US3820593A - Installation for venting the cooling liquid of an internal compustionengine - Google Patents

Installation for venting the cooling liquid of an internal compustionengine Download PDF

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Publication number
US3820593A
US3820593A US00203372A US20337271A US3820593A US 3820593 A US3820593 A US 3820593A US 00203372 A US00203372 A US 00203372A US 20337271 A US20337271 A US 20337271A US 3820593 A US3820593 A US 3820593A
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United States
Prior art keywords
circulatory system
expansion tank
cooling liquid
vent line
interior space
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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
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US00203372A
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English (en)
Inventor
R Papst
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Daimler Benz AG
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Daimler Benz AG
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Application filed by Daimler Benz AG filed Critical Daimler Benz AG
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Publication of US3820593A publication Critical patent/US3820593A/en
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    • 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
    • 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

Definitions

  • ABSTRACT An installation for venting the cooling liquid of an internal combustion engine by means of an expansion tank, in which the expansion tank is interconnected into an auxiliary circulation of the cooling liquid and the auxiliary circulation is connected in parallel to the main circulation, and in which at least one geodetic high-point of the main circulation is connected to its own universal vent line'and the universal vent line terminates in the interiorspace of the expansion tank; the expansion tank is thereby adapted to be selectively connected with the atmosphere or closed off with respect thereto while a one way check-valve precluding the flow from the expansion tank to the geodetic highpoint is connected in effect between the high-point of the universal vent line and the interior space of the expansion tank.
  • the present invention relates to an installation for venting the cooling liquid of an internal combustion engine by means of an expansion tank, in which the expansion tank is connected into an auxiliary circulatory system of the cooling liquid and the auxiliary circulatory system is connected in parallel to the main circulatory system of the cooling liquid enforced by a pump, and in which at least one geodetic high-point of the main circulatory system is connected to its own universal vent line for the operating and filling venting and in which the universal vent line terminates in the interior space of the expansion tank and can be selectively connected with the atmosphere or closed off with respect to the latter.
  • the present invention represents a further development of the prior proposal and essentially consists in that a one-way check-valve preventing the flow from the expansion tank to the high-point is effectively connected between the high-point of the universal vent line and the interior space of the expansion tank.
  • the high-point of the. universal vent line can be located in the section between the thermostat valve and the pump of the main circulatory system, without the existence of the danger that a cooling flow by-passing the thermostat valve can occur in the universal vent line from the expansion tank tothe pump.
  • An advantageous arrangement of the one-way checkvalve in connection with a simple construction of the means for the selective connection or closing of the universal vent line in relation to the atmosphere is achieved as a further feature and development of the installation according to the present invention in that the universal vent line terminates in a chamber of the filling pipe which is closed off with respect to the atmosphere by the filling pipe closure means and with respect to the interior space of the expansion tank by the one-way check-valve.
  • Another object of the present invention resides in an installation for venting the cooling liquid of an internal combustion engine which permits greater freedom in the design and layout of the system without danger of a bypass flow from the expansion tank to the pump in the universal vent line.
  • a further object of the present invention resides in an installation for venting the cooling liquid of an internal combustion engine which is simple in construction, re-
  • FIG. 1 is a schematic view of the overall cooling liquid system of a motor vehicle in accordance with the present invention.
  • FIG. 2 is a partial cross-sectional view, on an enlarged scale, illustrating the detail X, encircled in dash and dot lines in FIG. 1.
  • the flow-line for the cooling liquid leading from the cylinder head 10 of the engine 11 to the radiator 12 is designated inFIG. l by reference numeral 13.
  • the return line of the cooling liquid leading from the radiator 12 to the circulating pump 14 driven by the engine 11 is designated by reference numeral 15.
  • the circulating pump 14 supplies the cooling liquid by way of a pressure line 16 to the cooling spaces of the cylinders, from which are fed the cooling spaces of the cylinder head 10.
  • the operating temperature of the cooling liquid in the engine is adjusted in the usual manner to an average value by a thermostat valve 17 interconnected into the flow-line 13, whereby the valve 17 controls the flow in the radiator 12 as well as in a bypass line 18 which connects the flow-line 13 with the suction connection 19 of the pump 14 in bypassing'the radiator 12.
  • the main circulatory system of the cooling liquid is constituted by the lines l3, 15, 16 and 18 whereas an expansion tank generally designated by reference numeral 20 for the volume equalization of the cooling liquid is interconnected in an auxiliary circulatory system for the cooling liquid which is constituted by an operating vent line 21 as well as a filling line 22.
  • the operating vent line 21 is branched off from the flow-line 13 between the cylinder head 10 and the thermostat valve 17 and terminates at a place generally designated by reference numeral 23 below the lowest permissive liquid level in the expansion tank 20.
  • the filling line 22 connects the discharge opening 24 of the expansion tank 20 with the suction connection 19 of circulating pump 14.
  • a filler pipe 25 which includes at the upper end an upper filling chamber 26 (FIG. 2).
  • the filling chamber 26 is closed off with respect to the atmosphere by the threaded closure means 27 of the filling pipe stub and with respect to the interior space of the lower collecting chamber 28 of the expansion tank 20 by a valve mechanism generally designated by reference numeral 29.
  • a universal vent line 30 terminates in the filling chamber 26, which is connected at its other end with the upper water box 31 of the radiator 12. During the filling of cooling liquid the screw cap 27 is removed so that in this case the universal vent line 30 for the filling ventilation of the water box 31 forming a high-point of the main circulation is in communication with the atmosphere.
  • the one-way closure or check-valve 32 of the valve mechanism 29 is connected between the universal vent line 30 and the interior space 28 of the expansion tank 20 so that the flow from the collecting chamber 28 to the water box 31 is blocked and is released in the opposite direction after overcoming a slight spring-stress for the operational venting of the water box 31.
  • the thermostat valve 17 is ineffectual since the universal vent line 30 forms a bypass with respect to the valve 17.
  • the valve mechanism 29 may consist of a valve seat plate 33 which is adhesively connected with an annular seal 34.
  • the annular seal 34 is pressed by a compression spring 35 inserted between the screw cap 27 and the valve seating plate 33 against an annular bead 36 of the filler pipe 25 forming a valve ring seat.
  • a valve spring 37 is further supported at the valve seat plate 33, which forces the one-way check-valve 32 against the ring seal 34.
  • valve mechanism 29 and the screw cap member 27 may form a structural unit adapted to be preassembled.
  • thermostat valve 17 During operation of the engine with thermostat valve 17 either completely or partially open, cooling water flows from flow line 13 via thermostat valve 17 into radiator 12 and return line 15 toward circulating pump 16.
  • An installation for venting the cooling liquid of an internal combustion engine comprising: an expansion tank means including a filling chamber and a lower collecting chamber, a main circulatory system of the cooling liquid, an auxiliary circulatory system of the cooling liquid connected in parallel to said main circulatory system and to said expansion tank means, said auxiliary circulatory system including a first vent line means connected to a first point in said main circulatory system and to the interior space of said lower collecting chamber and a filling vent line means connected to a further point in said main circulatory system and to the interior space of said collecting chamber for conveying the cooling liquid from the interior space of said collecting chamber to said main circulatory system.
  • a third vent line means having one end connected to at least one geodetic high-point of said main circulatory system for the operational filling and venting, the other end ofsaid third vent line means terminating in the interior space of said filling chamber, means for selectively sealing said filling chamber from the atmosphere, and venting means for establishing a venting connection between said filling chamber and said lower collecting chamber for operation venting and filling venting, said venting means including a one-way check-valve means opening into said collecting chamber for the operating venting process and additional means for selectively sealing said filling chamber from said lower collecting chamber for the filling venting process.
  • said one-way valve is disposed in an opening provided between of said filling chamber and said lower collecting chamber
  • said additional sealing means includes a loosely disposed valve seat plate means for selectively covering said opening, edge means on said opening means for sealingly engaging said valve seat plate means, means for biasing said valve seat plate means into engagement with said edge means, said means for biasing being disposed between said valve seat plate means and said means for selectively sealing said filling chamber.
  • An installation for venting a cooling liquid of an internal combustion engine comprising: an expansion tank means, a main circulatory system of the cooling liquid, an auxiliary circulatory system of the cooling liquid connected in parallel to said main circulatory system and to said expansion tank means, a universal vent line means connected to at least one geodetic high-point of said main circulatory system for the operational and filling venting, said universal vent line means terminating in a chamber of a filler pipe disposed in the interior space of said expansion tank, a filler pipe closure means for selectively connecting or closing off said expansion tank means with respect to the atmosphere, and a one-way check valve means for preventing the flow from said expansion tank means to said geodetic high-point connected effectively between a high-point of said universal vent line means and the interior space of said expansion tank means by closing off said filler pipe chamber from said interior space of said expansion tank means.
  • An installation according to claim 8 including a thermostat valve wherein an operational vent line is provided having one end thereof connected at a point in the main circulatory system between the engine and said thermostat valve and the other end thereof terminating in said expansion tank means at a point below the lowest permissive cooling liquid level.
  • An installation for venting the cooling liquid of an internal combustion engine comprising: an expansion tank means, a main circulatory system of thecooling liquid, an auxiliary circulatory system of the cooling liquid connected in parallel to said main circulatory system and to said expansion tank means, a first vent line means connected to at least one geodetic highpoint of said main circulatory system for operational filling and venting, said first vent line means terminating in the interior space of said expansion tank means, said auxiliary circulatory system including a second vent line means connected to another point in said main circulatory system and to the interior space of said expansion tank means for conveying at least a portion of the cooling liquid to said expansion tank means, filling vent line means connected to a further point in said main circulatory system and to the interior space of said expansion tank means for conveying the cooling liquid from the interior space of said expansion tank means to said main circulatory system, means for selectively connecting or closing off said expansion tank means with the atmosphere, a one way check-valve means disposed in the interior space of said expansion tank means for preventing the flow through said first vent line means
  • An installation for venting the cooling liquid of an internal combustion engine comprising: an expansion tank means, a main circulatory system of the cooling liquid, an auxiliary circulatory system of the cooling liquid connected in parallel to said main circulatory system and to said expansion tank means, a first vent line means connected to at least one geodetic highpoint of said main circulatory system for the operational and filling venting, said first vent line means terminating in the interior space of said expansion tank means, said auxiliary circulatory system including a second vent line means connected to another point in said main circulatory system and to the interior space of said expansion tank means for conveying at least a portion of the cooling liquid to said expansion tank means, a filling vent line means connected to a further point in said main circulatory system and to the interior space of said expansion tank means for conveying the cooling liquid from the interior space of said expansion tank means to said main circulatory system, means for selectively connecting or closing off said expansion tank means with the atmosphere, a one-way checkvalve means disposed in the interior space of said expansion tank means for preventing the flow through said first vent line

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
US00203372A 1970-12-01 1971-11-30 Installation for venting the cooling liquid of an internal compustionengine Expired - Lifetime US3820593A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19702058995 DE2058995B2 (de) 1970-12-01 1970-12-01 Vorrichtung zum entlueften der kuehlfluessigkeit einer brennkraftmaschine

Publications (1)

Publication Number Publication Date
US3820593A true US3820593A (en) 1974-06-28

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US00203372A Expired - Lifetime US3820593A (en) 1970-12-01 1971-11-30 Installation for venting the cooling liquid of an internal compustionengine

Country Status (5)

Country Link
US (1) US3820593A (enExample)
DE (1) DE2058995B2 (enExample)
FR (1) FR2117217A5 (enExample)
GB (1) GB1328579A (enExample)
IT (1) IT945131B (enExample)

Cited By (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4273081A (en) * 1979-08-27 1981-06-16 Caterpillar Tractor Co. Vent valve for engine cooling systems
US4361118A (en) * 1980-02-26 1982-11-30 Kubota, Ltd. Cooling apparatus of combustion chambers for water-cooled engines
US4403647A (en) * 1978-03-06 1983-09-13 Melley Energy Systems Radiator fill apparatus for mobile electric power generating systems
US4461342A (en) * 1982-04-29 1984-07-24 Avrea Walter C Method and apparatus for automatically refilling a leaking liquid cooling system as an engine operates by utilizing a radiator and a remote coolant reservoir
US4537159A (en) * 1983-10-25 1985-08-27 Nissan Motor Co., Ltd. Coolant reserve tank
US4577594A (en) * 1984-02-23 1986-03-25 Nissan Motor Co., Ltd. Cooling system for automotive engine
US4592418A (en) * 1980-06-06 1986-06-03 Valeo Degassing device for a fluid circulating in a heat exchanger
USRE32434E (en) * 1982-04-29 1987-06-09 Method and apparatus for automatically refilling a leaking liquid cooling system as an engine operates by utilizing a radiator and a remote coolant reservoir
US4677943A (en) * 1986-03-03 1987-07-07 Skinner Alan A Automotive non-pressure cooling system
US4722305A (en) * 1987-03-30 1988-02-02 Shell Oil Company Apparatus and method for oxidation and corrosion prevention in a vehicular coolant system
US4735176A (en) * 1984-11-14 1988-04-05 Kubota Limited Closed evaporative cooling system for an engine
US4790369A (en) * 1982-04-29 1988-12-13 Avrea Walter C Method and apparatus for continuously maintaining a volume of coolant within a pressurized cooling system
US5044430A (en) * 1982-04-29 1991-09-03 Avrea Walter C Method and apparatus for continuously maintaining a volume of coolant within a pressurized cooling system
US5135049A (en) * 1990-08-08 1992-08-04 Mercedes-Benz Ag Vent line in the cooling circuit of an internal combustion engine
US5257661A (en) * 1989-07-25 1993-11-02 Daimler-Benz Ag Heat exchanger, especially a heating heat exchanger in engine cooling circuit of a motor vehicle
US5836269A (en) * 1996-02-29 1998-11-17 Dr. Ing. H.C.F. Porsche Ag Coolant circuit of an internal-combustion engine
US6125644A (en) * 1998-04-03 2000-10-03 United Microelectronics, Corp. Container of coolant
FR2791765A1 (fr) * 1999-03-30 2000-10-06 Denso Corp Goulot de remplissage de radiateur
US6378717B1 (en) * 1994-06-01 2002-04-30 Heinrich Reutter Removable closure cap with temperature dependent control element
US20050066915A1 (en) * 2003-09-26 2005-03-31 Jung Hee Jong Coolant recovery system of a vehicle
US20090250019A1 (en) * 2005-12-05 2009-10-08 Volvo Lastvagnar Ab Cooling system
US20130139903A1 (en) * 2010-08-07 2013-06-06 Audi Ag Expansion reservoir for a coolant circuit
CN103437880A (zh) * 2013-08-30 2013-12-11 重庆长安汽车股份有限公司 一种发动机冷却系统及排气结构
US20150136381A1 (en) * 2012-04-23 2015-05-21 Toyota Jidosha Kabushiki Kaisha Heat transport device
US10161101B2 (en) * 2014-11-28 2018-12-25 Hitachi Construction Machinery Co., Ltd. Construction machine
RU2708735C2 (ru) * 2014-12-26 2019-12-11 Форд Глобал Текнолоджиз, Ллк Способ (варианты) и система управления системой охлаждения двигателя
CN111048866A (zh) * 2018-10-12 2020-04-21 三星Sdi株式会社 用于车辆的电池组

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2317489A1 (fr) * 1975-07-11 1977-02-04 Citroen Sa Perfectionnements apportes aux circuits de refroidissement pour moteurs a combustion
FR2582053B1 (fr) * 1985-03-21 1989-04-07 Cyclam Procede et dispositif de mise sous pression du circuit de refroidissement d'un moteur a combustion interne
DE3631528A1 (de) * 1986-09-17 1988-03-24 Deere & Co Verschlussteil fuer einen im wesentlichen mit fluessigkeit gefuellten behaelter
JPH063143B2 (ja) * 1988-08-30 1994-01-12 富士重工業株式会社 ターボチャージャ付内燃機関の冷却装置
RU2149270C1 (ru) * 1998-05-05 2000-05-20 Синицын Валерий Хрисанфович Система жидкостного охлаждения двигателя внутреннего сгорания

Cited By (31)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4403647A (en) * 1978-03-06 1983-09-13 Melley Energy Systems Radiator fill apparatus for mobile electric power generating systems
US4273081A (en) * 1979-08-27 1981-06-16 Caterpillar Tractor Co. Vent valve for engine cooling systems
US4361118A (en) * 1980-02-26 1982-11-30 Kubota, Ltd. Cooling apparatus of combustion chambers for water-cooled engines
US4592418A (en) * 1980-06-06 1986-06-03 Valeo Degassing device for a fluid circulating in a heat exchanger
US4461342A (en) * 1982-04-29 1984-07-24 Avrea Walter C Method and apparatus for automatically refilling a leaking liquid cooling system as an engine operates by utilizing a radiator and a remote coolant reservoir
USRE32434E (en) * 1982-04-29 1987-06-09 Method and apparatus for automatically refilling a leaking liquid cooling system as an engine operates by utilizing a radiator and a remote coolant reservoir
US4790369A (en) * 1982-04-29 1988-12-13 Avrea Walter C Method and apparatus for continuously maintaining a volume of coolant within a pressurized cooling system
US5044430A (en) * 1982-04-29 1991-09-03 Avrea Walter C Method and apparatus for continuously maintaining a volume of coolant within a pressurized cooling system
US4537159A (en) * 1983-10-25 1985-08-27 Nissan Motor Co., Ltd. Coolant reserve tank
US4577594A (en) * 1984-02-23 1986-03-25 Nissan Motor Co., Ltd. Cooling system for automotive engine
US4735176A (en) * 1984-11-14 1988-04-05 Kubota Limited Closed evaporative cooling system for an engine
US4677943A (en) * 1986-03-03 1987-07-07 Skinner Alan A Automotive non-pressure cooling system
US4722305A (en) * 1987-03-30 1988-02-02 Shell Oil Company Apparatus and method for oxidation and corrosion prevention in a vehicular coolant system
US5257661A (en) * 1989-07-25 1993-11-02 Daimler-Benz Ag Heat exchanger, especially a heating heat exchanger in engine cooling circuit of a motor vehicle
US5135049A (en) * 1990-08-08 1992-08-04 Mercedes-Benz Ag Vent line in the cooling circuit of an internal combustion engine
US6378717B1 (en) * 1994-06-01 2002-04-30 Heinrich Reutter Removable closure cap with temperature dependent control element
US5836269A (en) * 1996-02-29 1998-11-17 Dr. Ing. H.C.F. Porsche Ag Coolant circuit of an internal-combustion engine
US6125644A (en) * 1998-04-03 2000-10-03 United Microelectronics, Corp. Container of coolant
FR2791765A1 (fr) * 1999-03-30 2000-10-06 Denso Corp Goulot de remplissage de radiateur
US20050066915A1 (en) * 2003-09-26 2005-03-31 Jung Hee Jong Coolant recovery system of a vehicle
US6941902B2 (en) * 2003-09-26 2005-09-13 Hyundai Motor Company Coolant recovery system of a vehicle
US20090250019A1 (en) * 2005-12-05 2009-10-08 Volvo Lastvagnar Ab Cooling system
US20130139903A1 (en) * 2010-08-07 2013-06-06 Audi Ag Expansion reservoir for a coolant circuit
US8857468B2 (en) * 2010-08-07 2014-10-14 Audi Ag Expansion reservoir for a coolant circuit
US20150136381A1 (en) * 2012-04-23 2015-05-21 Toyota Jidosha Kabushiki Kaisha Heat transport device
CN103437880A (zh) * 2013-08-30 2013-12-11 重庆长安汽车股份有限公司 一种发动机冷却系统及排气结构
US10161101B2 (en) * 2014-11-28 2018-12-25 Hitachi Construction Machinery Co., Ltd. Construction machine
RU2708735C2 (ru) * 2014-12-26 2019-12-11 Форд Глобал Текнолоджиз, Ллк Способ (варианты) и система управления системой охлаждения двигателя
CN111048866A (zh) * 2018-10-12 2020-04-21 三星Sdi株式会社 用于车辆的电池组
US11456496B2 (en) 2018-10-12 2022-09-27 Samsung Sdi Co., Ltd. Battery pack for a vehicle
CN111048866B (zh) * 2018-10-12 2023-04-07 三星Sdi株式会社 用于车辆的电池组

Also Published As

Publication number Publication date
DE2058995A1 (de) 1972-06-15
DE2058995B2 (de) 1973-08-09
FR2117217A5 (enExample) 1972-07-21
IT945131B (it) 1973-05-10
GB1328579A (en) 1973-08-30

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