent for engine coolant system - has air venting connection to radiator header to allow proper access of liq. coolant to thermostat
US4504396A (en) * 1980-05-15 1985-03-12 Isaih Vardi Purification system

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3195294A (en) * 1961-03-20 1965-07-20 Ford Motor Co Fluid separator
DE1426185A1 (en) * 1962-07-31 1969-01-23 Daimler Benz Ag Cooling circuit of an internal combustion engine
FR1579850A (en) * 1967-09-13 1969-08-29
FR2292109A1 (en) * 1974-11-22 1976-06-18 Citroen Sa Cooling system for car engine - has venturi in water circulation preventing re-absorption of vapour in expansion tank
US3952765A (en) * 1974-12-04 1976-04-27 Shinichi Kimura Device for separating air bubbles of fluids in piping, and silencing water flow
CH589462A5 (en) * 1975-04-16 1977-07-15 Semperit Ag Liquid in pipeline degassed or defoamed - in dome-like vessel mounted on pipe with blowdown valve
DE2615728A1 (en) * 1976-04-10 1977-10-20 Daimler Benz Ag LIQUID-COOLED COMBUSTION MACHINE
DE2615729A1 (en) * 1976-04-10 1977-10-20 Daimler Benz Ag Air vent for engine coolant system - has air venting connection to radiator header to allow proper access of liq. coolant to thermostat
US4504396A (en) * 1980-05-15 1985-03-12 Isaih Vardi Purification system

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0374038B1 (en) * 1988-12-14 1993-10-13 Automobiles Peugeot Cooling device for an internal-combustion engine
WO2008043399A1 (en) * 2006-10-14 2008-04-17 Daimler Ag Cooling circuit for a motor vehicle
EP2375027A3 (en) * 2010-02-02 2013-01-09 Vaillant GmbH Compensation container for coolant circuits

Also Published As

Publication number Publication date
EP0250734A3 (en) 1989-01-04
HU199940B (en) 1990-03-28
ATE56788T1 (en) 1990-10-15
DE3765026D1 (en) 1990-10-25
JPS639623A (en) 1988-01-16
US4759499A (en) 1988-07-26
HUT49391A (en) 1989-09-28
DE3621837A1 (en) 1988-01-07
EP0250734B1 (en) 1990-09-19

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