Internal-combustion engines – Cooling – Automatic coolant flow control
Patent
1991-03-06
1993-01-26
Kamen, Noah P.
Internal-combustion engines
Cooling
Automatic coolant flow control
192 82T, F01P 702
Patent
active
051814838
ABSTRACT:
An automatically coupling fan for the cooling system of automobiles, comprising a thermostat, in the form of a gas-tight container with a solid and a flexible wall, containing a liquid whose steam temperature within a predetermined temperature range couples the fan to the drive shaft of the motor by means of a friction clutch, characterized in that the thermostat has the form of a metal bellows which turns along with the water pump shaft. The bellows dimensions are such that the water ring generated during rotation of the thermostat by to the centrifugal forces exerted on the thermostat filler largely remains outside of the effective bellows cross-section (a.sub.w) and the fan is coupled in a predetermined temperature range almost exclusively by the filler steam pressure arising in the thermostat, or the filler quantity of the liquid medium in the thermostat is such that the water ring generated by the centrifugal forces working on the filler with the rotation of the thermostat in conjunction with the water pump shaft largely remains outside of the effective cross-section (a.sub.w) of the metal bellows and the fan is coupled in a predetermined temperature range almost exclusively by the steam pressure arising in the thermostat.
REFERENCES:
patent: 1820035 (1931-08-01), Stokes
patent: 2005468 (1935-06-01), Modine
patent: 2438161 (1948-03-01), Greenlee
patent: 2652816 (1953-09-01), Dodge
patent: 3053363 (1962-09-01), Weir
patent: 3103308 (1963-09-01), Wolfram
patent: 3792697 (1974-02-01), Walter
patent: 4081066 (1978-03-01), Ryba
patent: 4304321 (1981-12-01), Wong
Kamen Noah P.
Mair-Egg Harald
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