[go: up one dir, main page]

WO2004025094A1 - Cooling system for a vehicle and vehicle comprising the cooling system - Google Patents

Cooling system for a vehicle and vehicle comprising the cooling system Download PDF

Info

Publication number
WO2004025094A1
WO2004025094A1 PCT/SE2003/001158 SE0301158W WO2004025094A1 WO 2004025094 A1 WO2004025094 A1 WO 2004025094A1 SE 0301158 W SE0301158 W SE 0301158W WO 2004025094 A1 WO2004025094 A1 WO 2004025094A1
Authority
WO
WIPO (PCT)
Prior art keywords
cooling
circuit
cooling circuit
cooling system
vehicle
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/SE2003/001158
Other languages
French (fr)
Inventor
Magnus Bergström
Fredrik Grop
Pontus Evertsson
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.)
Volvo Construction Equipment AB
Original Assignee
Volvo Construction Equipment AB
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 Volvo Construction Equipment AB filed Critical Volvo Construction Equipment AB
Priority to EP03795514A priority Critical patent/EP1552122A1/en
Priority to JP2004535312A priority patent/JP2005539169A/en
Priority to AU2003244290A priority patent/AU2003244290A1/en
Priority to BR0314260-4A priority patent/BR0314260A/en
Publication of WO2004025094A1 publication Critical patent/WO2004025094A1/en
Anticipated expiration legal-status Critical
Priority to US10/906,943 priority patent/US6945200B2/en
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
    • 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
    • F01P2060/00—Cooling circuits using auxiliaries
    • F01P2060/04—Lubricant cooler
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P2060/00—Cooling circuits using auxiliaries
    • F01P2060/04—Lubricant cooler
    • F01P2060/045—Lubricant cooler for transmissions
    • 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
    • F01P3/00—Liquid cooling
    • F01P3/20—Cooling circuits not specific to a single part of engine or machine
    • 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
    • F01P7/02—Controlling of coolant flow the coolant being cooling-air
    • F01P7/04—Controlling of coolant flow the coolant being cooling-air by varying pump speed, e.g. by changing pump-drive gear ratio
    • F01P7/044—Controlling of coolant flow the coolant being cooling-air by varying pump speed, e.g. by changing pump-drive gear ratio using hydraulic drives
    • 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

  • Cooling system for a vehicle and vehicle comprising the cooling system
  • the present invention relates to a cooling system for a vehicle, the system comprising a first cooling circuit coupled to the vehicle engine for cooling the latter, a pump arranged in the first cooling circuit for pumping a coolant to the engine, a second cooling circuit for cooling at least one other component in the vehicle, and means of coupling the second cooling circuit into the first cooling circuit in order to also supply the second cooling circuit with coolant from the pump.
  • Such a cooling system may be used, for example, in a work vehicle, such as a wheel loader, which comprises hydraulic components in the form of working cylinders, for example, for maneuvering/moving an implement.
  • a work vehicle such as a wheel loader
  • hydraulic components in the form of working cylinders, for example, for maneuvering/moving an implement.
  • the hydraulics it is primarily the hydraulic oil and gaskets, seals, etc. which are temperature- sensitive.
  • the coupling means consists of a thermostat, which is operatively controlled by the engine temperature to cut in automatically when the engine temperature exceeds a certain value.
  • the cooling system may furthermore be designed to cool transmission components in the form of gears and shafts in the vehicle axle housings, for example, via the second cooling circuit.
  • a problem with this system is that under certain operating conditions the thermostat will not cut in, with the result that the transmission components do not receive the necessary cooling.
  • An example of this is in so-called leveling, when a mass of earth is pushed ahead of the vehicle. In this application the transmission becomes hot, whilst the engine is cold.
  • a further problem with the previously known system is that if the thermostat fails and does not or is not open, there is no cooling at all of the hydraulic or transmission components.
  • the temperature limit at which the thermostat cuts in is controlled by the engine exhaust. Owing to the ever more stringent requirements governing vehicle exhaust emissions, this temperature limit is also increasing. It is therefore not just simply a matter of adjusting the temperature limit for a specific vehicle to a lower value in order to also provide the second circuit with coolant.
  • the invention will be described below in its application to a work vehicle in the form of a wheel loader. This is to be regarded as a preferred application but is in no way limitative.
  • the invention can be realized, for example in other types of work vehicle, such as a dumper truck or excavator-loader, for example.
  • the invention is furthermore not confined to work vehicles, but could also be applied to other types of vehicle, such as industrial trucks.
  • An object of the invention is to provide a cooling system for a vehicle, which will remedy at least one of the aforementioned problems .
  • the cooling system comprises a line coupled from the first cooling circuit to the second cooling circuit bypassing the coupling means, so that the second cooling circuit is supplied with coolant from the pump via the bypass line even when the coupling means is set to the disconnected position.
  • the term disconnected position signifies that the coupling means is not set to connect the first and second circuits .
  • the coupling means is operatively controlled by the engine temperature in such a way that when the engine temperature exceeds a certain value the coupling means cuts in and connects the second cooling circuit to the first cooling circuit.
  • the coupling means in this case consists of a thermostat.
  • said component consists of a hydraulic component in the form, for example, of a working cylinder.
  • said component consists of a transmission component, such as a gear or shaft arranged in the vehicle transmission.
  • FIG 1 shows a side view of a wheel loader
  • FIG 2 shows a schematic diagram of the cooling system according to the invention.
  • FIG. 1 shows a wheel loader 1.
  • the body of the wheel loader 1 comprises a front body part 2 and a rear body part 3, these parts being joined to one another by an articulated connection.
  • the body parts 2,3 can be rotated in relation to one another about an articulated joint by means of two hydraulic components in the form of working cylinders 4,5 arranged between the two parts.
  • the working cylinders 4,5 are therefore designed for turning the wheel loader 1.
  • the wheel loader 1 furthermore has a load unit 6 and an implement in the form of a shovel 7 arranged on the load unit.
  • the load unit 6 can be raised and lowered in relation to the front part 2 of the vehicle by means of two hydraulic components in the form of two working cylinders 8,9, each of which is connected at one end to the front part of the vehicle 2 and at its other end to the load unit 6.
  • the shovel 7 can be tilted in relation to the load unit 6 by means of a further hydraulic component in the form of a working cylinder 10, which is connected by one end to the front part of the vehicle 2 and by its other end to the shovel 7.
  • Fig. 2 shows a schematic diagram of a cooling system 11 for the wheel loader 1.
  • the wheel loader 1 has an engine 12, which is designed to drive at least one rear drive axle 13.
  • the engine 12 consists of an internal combustion engine in the form of a diesel engine.
  • the cooling system 11 comprises a first cooling circuit 14 coupled to the vehicle engine 12 for cooling the latter.
  • the first cooling circuit 14 here consists of a type of internal circuit in the engine.
  • a pump 15 is arranged in the first cooling circuit 14 for pumping a coolant to the engine 12.
  • the cooling system 11 further comprises a second cooling circuit 16 for increased cooling of the engine 12 and for cooling the vehicle hydraulic components 4,5,8,9,10.
  • the cooling system 11 comprises a radiator 22 arranged in the second cooling circuit 16 for increased cooling of the engine 12.
  • a hydraulic motor 26 is connected to the hydraulic circuit 18 and designed to drive a fan in order to produce an air flow through the radiator 22.
  • a first heat-exchanger 27 is arranged in the second circuit 16 for an exchange of heat between the hydraulic oil in a first hydraulic circuit 18, which is in turn coupled to said hydraulic components (not shown in Fig. 2), and the coolant in the second cooling circuit 16. Cooling of the engine and the hydraulic components is therefore integrated into a single system, with a single pump.
  • the cooling system 11 comprises a second heat-exchanger 28, which is integrated with the first heat exchanger 27 in a single component 17.
  • the second heat exchanger is designed for an exchange of heat between transmission oil in a second hydraulic circuit 19, which is in turn coupled to a transmission component (not shown in Fig. 2), and the coolant in the second cooling circuit 16.
  • the transmission component may consist, for example, of a part that is intended to rotate, such as a shaft and/or a gear in a gearbox in the vehicle. Alternatively or in addition, the transmission component may consist of a part in one of the vehicle wheel axles . Cooling of the engine, the hydraulic components and the transmission components is therefore integrated in a single system, with a single pump.
  • the cooling system 11 further comprises means 20 for coupling the second cooling circuit 16 into the first cooling circuit 14 in order to also provide the second cooling circuit with coolant from the pump 15.
  • the coupling means 20 here consists of a thermostat.
  • the thermostat is controlled by the engine temperature, and more specifically by the coolant temperature.
  • the thermostat is designed to cut in, thereby bringing the second cooling circuit 16 into operation when the engine temperature exceeds a certain value .
  • the cooling system 11 further comprises a line 21 coupled from the first cooling circuit 14 to the second cooling circuit 16 bypassing the thermostat 20 and the engine 12, so that the second cooling circuit is supplied with coolant from the pump via the bypass line 21 even when the thermostat is in the disconnected position.
  • the bypass line 21 is therefore arranged in parallel with the thermostat 20 and the engine 12.
  • the bypass line 21 is designed for a substantially smaller flow than the first cooling circuit, with the object of ensuring that the second circuit 16 is supplied with a certain quantity of coolant even if the engine temperature does not reach the said value at which the thermostat cuts in.
  • the bypass line 21 is therefore designed for a smaller flow than the main line
  • the said hydraulic component may also consist, for example, of a hydraulic motor or a hydraulic pump.
  • the cooling system 11 comprises a further heat-exchanger 23, which can be connected to the first hydraulic circuit 18 for an exchange of heat with air.
  • a means 24 is designed for automatically bringing the further heat exchanger into operation when the hydraulic oil temperature exceeds a specific value.
  • the coupling means 24 consists of a temperature-controlled valve. This coupling means 24 is intended to cut in before the engine thermostat 20 cuts in.
  • cooling system 11 which is designed for cooling/heating multiple different sub-systems (engine, hydraulics, transmission) is that heat differentials can be utilized in order to cool a specific sub-system or to heat another sub- system.
  • the coolant consists at least substantially of water.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • General Details Of Gearings (AREA)
  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
  • Devices That Are Associated With Refrigeration Equipment (AREA)

Abstract

The invention relates to a cooling system (11) for a vehicle. The system comprises a first cooling circuit (14) coupled to the vehicle engine (12) for cooling the latter and a pump (15) arranged in the first cooling circuit (14) for pumping a coolant to the engine. The system further comprises a second cooling circuit (16) for cooling at least one other component in the vehicle, and means (20) for coupling the second cooling circuit (16) into the first cooling circuit (14) in order to also supply the second cooling circuit with coolant from the pump (15). The cooling system further comprises a line (21) coupled from the first cooling circuit to the second cooling circuit bypassing the coupling means (20) so that the second cooling circuit is supplied with coolant from the pump via the bypass line even when the coupling means is set to the disconnected position.

Description

Cooling system for a vehicle and vehicle comprising the cooling system
BACKGROUND OF THE INVENTION AND PRIOR ART The present invention relates to a cooling system for a vehicle, the system comprising a first cooling circuit coupled to the vehicle engine for cooling the latter, a pump arranged in the first cooling circuit for pumping a coolant to the engine, a second cooling circuit for cooling at least one other component in the vehicle, and means of coupling the second cooling circuit into the first cooling circuit in order to also supply the second cooling circuit with coolant from the pump.
Such a cooling system may be used, for example, in a work vehicle, such as a wheel loader, which comprises hydraulic components in the form of working cylinders, for example, for maneuvering/moving an implement. With regard to the hydraulics, it is primarily the hydraulic oil and gaskets, seals, etc. which are temperature- sensitive.
According to a previously known system the coupling means consists of a thermostat, which is operatively controlled by the engine temperature to cut in automatically when the engine temperature exceeds a certain value.
According to this previously known system just one pump is used to provide cooling both for the vehicle engine and for the hydraulic components of the vehicle. One problem with this system is that under certain conditions the thermostat will not cut in, with the result that the hydraulic components do not receive the necessary cooling. One example of this occurs in an extremely cold climate when the vehicle is used in such a way that its hydraulic components become so hot that cooling is required, whilst the engine is not hot enough for the thermostat to cut in.
The cooling system may furthermore be designed to cool transmission components in the form of gears and shafts in the vehicle axle housings, for example, via the second cooling circuit. A problem with this system is that under certain operating conditions the thermostat will not cut in, with the result that the transmission components do not receive the necessary cooling. An example of this is in so-called leveling, when a mass of earth is pushed ahead of the vehicle. In this application the transmission becomes hot, whilst the engine is cold.
A further problem with the previously known system is that if the thermostat fails and does not or is not open, there is no cooling at all of the hydraulic or transmission components.
The temperature limit at which the thermostat cuts in is controlled by the engine exhaust. Owing to the ever more stringent requirements governing vehicle exhaust emissions, this temperature limit is also increasing. It is therefore not just simply a matter of adjusting the temperature limit for a specific vehicle to a lower value in order to also provide the second circuit with coolant.
The invention will be described below in its application to a work vehicle in the form of a wheel loader. This is to be regarded as a preferred application but is in no way limitative. The invention can be realized, for example in other types of work vehicle, such as a dumper truck or excavator-loader, for example. The invention is furthermore not confined to work vehicles, but could also be applied to other types of vehicle, such as industrial trucks.
SUMMARY OF THE INVENTION An object of the invention is to provide a cooling system for a vehicle, which will remedy at least one of the aforementioned problems .
This object is achieved in that the cooling system comprises a line coupled from the first cooling circuit to the second cooling circuit bypassing the coupling means, so that the second cooling circuit is supplied with coolant from the pump via the bypass line even when the coupling means is set to the disconnected position. The term disconnected position signifies that the coupling means is not set to connect the first and second circuits .
According to a preferred embodiment the coupling means is operatively controlled by the engine temperature in such a way that when the engine temperature exceeds a certain value the coupling means cuts in and connects the second cooling circuit to the first cooling circuit. The coupling means in this case consists of a thermostat.
According to another preferred embodiment said component consists of a hydraulic component in the form, for example, of a working cylinder.
According to a further preferred embodiment said component consists of a transmission component, such as a gear or shaft arranged in the vehicle transmission.
Further preferred embodiments and advantages of the invention are set forth in the further subordinate claims and in the following description. BRIEF DESCRIPTION OF THE DRAWINGS
The invention will be described in more detail below with reference to the embodiment shown in the drawings attached, in which: FIG 1 shows a side view of a wheel loader, and
FIG 2 shows a schematic diagram of the cooling system according to the invention.
DETAILED DESCRIPTION OF A PREFERRED EMBODIMENT Fig. 1 shows a wheel loader 1. The body of the wheel loader 1 comprises a front body part 2 and a rear body part 3, these parts being joined to one another by an articulated connection. The body parts 2,3 can be rotated in relation to one another about an articulated joint by means of two hydraulic components in the form of working cylinders 4,5 arranged between the two parts. The working cylinders 4,5 are therefore designed for turning the wheel loader 1.
The wheel loader 1 furthermore has a load unit 6 and an implement in the form of a shovel 7 arranged on the load unit. The load unit 6 can be raised and lowered in relation to the front part 2 of the vehicle by means of two hydraulic components in the form of two working cylinders 8,9, each of which is connected at one end to the front part of the vehicle 2 and at its other end to the load unit 6. The shovel 7 can be tilted in relation to the load unit 6 by means of a further hydraulic component in the form of a working cylinder 10, which is connected by one end to the front part of the vehicle 2 and by its other end to the shovel 7.
Fig. 2 shows a schematic diagram of a cooling system 11 for the wheel loader 1. The wheel loader 1 has an engine 12, which is designed to drive at least one rear drive axle 13. The engine 12 consists of an internal combustion engine in the form of a diesel engine. The cooling system 11 comprises a first cooling circuit 14 coupled to the vehicle engine 12 for cooling the latter. The first cooling circuit 14 here consists of a type of internal circuit in the engine. A pump 15 is arranged in the first cooling circuit 14 for pumping a coolant to the engine 12.
The cooling system 11 further comprises a second cooling circuit 16 for increased cooling of the engine 12 and for cooling the vehicle hydraulic components 4,5,8,9,10. The cooling system 11 comprises a radiator 22 arranged in the second cooling circuit 16 for increased cooling of the engine 12. A hydraulic motor 26 is connected to the hydraulic circuit 18 and designed to drive a fan in order to produce an air flow through the radiator 22.
A first heat-exchanger 27 is arranged in the second circuit 16 for an exchange of heat between the hydraulic oil in a first hydraulic circuit 18, which is in turn coupled to said hydraulic components (not shown in Fig. 2), and the coolant in the second cooling circuit 16. Cooling of the engine and the hydraulic components is therefore integrated into a single system, with a single pump.
The cooling system 11 comprises a second heat-exchanger 28, which is integrated with the first heat exchanger 27 in a single component 17. The second heat exchanger is designed for an exchange of heat between transmission oil in a second hydraulic circuit 19, which is in turn coupled to a transmission component (not shown in Fig. 2), and the coolant in the second cooling circuit 16. The transmission component may consist, for example, of a part that is intended to rotate, such as a shaft and/or a gear in a gearbox in the vehicle. Alternatively or in addition, the transmission component may consist of a part in one of the vehicle wheel axles . Cooling of the engine, the hydraulic components and the transmission components is therefore integrated in a single system, with a single pump.
The cooling system 11 further comprises means 20 for coupling the second cooling circuit 16 into the first cooling circuit 14 in order to also provide the second cooling circuit with coolant from the pump 15. The coupling means 20 here consists of a thermostat. The thermostat is controlled by the engine temperature, and more specifically by the coolant temperature. The thermostat is designed to cut in, thereby bringing the second cooling circuit 16 into operation when the engine temperature exceeds a certain value .
The cooling system 11 further comprises a line 21 coupled from the first cooling circuit 14 to the second cooling circuit 16 bypassing the thermostat 20 and the engine 12, so that the second cooling circuit is supplied with coolant from the pump via the bypass line 21 even when the thermostat is in the disconnected position. The bypass line 21 is therefore arranged in parallel with the thermostat 20 and the engine 12.
The bypass line 21 is designed for a substantially smaller flow than the first cooling circuit, with the object of ensuring that the second circuit 16 is supplied with a certain quantity of coolant even if the engine temperature does not reach the said value at which the thermostat cuts in. The bypass line 21 is therefore designed for a smaller flow than the main line
16. This means that a greater flow of coolant goes to the second cooling circuit 16 after the thermostat has cut in than before it cuts in. In this way a certain cooling/heating of the said hydraulic and/or transmission components is obtained throughout when in operation. Besides a working cylinder, the said hydraulic component may also consist, for example, of a hydraulic motor or a hydraulic pump.
The cooling system 11 comprises a further heat-exchanger 23, which can be connected to the first hydraulic circuit 18 for an exchange of heat with air. A means 24 is designed for automatically bringing the further heat exchanger into operation when the hydraulic oil temperature exceeds a specific value. The coupling means 24 consists of a temperature-controlled valve. This coupling means 24 is intended to cut in before the engine thermostat 20 cuts in.
One advantage with the cooling system 11 described above, which is designed for cooling/heating multiple different sub-systems (engine, hydraulics, transmission) is that heat differentials can be utilized in order to cool a specific sub-system or to heat another sub- system.
The coolant consists at least substantially of water.
The invention must not be regarded as being limited to the examples of embodiment described above, a number of further variants and modifications being feasible within the scope of the following patent claims.

Claims

1. A cooling system (11) for a vehicle (1), the system comprising a first cooling circuit (14) coupled to the vehicle engine (12) for cooling the latter, a pump (15) arranged in the first cooling circuit for pumping a coolant to the engine, a second cooling circuit (16) for cooling at least one other component (4,5,8,9,10,13,25) in the vehicle, and means (20) for coupling the second cooling circuit into the first cooling circuit in order to also supply the second cooling circuit with coolant from the pump, characterized in that the cooling system comprises a line (21) coupled from the first cooling circuit to the second cooling circuit bypassing the coupling means (20) , so that the second cooling circuit is supplied with coolant from the pump via the bypass line even when the coupling means is set to the disconnected position.
2. The cooling system as claimed in claim 1, characterized in that the bypass line (21) is designed for a substantially smaller flow than the line in the first cooling circuit (14).
3. The cooling system as claimed in claim 1 or 2, characterized in that the coupling means (20) is operatively controlled by the engine temperature in such a way that when the engine temperature exceeds a certain value the coupling means is brought into operation and connects the second cooling circuit (16) to the first cooling circuit (14) .
4. The cooling system as claimed in any one of claims 1 to 3, characterized in that the system comprises a radiator (22), which is arranged in the second cooling circuit (16) and is designed for an exchange of heat with air for cooling the coolant.
5. The cooling system as claimed in any one of claims 1 to 4, characterized in that said component (4,5,8,9,10) consists of a hydraulic component .
6. The cooling system as claimed in claim 5, characterized in that said hydraulic component (4,5,8,9,10) consists of a working cylinder.
7. The cooling system as claimed in claim 5 or 6, characterized in that the cooling system comprises a first heat-exchanger (27) which is arranged in the second circuit for an exchange of heat between hydraulic oil in a first hydraulic circuit (18), which is in turn coupled to said hydraulic component, and the coolant in the second cooling circuit.
8. The cooling system as claimed in any one of claims 1 to 4, characterized in that said component consists of a transmission component (13,25) arranged in the vehicle transmission.
9. The cooling system as claimed in claim 8, characterized in that the cooling system comprises a second heat-exchanger (28), which is arranged in the second circuit for an exchange of heat between transmission oil in a second hydraulic circuit (19) , which is in turn coupled to said transmission component (13,25), and the coolant in the second cooling circuit.
10. The cooling system as claimed in claim 7 and 9, characterized in that said first and second heat-exchanger (27,28) are integrated into a single component (17) .
11. The cooling system as claimed in any one of the preceding claims, characterized in that the system comprises a further heat-exchanger (23), which can be connected to the first hydraulic circuit
(18) , for an exchange of heat with air, and that the system comprises means (24) for automatically bringing the further heat exchanger into operation when the hydraulic oil temperature exceeds a specific value.
12. Vehicle characterized in that the vehicle comprises a cooling system (11) according to any one of the preceding claims .
PCT/SE2003/001158 2002-09-13 2003-07-02 Cooling system for a vehicle and vehicle comprising the cooling system Ceased WO2004025094A1 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
EP03795514A EP1552122A1 (en) 2002-09-13 2003-07-02 Cooling system for a vehicle and vehicle comprising the cooling system
JP2004535312A JP2005539169A (en) 2002-09-13 2003-07-02 Cooling device for vehicle and vehicle including the cooling device
AU2003244290A AU2003244290A1 (en) 2002-09-13 2003-07-02 Cooling system for a vehicle and vehicle comprising the cooling system
BR0314260-4A BR0314260A (en) 2002-09-13 2003-07-02 Cooling system for a vehicle and vehicle comprising the cooling system
US10/906,943 US6945200B2 (en) 2002-09-13 2005-03-14 Cooling system for a vehicle and a vehicle comprising the cooling system

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE0202724A SE523669C2 (en) 2002-09-13 2002-09-13 Cooling system for a vehicle and vehicle comprising the cooling system
SE0202724-1 2002-09-13

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US10/906,943 Continuation US6945200B2 (en) 2002-09-13 2005-03-14 Cooling system for a vehicle and a vehicle comprising the cooling system

Publications (1)

Publication Number Publication Date
WO2004025094A1 true WO2004025094A1 (en) 2004-03-25

Family

ID=20288987

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE2003/001158 Ceased WO2004025094A1 (en) 2002-09-13 2003-07-02 Cooling system for a vehicle and vehicle comprising the cooling system

Country Status (9)

Country Link
EP (1) EP1552122A1 (en)
JP (1) JP2005539169A (en)
KR (1) KR20050075334A (en)
CN (1) CN100346064C (en)
AU (1) AU2003244290A1 (en)
BR (1) BR0314260A (en)
SE (1) SE523669C2 (en)
WO (1) WO2004025094A1 (en)
ZA (1) ZA200501388B (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1657416A1 (en) * 2004-11-10 2006-05-17 AGCO GmbH Cooling system for farming tractors
FR2890430A1 (en) * 2005-09-05 2007-03-09 Peugeot Citroen Automobiles Sa Lubricating oil cooling system for automatic gearbox of motor vehicle, has oil heat exchanger connected in downstream of thermostatic device outlet and radiator outlet, and gauging device disposed on outlet line of collector
EP2843243A1 (en) * 2013-07-09 2015-03-04 The Boeing Company Systems and methods for heat balance and transport for aircraft hydraulic systems
US9644898B2 (en) 2013-07-09 2017-05-09 The Boeing Company Systems and methods for heat balance and transport for aircraft hydraulic systems

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4755572B2 (en) * 2006-11-28 2011-08-24 カルソニックカンセイ株式会社 Vehicle heat storage system
FR2954405B1 (en) * 2009-12-22 2012-01-13 Renault Sa COOLING DEVICE FOR MOTOR VEHICLE
DE102010034484B4 (en) * 2010-08-17 2014-03-20 Schaeffler Technologies AG & Co. KG Cooling system with a thermal management module
DE112011105266B4 (en) * 2011-05-20 2016-08-04 Toyota Jidosha Kabushiki Kaisha Fluid control system for a cooling circuit of an internal combustion engine
SE536283C2 (en) * 2011-12-23 2013-07-30 Scania Cv Ab Arrangement and method for cooling coolant in a cooling system of a vehicle
US8683854B2 (en) * 2012-03-30 2014-04-01 Ford Global Technologies, Llc Engine cooling system control

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2682160A1 (en) * 1991-10-07 1993-04-09 Renault Vehicules Ind Cooling system for an internal combustion engine including two separate radiator parts
US5669338A (en) * 1996-04-15 1997-09-23 Caterpillar Inc. Dual circuit cooling systems
WO1999043931A1 (en) * 1998-02-27 1999-09-02 Volvo Wheel Loaders Ab Cooling and heating system
WO2002062624A1 (en) * 2001-02-07 2002-08-15 Volvo Construction Equipment Components Ab A temperature regulating system

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2682160A1 (en) * 1991-10-07 1993-04-09 Renault Vehicules Ind Cooling system for an internal combustion engine including two separate radiator parts
US5669338A (en) * 1996-04-15 1997-09-23 Caterpillar Inc. Dual circuit cooling systems
WO1999043931A1 (en) * 1998-02-27 1999-09-02 Volvo Wheel Loaders Ab Cooling and heating system
WO2002062624A1 (en) * 2001-02-07 2002-08-15 Volvo Construction Equipment Components Ab A temperature regulating system

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1657416A1 (en) * 2004-11-10 2006-05-17 AGCO GmbH Cooling system for farming tractors
GB2420175B (en) * 2004-11-10 2009-10-28 Agco Gmbh & Co Cooling system for farming tractors
FR2890430A1 (en) * 2005-09-05 2007-03-09 Peugeot Citroen Automobiles Sa Lubricating oil cooling system for automatic gearbox of motor vehicle, has oil heat exchanger connected in downstream of thermostatic device outlet and radiator outlet, and gauging device disposed on outlet line of collector
EP2843243A1 (en) * 2013-07-09 2015-03-04 The Boeing Company Systems and methods for heat balance and transport for aircraft hydraulic systems
US9644898B2 (en) 2013-07-09 2017-05-09 The Boeing Company Systems and methods for heat balance and transport for aircraft hydraulic systems
US9644648B2 (en) 2013-07-09 2017-05-09 The Boeing Company Systems and methods for heat balance and transport for aircraft hydraulic systems
US10294967B2 (en) 2013-07-09 2019-05-21 The Boeing Company Systems and methods for heat balance and transport for aircraft hydraulic systems

Also Published As

Publication number Publication date
JP2005539169A (en) 2005-12-22
SE0202724D0 (en) 2002-09-13
CN1682019A (en) 2005-10-12
ZA200501388B (en) 2006-07-26
SE523669C2 (en) 2004-05-11
KR20050075334A (en) 2005-07-20
SE0202724L (en) 2004-03-14
EP1552122A1 (en) 2005-07-13
AU2003244290A1 (en) 2004-04-30
BR0314260A (en) 2005-07-19
CN100346064C (en) 2007-10-31

Similar Documents

Publication Publication Date Title
EP1058775B1 (en) Cooling and heating system
CA3012141C (en) Temperature control system for machine and method of operating same
US5056601A (en) Air compressor cooling system
US7261068B1 (en) Vehicular thermostatically-controlled dual-circuit cooling system and associated method
US20130153180A1 (en) Cooling System With Dual Reversing Fans
WO2004025094A1 (en) Cooling system for a vehicle and vehicle comprising the cooling system
US4069972A (en) Heat systems for vehicles
US6945200B2 (en) Cooling system for a vehicle and a vehicle comprising the cooling system
JP2015508867A (en) Dual radiator engine cooling module-single coolant loop
EP1616105B1 (en) System and method for controlling viscosity of a fluid and a working vehicle containing such a system
US4529061A (en) Fluid level control system
DE102019105893A1 (en) Thermal management system and method for a vehicle drive system
US5810110A (en) Tandem power steering system with heat sink
RU2374116C2 (en) Cooling system of hydraulic steering amplifier of vehicle
DE102019106162A1 (en) HEAT MANAGEMENT SYSTEM FOR A VEHICLE DRIVE SYSTEM
EP1657416B1 (en) Cooling system for farming tractors
GB1600033A (en) Cooling systems for vehicle engines in combination with heating systems for vehicle passenger compartments
EP1941165B1 (en) Cooling system for a work machine
JP5037297B2 (en) Work vehicle
EP2944785A1 (en) Vehicle driven by an internal combustion engine and provided with a liquid cooling system
JP2001132710A (en) Self-propelled work machine
NL1028122C1 (en) Motor vehicle, e.g. lorry, comprises hydraulic pump connected to engine, hydraulic circuit containing pressure valve and heat exchanger
Boelter et al. Packaged Hydraulics for Productivity Improvement-Case History: ASV Inc. All Terrain Vehicle

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EC EE ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NI NO NZ OM PG PH PL PT RO RU SC SD SE SG SK SL SY TJ TM TN TR TT TZ UA UG US UZ VC VN YU ZA ZM ZW

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): GH GM KE LS MW MZ SD SL SZ TZ UG ZM ZW AM AZ BY KG KZ MD RU TJ TM AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LU MC NL PT RO SE SI SK TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG

121 Ep: the epo has been informed by wipo that ep was designated in this application
WWE Wipo information: entry into national phase

Ref document number: 2003795514

Country of ref document: EP

WWE Wipo information: entry into national phase

Ref document number: 2005/01388

Country of ref document: ZA

Ref document number: 200501388

Country of ref document: ZA

WWE Wipo information: entry into national phase

Ref document number: 2004535312

Country of ref document: JP

WWE Wipo information: entry into national phase

Ref document number: 1020057003820

Country of ref document: KR

WWE Wipo information: entry into national phase

Ref document number: 10906943

Country of ref document: US

Ref document number: 2003821752X

Country of ref document: CN

WWP Wipo information: published in national office

Ref document number: 2003795514

Country of ref document: EP

WWP Wipo information: published in national office

Ref document number: 1020057003820

Country of ref document: KR