EP3301274A1 - Kühlschaltkreis für ein kraftfahrzeug - Google Patents

Kühlschaltkreis für ein kraftfahrzeug Download PDF

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Publication number
EP3301274A1
EP3301274A1 EP17194021.6A EP17194021A EP3301274A1 EP 3301274 A1 EP3301274 A1 EP 3301274A1 EP 17194021 A EP17194021 A EP 17194021A EP 3301274 A1 EP3301274 A1 EP 3301274A1
Authority
EP
European Patent Office
Prior art keywords
degassing
cooling
cooling loop
loop
cooling circuit
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
EP17194021.6A
Other languages
English (en)
French (fr)
Other versions
EP3301274B1 (de
Inventor
Jean-Claude Quevallier
Philippe PINEAU
Christophe PECH
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.)
Novares France SAS
Original Assignee
Novares France SAS
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Filing date
Publication date
Application filed by Novares France SAS filed Critical Novares France SAS
Publication of EP3301274A1 publication Critical patent/EP3301274A1/de
Application granted granted Critical
Publication of EP3301274B1 publication Critical patent/EP3301274B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • 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
    • F01P7/165—Controlling of coolant flow the coolant being liquid by thermostatic control characterised by systems with two or more loops
    • 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
    • F01P2050/00—Applications
    • F01P2050/24—Hybrid vehicles
    • 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

Definitions

  • the present invention relates to a cooling device and a cooling method for motor vehicles.
  • thermal regulation loop is meant a circuit in which circulates a heat transfer fluid which regulates the temperature of a mechanical member by removing the thermal energy produced during the operation of this body.
  • certain equipment such as the degassing box, may be common to several control loops.
  • Degassing is a function of the engine in which the air or gas bubbles that are present in the coolant are purged.
  • Degassing is an important function because the presence of air bubbles in the coolant has a deleterious effect on the quality of the cooling, and therefore does not allow the engine operation in optimal conditions; this can lead to uncontrolled thermal conditions with consequences in terms of reliability or durability of organs and environmental nuisance.
  • the high temperature control loop has a constant need for degassing because the coolant which is in contact with hot spots of the engine - cooling of the cylinder head - can vaporize punctually and therefore, generate gas bubbles continuously while the control loops at low or very low temperature have a need for degassing when they start up but do not generate gas bubbles during their operation.
  • a degassing box common to a high temperature cooling loop and to one or more cooling loops at a lower temperature is have a detrimental effect on cooling operation at lower temperature.
  • an object of the invention is to provide a cooling circuit with several cooling loops pooling the degassing box without compromising the operation of each cooling loop.
  • the invention relates to a cooling circuit for a motor vehicle comprising a first cooling loop designed to thermoregulate a first member and at least a second cooling loop designed to thermoregulate a second member, the first loop.
  • I and at least one second cooling loop are fluidly connected to a single degassing box characterized in that each cooling loop connected to said degassing box comprises a degassing module, the degassing module being provided with a porous element hydrophobic by which escape air bubbles contained in said cooling loop I, II; III to join the degassing box.
  • the invention thus provides a cooling circuit which ensures continuous degassing of multiple cooling loops with a single degassing box.
  • each cooling loop comprises a thermostatic control box on which is disposed the degassing module.
  • each cooling loop comprises a degassing branch connecting the degassing module of each cooling loop to the degassing box.
  • the degassing module comprises a body in which circulates the coolant of a cooling loop and a cover in which the degassing branch is stitched, the hydrophobic porous element being interposed between the body and lid.
  • the cover may have an array of ribs against which the porous hydrophobic element bears.
  • the hydrophobic porous element may comprise a porous membrane superimposed on a prefiltering medium.
  • a peripheral seal seals the hydrophobic porous element.
  • the degassing module may have an input connection and an output connection offset relative to each other.
  • each cooling loop comprises at least one pump, an exchanger, a radiator.
  • the invention proposes a cooling circuit 1 for a vehicle comprising a plurality of cooling loops.
  • the cooling circuit 1 comprises three cooling loops, namely: a cooling loop with high temperature I, a low temperature cooling loop II and a very low temperature cooling loop III.
  • the high temperature cooling loop I comprises a high temperature exchanger 2 with the vehicle's heat engine, a high temperature radiator 3.
  • a pump 4 circulates a glycol type cooling fluid.
  • thermostatic control unit 5 which controls the cooling fluid circuit according to its operating temperature.
  • a stitching is provided on the thermostatic housing 5 to make a connection with a single degassing box 6.
  • the thermostatic control box 5 is equipped with a degassing module 8 which has a porous and hydrophobic element.
  • hydrophobic porous element is meant an element which allows the passage of air or gas but which remains liquid-tight.
  • the hydrophobic porous element 11 in the degassing module 10 in which the cooling fluid circulates in the high temperature cooling loop, the hydrophobic porous element 11 being in line with the a branch of degassing 9 is the so-called branch that connects the thermostatic control box to the degassing box 6.
  • the hydrophobic porous element 11 is a complex, as can be seen in the figure 3 , comprising a porous membrane 13 - for example, a polymer such as a polypropylene, a polyethylene or a PTFE - and a prefiltering medium 14 which makes it possible to prevent clogging of the microperforations of which the porous membrane 13 is provided.
  • the hydrophobic porous member 11 may further include a seal 15; this seal 15 may be of elastomeric material and may preferably be fixed on the microporous membrane 13 and the prefilter media 14 by overmolding.
  • the porous hydrophobic element 11 is interposed between the body 10 and a cover 16 which may be provided with a network of ribs 17; these ribs 17 serve to provide a support for the porous hydrophobic element 11.
  • hydrophobic porous element not with a hydrophobic porous medium in the form of a membrane but with a hydrophobic porous media in the form of a porous ceramic or a sintered powder.
  • the figure 5 shows an alternative embodiment of the degassing module 8 in which the inlet connection and the outlet connection of the degassing module 8 are offset relative to each other so that the flow of coolant maintain the hydrophobic porous element 11 in a state of cleanliness by preventing impurities from being deposited therein.
  • the low temperature cooling loop II comprises a low temperature exchanger 20 with, for example, power electronics components (inverter, charger ...) of the electric propulsion chain or a low temperature radiator 30.
  • a pump 40 ensures the circulation of the cooling fluid.
  • the low temperature cooling loop II is also provided with a thermostatic control unit 50 which makes it possible to control the cooling fluid circuit as a function of the temperature.
  • a tapping is provided on the thermostatic box 50 to make a connection with the degassing box 6.
  • a degassing branch 90 ensures the fluid connection between the thermostatic box 50 and the degassing box 6.
  • a degassing module 80 is placed for example on the thermostatic box 50 to allow the extraction of any air bubbles that are present in suspension in the coolant.
  • the very low temperature cooling loop III comprises a very low temperature exchanger 200 with, for example, the battery of the electric propulsion system and a very low temperature radiator 300.
  • a pump 400 circulates the cooling fluid.
  • the very low temperature cooling loop III is also provided with a thermostatic control unit 500 which makes it possible to control the cooling fluid circuit as a function of the temperature.
  • a tapping is provided on the thermostatic housing very low temperature 500 to make a connection with the degassing box 6.
  • a degassing branch 900 ensures the fluidic connection between the thermostatic box 500 and the degassing box 6.
  • a degassing module 800 is placed, for example, on the thermostatic housing to allow the extraction of any air bubbles that are present in suspension in the coolant.
  • the cooling device which comprises three cooling loops has a single degassing box 6 which is therefore common to the three degassing loops.
  • the operation of the cooling device is as follows.
  • Each of the three cooling loops I, II, III has a need for degassing which is satisfied by the connection of each of the cooling loops to the degassing box 6.
  • the cooling fluid of each of the high temperature, low temperature and very low temperature cooling loops is purged of its gas bubbles in a continuous manner which contributes to an optimal operation of the vehicle .
  • the purge of the cooling loops is also performed continuously during the operation of the loops at their respective nominal temperatures.
  • the degassing box 6 which is unique and which is common to the three cooling loops I, II, III is permanently connected to the three cooling loops.
  • a point that is important to note is that the 9,90,900 degassing branches do not carry liquid, the latter are fed by the gas-free degassing modules 8, 80, 800 exclusively when the operation of the engine generates air bubbles. air in the cooling loops.
  • An advantage of this arrangement is that the high, low and very low temperature cooling loops are provided with their own means of degassing.
  • each cooling loop is provided with its own degassing means: degassing box and connecting pipes.
  • the degassing modules can be configured as independent boxes or can be integrated into a radiator or exchanger in addition to the thermostatic box as shown in the figures. Degassing modules are easy to integrate into existing cooling circuits.
  • the invention further guarantees a degassing including short trips in which the thermostatic housing remains closed.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Cooling Or The Like Of Electrical Apparatus (AREA)
  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)
EP17194021.6A 2016-09-30 2017-09-29 Kühlkreislauf für ein kraftfahrzeug Active EP3301274B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1659465A FR3057024B1 (fr) 2016-09-30 2016-09-30 Circuit de refroidissement pour un vehicule automobile

Publications (2)

Publication Number Publication Date
EP3301274A1 true EP3301274A1 (de) 2018-04-04
EP3301274B1 EP3301274B1 (de) 2019-08-28

Family

ID=58162701

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17194021.6A Active EP3301274B1 (de) 2016-09-30 2017-09-29 Kühlkreislauf für ein kraftfahrzeug

Country Status (3)

Country Link
EP (1) EP3301274B1 (de)
ES (1) ES2758228T3 (de)
FR (1) FR3057024B1 (de)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020224959A1 (de) * 2019-05-09 2020-11-12 Norma Germany Gmbh Vorrichtung zum entgasen von einer in einer flüssigkeitsleitung strömenden flüssigkeit
WO2021235991A1 (en) 2020-05-19 2021-11-25 Scania Cv Ab Cooling system and vehicle comprising such a cooling system
WO2021235990A1 (en) 2020-05-19 2021-11-25 Scania Cv Ab Cooling system and vehicle comprising such a cooling system
WO2022048842A1 (de) * 2020-09-01 2022-03-10 Bayerische Motoren Werke Aktiengesellschaft Ausgleichsbehälter für ein kühlmittelsystem und kraftfahrzeug
WO2024115949A1 (en) * 2022-11-30 2024-06-06 Volvo Truck Corporation Active air pressure for coolant system
WO2024115945A1 (en) * 2022-11-29 2024-06-06 Volvo Truck Corporation Coolant expansion tank for fuel cell stack vehicle cooling system
US12286007B2 (en) 2020-04-29 2025-04-29 Scania Cv Ab Thermal management system, and vehicle

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3107210B1 (fr) * 2020-02-18 2023-05-19 Psa Automobiles Sa Dispositif de conditionnement thermique du groupe motopropulseur et de l’habitacle de vehicules electriques ou hybrides et procede de mise en œuvre dudit dispositif
WO2024252168A1 (en) * 2023-06-05 2024-12-12 Volvo Truck Corporation A coolant system for a vehicle

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1357064A (fr) * 1963-02-20 1964-04-03 Capsule de bouchage perméable aux gaz
GB2101293A (en) * 1981-05-08 1983-01-12 Nohab Diesel Ab Cooling system for IC engines
US20030127528A1 (en) * 2002-01-04 2003-07-10 Peri Sabhapathy Hybrid vehicle powertrain thermal management system and method for cabin heating and engine warm up
WO2004076022A1 (en) * 2003-02-27 2004-09-10 Scania Cv Ab (Publ) Arrangement for the separation of gas from a fluid
JP2005315116A (ja) * 2004-04-27 2005-11-10 Toyota Motor Corp 冷却液流路の空気抜き構造
DE102011056282A1 (de) * 2011-12-05 2013-06-06 Still Gmbh Kühlsystem für ein Flurförderzeug
EP2615273A1 (de) * 2012-01-11 2013-07-17 Volvo Car Corporation Kühlsystem für einen Motor

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1357064A (fr) * 1963-02-20 1964-04-03 Capsule de bouchage perméable aux gaz
GB2101293A (en) * 1981-05-08 1983-01-12 Nohab Diesel Ab Cooling system for IC engines
US20030127528A1 (en) * 2002-01-04 2003-07-10 Peri Sabhapathy Hybrid vehicle powertrain thermal management system and method for cabin heating and engine warm up
WO2004076022A1 (en) * 2003-02-27 2004-09-10 Scania Cv Ab (Publ) Arrangement for the separation of gas from a fluid
JP2005315116A (ja) * 2004-04-27 2005-11-10 Toyota Motor Corp 冷却液流路の空気抜き構造
DE102011056282A1 (de) * 2011-12-05 2013-06-06 Still Gmbh Kühlsystem für ein Flurförderzeug
EP2615273A1 (de) * 2012-01-11 2013-07-17 Volvo Car Corporation Kühlsystem für einen Motor

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2022531951A (ja) * 2019-05-09 2022-07-12 ノルマ ジャーマニー ゲーエムベーハー 液体配管を流れる液体を脱気するための装置
WO2020224959A1 (de) * 2019-05-09 2020-11-12 Norma Germany Gmbh Vorrichtung zum entgasen von einer in einer flüssigkeitsleitung strömenden flüssigkeit
US12286007B2 (en) 2020-04-29 2025-04-29 Scania Cv Ab Thermal management system, and vehicle
US12397613B2 (en) * 2020-05-19 2025-08-26 Scania Cv Ab Cooling system and vehicle comprising such a cooling system
CN115516194A (zh) * 2020-05-19 2022-12-23 斯堪尼亚商用车有限公司 冷却系统和包括此类冷却系统的车辆
US20230145211A1 (en) * 2020-05-19 2023-05-11 Scania Cv Ab Cooling system and vehicle comprising such a cooling system
EP4153848A4 (de) * 2020-05-19 2024-07-03 Scania CV AB Kühlsystem und fahrzeug mit einem solchen kühlsystem
EP4153849A4 (de) * 2020-05-19 2024-07-10 Scania CV AB Kühlsystem und fahrzeug mit einem solchen kühlsystem
WO2021235990A1 (en) 2020-05-19 2021-11-25 Scania Cv Ab Cooling system and vehicle comprising such a cooling system
WO2021235991A1 (en) 2020-05-19 2021-11-25 Scania Cv Ab Cooling system and vehicle comprising such a cooling system
CN115516194B (zh) * 2020-05-19 2025-09-02 斯堪尼亚商用车有限公司 冷却系统和包括此类冷却系统的车辆
EP4667255A3 (de) * 2020-05-19 2026-03-11 Scania CV AB Kühlsystem und fahrzeug mit einem solchen kühlsystem
EP4667256A3 (de) * 2020-05-19 2026-03-11 Scania CV AB Kühlsystem und fahrzeug mit einem solchen kühlsystem
WO2022048842A1 (de) * 2020-09-01 2022-03-10 Bayerische Motoren Werke Aktiengesellschaft Ausgleichsbehälter für ein kühlmittelsystem und kraftfahrzeug
WO2024115945A1 (en) * 2022-11-29 2024-06-06 Volvo Truck Corporation Coolant expansion tank for fuel cell stack vehicle cooling system
WO2024115949A1 (en) * 2022-11-30 2024-06-06 Volvo Truck Corporation Active air pressure for coolant system

Also Published As

Publication number Publication date
ES2758228T3 (es) 2020-05-04
FR3057024B1 (fr) 2018-10-26
FR3057024A1 (fr) 2018-04-06
EP3301274B1 (de) 2019-08-28

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