WO2020008040A1 - Circuit de refroidissement pour un véhicule automobile et composants du circuit de refroidissement ainsi qu'une soupape de purge - Google Patents

Circuit de refroidissement pour un véhicule automobile et composants du circuit de refroidissement ainsi qu'une soupape de purge Download PDF

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Publication number
WO2020008040A1
WO2020008040A1 PCT/EP2019/068113 EP2019068113W WO2020008040A1 WO 2020008040 A1 WO2020008040 A1 WO 2020008040A1 EP 2019068113 W EP2019068113 W EP 2019068113W WO 2020008040 A1 WO2020008040 A1 WO 2020008040A1
Authority
WO
WIPO (PCT)
Prior art keywords
volume
vent valve
component
cooling circuit
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.)
Ceased
Application number
PCT/EP2019/068113
Other languages
German (de)
English (en)
Inventor
Ralph Böttger
José BENITEZ-LUNA
Jörg TÜRPITZ
Dirk SCHÜMANN
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.)
Volkswagen AG
Original Assignee
Volkswagen 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.)
Filing date
Publication date
Application filed by Volkswagen AG filed Critical Volkswagen AG
Priority to DE112019003453.7T priority Critical patent/DE112019003453A5/de
Publication of WO2020008040A1 publication Critical patent/WO2020008040A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

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
    • 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
    • F01P7/00—Controlling of coolant flow
    • F01P7/14—Controlling of coolant flow the coolant being liquid
    • F01P7/16—Controlling of coolant flow the coolant being liquid by thermostatic control
    • 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
    • F01P11/00—Component parts, details, or accessories not provided for in, or of interest apart from, groups F01P1/00 - F01P9/00
    • F01P11/04—Arrangements of liquid pipes or hoses

Definitions

  • the invention relates to a cooling circuit for a motor vehicle and a component of the cooling circuit.
  • the invention further relates to a vent valve, which can be used in particular with the component of the cooling circuit.
  • the cooling circuit of a motor vehicle regularly comprises a plurality of components and an expansion tank.
  • the or each component has a volume for receiving and passing through a cooling liquid and at least one first connection for supplying the cooling liquid to the volume and a second connection for removing the cooling liquid from the volume.
  • the components are connected to each other for the passage of the coolant through the volume or through the volumes (to ensure an exchange of the coolant within the volumes) and to the expansion tank for supplying the coolant.
  • each of the components has a ventilation line to the expansion tank so that a gas (eg air) can be discharged from the respective volume to the expansion tank and to the environment via the expansion tank.
  • the ventilation lines are connected in particular at a highest point in the volume (opposite to the direction of gravity), so that the gas accumulating there can flow out to the expansion tank via the ventilation line.
  • the ventilation lines must be provided in addition to the connecting lines connecting the connections. It is also known to use manually operated ventilation valves in cooling circuits.
  • the object of the present invention is to at least partially solve the problems mentioned with reference to the prior art.
  • the construction of a cooling circuit, for. B. can be simplified by saving components.
  • the cooling circuit should be lighter in terms of weight and should be producible at a lower price.
  • the installation space required for the cooling circuit is to be reduced.
  • a cooling circuit for a motor vehicle at least comprising a plurality of components and an expansion tank; wherein each component has a volume for receiving and passing a cooling liquid and at least a first connection for supplying the cooling liquid to the volume and a second connection for Removing the coolant from the volume.
  • the components are connected to one another for the passage of the coolant, and to the expansion tank for the supply of the coolant.
  • Each component of at least part of the plurality of components has an automatic vent valve for venting a gas from the volume of the component to an environment.
  • the vent valve only switches (i.e. in particular independently of a first minimum volume and / or a second minimum volume) when the temperature falls below a maximum (in the volume and / or at the vent valve or the coolant) into an open valve position (starting from a closed one valve position).
  • each component can be vented individually and automatically (i.e. automatically).
  • vent line connecting a component to the expansion tank makes it possible to manufacture the cooling circuit more easily, more cheaply and more easily in terms of weight.
  • the installation space of the cooling circuit can also be reduced.
  • a volume or a component is defined by the function of cooling or tempering a component of a motor vehicle.
  • Components for cooling a drive unit, a transmission, electrical components, hydraulic fluids etc. are known.
  • components are connected to one another by connecting lines, which have a constant flow cross-section, in particular over an extent of at least 50 millimeters.
  • vent valve or its outlet is arranged at a distance of at most 100 millimeters from the volume of the component to an environment.
  • the expansion tank is provided in particular to ensure a level of the liquid in the components.
  • the expansion tank is arranged in relation to the direction of gravity at a highest point in the cooling circuit, so that the level of the cooling liquid in the cooling circuit can be ensured via the expansion tank.
  • the expansion tank can be elastically deformable, so that the provision and storage of the cooling liquid can be ensured by changing the volume of the expansion tank.
  • the vent valve switches in particular automatically (i.e. automatically). In particular, no electronic control is required for switching between an open valve position and a closed valve position.
  • the vent valve only switches to an open valve position for venting the gas to the environment when a first minimum volume of the gas in the volume of the component is reached.
  • a minimum amount of gas must first have collected in the volume until the vent valve switches to an open valve position.
  • the volume In the open valve position, the volume is fluidly connected to the surroundings (via the vent valve) at least for the gas.
  • the first minimum volume is preferably between 10 and 200 milliliters, in particular between 20 and 150 milliliters, preferably between 50 and 150 milliliters.
  • the vent valve (starting from the open valve position) only switches back to a closed valve position in the volume of the component when a second minimum volume of the gas is reached, the second minimum volume being smaller than the first minimum volume.
  • the second minimum volume is preferably at most 80%, in particular at most 60%, preferably at most 40% of the first minimum volume.
  • the second minimum volume of the gas prefferably be zero milli liters, so that, before the ventilation valve is switched back to the closed valve position, coolant can flow out to the environment via the ventilation valve (in a small amount).
  • the volume In the closed valve position, the volume is separated from the environment (via the vent valve) for the gas as well as for the liquid.
  • the maximum temperature is between 20 and 50 degrees Celsius, preferably between 30 and 40 degrees Celsius, particularly preferably about 35 degrees Celsius.
  • vent valve for temperature-dependent switching has a bimetal or an expansion element.
  • a bimetal can, in particular, deform depending on the temperature.
  • An expansion element can expand and contract in particular depending on the temperature. The bimetal or the expansion element only closes a vent opening of the vent valve when the maximum temperature is reached. If the temperature falls below the maximum, the bimetal is shaped in such a way that the ventilation opening is open.
  • the vent valve switches into a closed valve position or is then in a closed valve position if there is a negative pressure in the volumes of the components of the cooling circuit in relation to the environment.
  • This switchover takes place in particular independently of the first minimum volume and / or second minimum volume.
  • the closed valve position can preferably only be reached when the maximum temperature is undershot.
  • Such pressure-dependent switching valves and the mechanisms required for this are known in principle and can be used here with a ventilation valve.
  • the temperature-dependent switching part of the breather valve can be arranged in parallel or in series with the pressure-dependent switching part of the breather valve.
  • the vent valve preferably has a check valve.
  • the switch positions open valve position / closed valve position can be displayed via the check valve.
  • the check valve can be used to ensure that if the volume of the cooling circuit is suppressed in relation to the environment, the vent valve switches to the closed valve position.
  • the cooling liquid flows through the individual components in the cooling circuit.
  • a gas (fluid, in particular air) present in the cooling liquid is separated and collected in the volumes of the components (regularly at a point in the respective volume that is highest in relation to the direction of gravity).
  • the vent valve should switch to the open valve position so that the collected gas can be discharged to the environment.
  • the vent valve should only switch to the open valve position below a maximum temperature (e.g. 35 degrees Celsius).
  • a maximum temperature e.g. 35 degrees Celsius.
  • vent valve in particular regardless of the maximum temperature or of a temperature-dependent switching of the vent valve; alternatively only when the maximum temperature is undershot) is in an open valve position.
  • a component for the cooling circuit described is also proposed, the component having a volume for receiving a cooling liquid and at least a first connection for supplying the cooling liquid to the volume and a second connection for removing the cooling liquid from the volume, and an automatic one Vent valve for venting a gas from the volume of the component to an environment.
  • coolant or gas can only escape (or be supplied) from the volume via the first connection, the second connection or the vent valve.
  • a vent valve for venting a fluid (gas) from a volume of a component, in particular the described component, to the environment via the vent valve is also proposed, the vent valve only when the temperature falls below a maximum temperature and when a first minimum volume of the fluid in the volume is reached Switch component into an open valve position to vent the fluid to the environment.
  • a first fluid (with a first density, for example a liquid) is stored in the component.
  • a second fluid (with a second density, lower than the first density, for example a gas) can be present in the first fluid, which should / can be discharged from the volume to an environment via the vent valve.
  • vent valve only switches back to a closed valve position when a second minimum volume of the fluid in the volume of the component is reached, the second minimum volume being smaller than the first minimum volume.
  • the vent valve is in a closed valve position when the volume is suppressed from the surroundings.
  • a motor vehicle is also proposed, at least comprising the described cooling circuit and a drive unit for driving the motor vehicle.
  • the cooling circuit 1 shows a motor vehicle 2 with a known cooling circuit 1.
  • the cooling circuit 1 comprises a plurality of components 3 and an expansion tank 4.
  • Each component 3 has a volume 5 for receiving and passing through a cooling liquid 6 and at least a first connection 7 for supplying the cooling liquid 6 to the volume 5 and a second one Connection 8 (see Fig. 3 to 7) for removing the cooling liquid 6 from the volume 5.
  • the components 3 are for the passage of the cooling liquid 6 through the volume 5 or through the volumes 5 (to ensure an exchange of the cooling liquid 6 within the volumes 5) via the connections 7, 8 with one another and for the supply of the cooling liquid 6 with the expansion tank 4 connected.
  • Each of the components 3 has a ventilation line 18 to the expansion tank 4, so that a gas 10 (for example air) is discharged from the respective volume 5 to the expansion tank 4 and via the expansion tank 4 to the surroundings 11 can be.
  • the ventilation lines 18 are z. B. at a highest point of each volume 5 (opposite to the direction of gravity; which extends here into the plane of the drawing), so that the gas 10 accumulating there can flow out to the expansion tank 4 via the vent line 18.
  • the ventilation lines 18 are to be provided in addition to the connecting lines (not shown here) connecting the connections 7, 8.
  • the expansion tank 4 has a central ventilation device.
  • FIG. 2 shows a motor vehicle 2 with a cooling circuit 1.
  • no ventilation lines 18 are provided here. 1 is referred to.
  • the cooling circuit 1 has a plurality of components 3 and an expansion tank 4.
  • Each component 3 has a volume 5 for receiving and passing through a cooling liquid 6 and at least a first connection 7 for supplying the cooling liquid 6 to the volume 5 and a second connection 8 for discharging the cooling liquid 6 from the volume 5.
  • the components 3 are connected to one another and for the supply of the cooling liquid 6 to the expansion tank 4 for the passage of the cooling liquid 6 (these connecting lines are not shown here).
  • Each component 3 has an automatic vent valve 9 for venting a gas 10 from the volume 5 of component 3 to an environment 11.
  • FIG. 3 shows the detail III from FIG. 2. Reference is made to the comments on FIG. 2.
  • the vent valve 9 replaces the vent lines 18 shown in FIG. 1, which connect each volume 3 to the expansion tank 4.
  • FIG. 4 shows a component 3 in a first state.
  • FIG. 5 shows component 3 according to FIG. 4 in a second state.
  • 6 shows component 3 according to FIGS. 4 and 5 in a third state.
  • FIG. 7 shows component 3 according to FIGS. 4 to 6 in a fourth state. 4 to 7 are described together below.
  • the cooling circuit 1 in the operation of the cooling circuit 1 (or in the operation of a motor vehicle 2), the cooling liquid 6 flows through the individual components 3.
  • a gas 10 fluid, in particular air present in the cooling liquid 6 separated and collected (regularly at a point of the respective volume 5 that is highest in relation to the direction of gravity), see FIG. 4.
  • the ventilation valve 9 When a first minimum volume 12 (here 100 milliliters) is reached, the ventilation valve 9 should switch to the open valve position 13 when the temperature falls below the maximum 16, so that the collected gas 10 can be discharged to the environment 11, see FIG. 6 the venting valve 9 remains in the closed valve position 15, and the gas temperature 10 should only be removed in the next cooling phase z.
  • the vent valve 9 should only switch into the open valve position 13 below a maximum temperature 16 (for example 35 degrees Celsius) , see Fig. 6.

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)
  • Motor Or Generator Cooling System (AREA)
  • Cooling Or The Like Of Electrical Apparatus (AREA)

Abstract

L'invention concerne un circuit de refroidissement (1) pour un véhicule automobile (2), comprenant au moins une pluralité de composants (3) et un récipient de compensation (4). Chaque composant (3) possède un volume (5) servant à accueillir et à faire passer un liquide de refroidissement (6) et au moins un premier raccord (7) destiné à acheminer le liquide de refroidissement (6) vers le volume (5) ainsi qu'un deuxième raccord (8) servant à l'évacuation du liquide de refroidissement (6) hors du volume (5). Les composants (3) servant au passage du liquide de refroidissement (6) étant reliés ensemble par le biais des raccords (7, 8) et au récipient de compensation(4) en vue de l'alimentation avec le liquide de refroidissement (6). Chaque composant (3) d'au moins une partie de la pluralité de composants (3) possède respectivement une soupape de purge (9) automatique servant à la purge d'un gaz (10) hors du volume (5) du composant (3) vers un environnement (11). L'invention concerne en outre un composant (3) du circuit de refroidissement (1) ainsi qu'une soupape de purge pour un composant (3).
PCT/EP2019/068113 2018-07-06 2019-07-05 Circuit de refroidissement pour un véhicule automobile et composants du circuit de refroidissement ainsi qu'une soupape de purge Ceased WO2020008040A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE112019003453.7T DE112019003453A5 (de) 2018-07-06 2019-07-05 Kühlkreislauf für ein Kraftfahrzeug und Komponente des Kühlkreislaufs sowie ein Entlüftungsventil

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102018116440.8 2018-07-06
DE102018116440.8A DE102018116440A1 (de) 2018-07-06 2018-07-06 Kühlkreislauf für ein Kraftfahrzeug und Komponente des Kühlkreislaufs sowie ein Entlüftungsventil

Publications (1)

Publication Number Publication Date
WO2020008040A1 true WO2020008040A1 (fr) 2020-01-09

Family

ID=67390049

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2019/068113 Ceased WO2020008040A1 (fr) 2018-07-06 2019-07-05 Circuit de refroidissement pour un véhicule automobile et composants du circuit de refroidissement ainsi qu'une soupape de purge

Country Status (2)

Country Link
DE (2) DE102018116440A1 (fr)
WO (1) WO2020008040A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102021202591A1 (de) 2021-03-17 2022-09-22 Robert Bosch Gesellschaft mit beschränkter Haftung Vorrichtung zum Entlüften eines Kühlkreises, Kühlkreis

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202006008695U1 (de) * 2006-05-24 2007-09-27 Reutter, Heinrich Ventil für Kühlwasserkreislauf in einem Kraftfahrzeug
WO2008107788A1 (fr) * 2007-03-08 2008-09-12 Itw Bailly Comte Circuit de refroidissement pour véhicule à moteur relié à un réservoir de dégazage et véhicule à moteur
EP2187016A1 (fr) * 2008-11-13 2010-05-19 Peugeot Citroen Automobiles SA Circuit de refroidissement moteur
WO2015080659A1 (fr) * 2013-11-29 2015-06-04 Scania Cv Ab Système de refroidissement
WO2017081407A1 (fr) * 2015-11-13 2017-05-18 Mecaplast France Circuit de refroidissement pour un véhicule automobile

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4489883A (en) * 1984-01-19 1984-12-25 General Motors Corporation Temperature regulated dual pressure device
DE10261936B4 (de) * 2002-12-20 2007-09-13 Imt Armaturen Ag Schnellentlüfter
DE102015109690A1 (de) * 2015-06-17 2016-12-22 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Kühlsystem zur Verwendung bei einem Kraftfahrzeug
DE102016009664A1 (de) * 2016-08-09 2018-02-15 Daimler Ag Kühleinrichtung für eine Verbrennungskraftmaschine, insbesondere eines Kraftfahrzeugs

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202006008695U1 (de) * 2006-05-24 2007-09-27 Reutter, Heinrich Ventil für Kühlwasserkreislauf in einem Kraftfahrzeug
WO2008107788A1 (fr) * 2007-03-08 2008-09-12 Itw Bailly Comte Circuit de refroidissement pour véhicule à moteur relié à un réservoir de dégazage et véhicule à moteur
EP2187016A1 (fr) * 2008-11-13 2010-05-19 Peugeot Citroen Automobiles SA Circuit de refroidissement moteur
WO2015080659A1 (fr) * 2013-11-29 2015-06-04 Scania Cv Ab Système de refroidissement
WO2017081407A1 (fr) * 2015-11-13 2017-05-18 Mecaplast France Circuit de refroidissement pour un véhicule automobile

Also Published As

Publication number Publication date
DE112019003453A5 (de) 2021-04-01
DE102018116440A1 (de) 2020-01-09

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