EP0343785A2 - Kühlungsanlage - Google Patents

Kühlungsanlage Download PDF

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Publication number
EP0343785A2
EP0343785A2 EP89304027A EP89304027A EP0343785A2 EP 0343785 A2 EP0343785 A2 EP 0343785A2 EP 89304027 A EP89304027 A EP 89304027A EP 89304027 A EP89304027 A EP 89304027A EP 0343785 A2 EP0343785 A2 EP 0343785A2
Authority
EP
European Patent Office
Prior art keywords
radiator
turbine
fan
coolant
cooling system
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.)
Withdrawn
Application number
EP89304027A
Other languages
English (en)
French (fr)
Other versions
EP0343785A3 (de
Inventor
Bryan Nigel Victor Parsons
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.)
Jaguar Land Rover Ltd
Original Assignee
Jaguar Cars Ltd
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 Jaguar Cars Ltd filed Critical Jaguar Cars Ltd
Publication of EP0343785A2 publication Critical patent/EP0343785A2/de
Publication of EP0343785A3 publication Critical patent/EP0343785A3/de
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P5/00—Pumping cooling-air or liquid coolants
    • F01P5/02—Pumping cooling-air; Arrangements of cooling-air pumps, e.g. fans or blowers
    • F01P5/04—Pump-driving arrangements

Definitions

  • the present invention relates to cooling systems and in particular to cooling systems for internal combustion engines.
  • an engine driven pump circulates coolant from the cooling jacket of the engine, through a radiator and back to the cooling jacket.
  • a thermostatically controlled bypass is provided so that all or part of the flow of coolant may be circulated through the cooling jacket without passing through the radiator. Consequently, from start-up while the engine is still cold, the thermostat will prevent coolant flowing through the radiator and as the engine gradually warms up, flow of coolant through the thermostat from the radiator will increase.
  • a fan is provided to cause air to flow through the radiator to assist heat exchange.
  • This fan may be driven directly from the engine and may be driven continuously or may be arranged to cut-in at some temperature, under for example the control of a viscous clutch or similar means.
  • the fan may be driven electrically under suitable control. Whether driven directly by the engine or electrically, the fan imposes a significant power loss on the engine output. Controlling the fan so that it only operates at higher temperatures requires sophisticated control means which adds significantly to the cost of the system.
  • a cooling system for an internal combustion engine having an engine driven pump for circulating coolant around a circuit including a cooling jacket and a radiator, a bypass in parallel with the radiator and thermostatic means for controlling flow through the bypass and radiator; and a fan for forcing air through the radiator, characterised in that said fan is driven by means of a turbine, said turbine being disposed in the return between the radiator and cooling jacket.
  • the flow of coolant in the cooling system is used to drive the fan. This may be achieved with minimal additional power consumption and the thermostat which controls the rate of flow of coolant through the radiator will also control the speed of the fan.
  • an engine driven pump 10 circulates coolant from a water jacket 11 via outlet 12, to the inlet 13 of a radiator 14 via line 15.
  • the outlet 16 from the radiator 14 is connected to the inlet 17 of water jacket 11 by return line 18.
  • a bypass 19 interconnects lines 15 and 18, a thermostatic valve 20 being provided at the junction between return line 18 and bypass 19 to control the relative rates of flow of coolant from return line 18 and bypass 19 to the inlet 17.
  • a turbine 21 is located in a housing 22 which forms part of the return line 18.
  • the turbine 21 is mounted on a shaft 23 which is located in suitable bearings and extends through the wall of housing 22, sealing means being provided to prevent leakage of coolant.
  • a fan 25 is attached to the end of shaft 23 which extends from the housing 22, said fan 25 upon rotation of the shaft 23 due to flow of coolant over the turbine 21 from the outlet 16 of radiator 14 to the inlet 17 of cooling jacket 11, being arranged to draw air through the radiator 14.
  • thermostatic valve 20 In operation, when the engine and coolant are cold, the thermostatic valve 20 will close connection between the return line 18 and inlet 17 and will fully open the connection between bypass 19 and inlet 17.
  • the engine driven pump 10 will consequently recirculate coolant from the water jacket 11, via line 15 and bypass 19 back into the coolant jacket via inlet 17. Under these conditions, there will be no flow of coolant through the radiator 14 or past the turbine 21 and consequently the fan 25 will remain stationary.
  • the connection between return line 18 and inlet 17 is gradually opened so that coolant will begin to flow through the radiator 14.
  • this coolant flows past the turbine 21, it will rotate the fan 25.
  • the speed of the fan 25 and hence the amount of air drawn through the radiator 14 will depend upon the rate of flow of coolant through the radiator 14 which in turn is controlled by the thermostatic valve 20 as a function of the temperature of the coolant.
  • the system described above thus provides a cooling system in which the speed of the fan 25 will be automatically adjusted so that it will be stationary or slow when the coolant temperature is low and the radiator is only required to remove a small amount of heat and will be fast when the coolant temperature is high and the radiator is required to remove large amounts of heat.
  • the fan is driven directly by the turbine
  • the turbine may alternatively be arranged to drive the fan through suitable drive means, for example a belt and pulley system.
  • suitable drive means may also include means for increasing or reducing the drive ratio.
  • the thermostatic valve may be located in any suitable position in which it will control the rate of flow through the radiator and the bypass.
  • a low powered electric motor may be provided to assist the turbine at low engine speeds.
  • This motor may be mounted directly on the turbine shaft. Switching means responsive to engine speed and coolant temperature will energise the motor when the speed of the engine is below a predetermined value and the coolant is at or above its normal operating temperature.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Supercharger (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
EP89304027A 1988-05-26 1989-04-24 Kühlungsanlage Withdrawn EP0343785A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8812523 1988-05-26
GB888812523A GB8812523D0 (en) 1988-05-26 1988-05-26 Cooling systems

Publications (2)

Publication Number Publication Date
EP0343785A2 true EP0343785A2 (de) 1989-11-29
EP0343785A3 EP0343785A3 (de) 1990-02-28

Family

ID=10637601

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89304027A Withdrawn EP0343785A3 (de) 1988-05-26 1989-04-24 Kühlungsanlage

Country Status (3)

Country Link
EP (1) EP0343785A3 (de)
JP (1) JPH0219607A (de)
GB (1) GB8812523D0 (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7008175B2 (en) 2003-06-03 2006-03-07 Saied Fathi Radiator cooling fan replacement to increase engine efficiency
DE19820388B4 (de) * 1997-05-17 2008-09-11 Volkswagen Ag Kraftfahrzeug-Vorderwagen mit Brennkraftmaschine, Wärmetauscher und Lüfter
WO2013164463A1 (en) * 2012-05-04 2013-11-07 Inergy Automotive Systems Research (Société Anonyme) Method and system for detecting a leak in a fuel system

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6868809B1 (en) * 2004-05-27 2005-03-22 Borgwarner Inc. Coolant motor fan drive

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE871855C (de) * 1942-04-25 1953-03-26 Maschf Augsburg Nuernberg Ag Kuehlanlage fuer Fahrzeugmotoren
DE1104263B (de) * 1957-02-22 1961-04-06 Daimler Benz Ag Einrichtung zum Antrieb von Kuehlluftgeblaesen, insbesondere fuer Kraftfahrzeuge
GB1014481A (en) * 1961-02-03 1965-12-22 Humber Ltd Improvements in circulatory liquid cooling systems for internal combustion engines
DE2704955A1 (de) * 1977-02-07 1978-08-10 Walter Holzer Kuehlsystem, insbesondere fuer kraftfahrzeuge

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE871855C (de) * 1942-04-25 1953-03-26 Maschf Augsburg Nuernberg Ag Kuehlanlage fuer Fahrzeugmotoren
DE1104263B (de) * 1957-02-22 1961-04-06 Daimler Benz Ag Einrichtung zum Antrieb von Kuehlluftgeblaesen, insbesondere fuer Kraftfahrzeuge
GB1014481A (en) * 1961-02-03 1965-12-22 Humber Ltd Improvements in circulatory liquid cooling systems for internal combustion engines
DE2704955A1 (de) * 1977-02-07 1978-08-10 Walter Holzer Kuehlsystem, insbesondere fuer kraftfahrzeuge

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19820388B4 (de) * 1997-05-17 2008-09-11 Volkswagen Ag Kraftfahrzeug-Vorderwagen mit Brennkraftmaschine, Wärmetauscher und Lüfter
US7008175B2 (en) 2003-06-03 2006-03-07 Saied Fathi Radiator cooling fan replacement to increase engine efficiency
WO2013164463A1 (en) * 2012-05-04 2013-11-07 Inergy Automotive Systems Research (Société Anonyme) Method and system for detecting a leak in a fuel system
US9702782B2 (en) 2012-05-04 2017-07-11 Inergy Automotive Systems Research (Societe Anonym) Method and system for detecting a leak in a fuel system
EP2667008A1 (de) * 2012-05-25 2013-11-27 Inergy Automotive Systems Research (Société Anonyme) Verfahren und System zur Erkennung eines Lecks in einem Kraftstoffsystem

Also Published As

Publication number Publication date
GB8812523D0 (en) 1988-06-29
JPH0219607A (ja) 1990-01-23
EP0343785A3 (de) 1990-02-28

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