Automatic control valves

Details Automatic control valves Automatic control valves

1977-06-01

1979-12-04

Myhre, Charles J.

Internal-combustion engines

Cooling

Automatic coolant flow control

123 4149, 192 82T, 236 35, F01P 712

Patent

active

041766300

ABSTRACT:
The invention provides a pneumatic control system for a pneumatically operated clutch in the drive to a cooling fan of a vehicle engine. There are two thermostat valves arranged in series in the pneumatic control line. One valve is positioned in the supercharged air passage and the other valve is in the liquid coolant passage. If the temperature at either valve becomes excessive the supply line 22 is connected to relief and the fan clutch automatically engages.

REFERENCES:
patent: 2125889 (1938-08-01), Crump
patent: 2231292 (1941-02-01), Neugebauer
patent: 2452007 (1948-10-01), Weybrew
patent: 3203499 (1965-08-01), Bentz
patent: 3388694 (1968-06-01), Elmer
patent: 3684397 (1972-08-01), Elmer
patent: 3872842 (1975-03-01), Medley
patent: 3902663 (1975-09-01), Elmer
patent: 3961606 (1976-06-01), Wong
patent: 4062188 (1977-12-01), Cutler

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