GB1494705A - Vehicle engine cooling system - Google Patents

Vehicle engine cooling system

Info

Publication number
GB1494705A
GB1494705A GB673875A GB673875A GB1494705A GB 1494705 A GB1494705 A GB 1494705A GB 673875 A GB673875 A GB 673875A GB 673875 A GB673875 A GB 673875A GB 1494705 A GB1494705 A GB 1494705A
Authority
GB
United Kingdom
Prior art keywords
fluid
valve device
orifices
pressure
passage
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.)
Expired
Application number
GB673875A
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.)
Plessey Co Ltd
Original Assignee
Plessey Co 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 Plessey Co Ltd filed Critical Plessey Co Ltd
Priority to GB673875A priority Critical patent/GB1494705A/en
Priority to FR7604250A priority patent/FR2300279A1/en
Publication of GB1494705A publication Critical patent/GB1494705A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D23/00—Control of temperature
    • G05D23/185—Control of temperature with auxiliary non-electric power

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Temperature-Responsive Valves (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Safety Valves (AREA)

Abstract

1494705 Fluid-pressure servomotor systems PLESSEY CO Ltd 30 Jan 1976 [18 Feb 1975] 6738/75 Heading G3P A valve device in a vehicle engine cooling system comprises an orifice 6 whose flow area is controlled by a closure member 8 in dependence on the expansion and contraction of a sensor 4 responsive to the temperature of a fluid external to the valve device, an orifice 16 which is opened or closed by a sensor 18 responsive to fluidpressure in the valve device, and a spool valve 24 which is in a first position, in which fluid in the cooling system does not pass through the valve device, when the orifices 6, 16 are closed, and is in a second position, in which fluid from the system does flow through the device, when one or both of the orifices 6, 16 is open. The temperature sensor 4 is a wax element carrying a tapered spigot 8 which is urged to return on contraction of the wax element by a spring 14. The device is described for controlling the flow of fluid from a pump (passage 34) to a hydraulically-driven engine cooling fan (passage 62). When the engine temperature is above a given value and the pressure in the valve device is normal both orifices 6, 16 are closed and spool 24 is biased by spring 46 to shut off fluid gallery 30. Should the engine temperature fall, or the pressure in the device exceed a safe value, the appropriate one of the orifices 6 or 16 will be opened, the pressure above web 26 will fall and the spool 24 will be moved to allow fluid from the pump to pass via ports 28, the gallery 30 and either passages 68, 72, 66 or passage 74 to tank.
GB673875A 1975-02-08 1975-02-08 Vehicle engine cooling system Expired GB1494705A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB673875A GB1494705A (en) 1975-02-08 1975-02-08 Vehicle engine cooling system
FR7604250A FR2300279A1 (en) 1975-02-08 1976-02-17 TEMPERATURE AND PRESSURE SENSITIVE VALVE DEVICE

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB673875A GB1494705A (en) 1975-02-08 1975-02-08 Vehicle engine cooling system

Publications (1)

Publication Number Publication Date
GB1494705A true GB1494705A (en) 1977-12-14

Family

ID=9819889

Family Applications (1)

Application Number Title Priority Date Filing Date
GB673875A Expired GB1494705A (en) 1975-02-08 1975-02-08 Vehicle engine cooling system

Country Status (2)

Country Link
FR (1) FR2300279A1 (en)
GB (1) GB1494705A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2339885B (en) * 1998-07-18 2002-11-13 Reliance Water Controls Ltd Fluid flow control device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2339885B (en) * 1998-07-18 2002-11-13 Reliance Water Controls Ltd Fluid flow control device

Also Published As

Publication number Publication date
FR2300279A1 (en) 1976-09-03

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Legal Events

Date Code Title Description
PS Patent sealed
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
PE20 Patent expired after termination of 20 years

Effective date: 19960129