Internal-combustion engines – Cooling – Automatic coolant flow control
Patent
1984-08-09
1985-09-10
Cuchlinski, Jr., William A.
Internal-combustion engines
Cooling
Automatic coolant flow control
123 4112, F01P 504, F01P 1110
Patent
active
045399433
ABSTRACT:
An engine cooling system has a cross-flow fan disposed transversely in a car body between a radiator and an engine having a rotatable shaft coupled to and driven by a hydraulic motor which is actuated by an engine-operated hydraulic pump. The hydraulic pump and the hydraulic motor are interconnected by supply and return passages, the supply passage having a directional control valve for selectively connecting the supply passage to the return passage in bypassing relation to the hydraulic motor to interrupt operation of the fan. A second directional control valve is connected parallel to the first-mentioned directional control valve for selectively connecting the supply passage to the return passage in bypassing relation to the hydraulic motor. Hydraulic cylinders are respectively controlled by these first and second directional control valves for respectively actuating a radiator shutter and a movable shroud. A fluid coupling is operatively connected between the hydraulic pump and the output shaft of an engine for controlling a maximum number of rpm of the hydraulic pump to thereby keep an amount of oil discharged from the hydraulic pump below a certain level when the engine rotates at a high speed.
REFERENCES:
patent: 2913065 (1959-11-01), Lyon, Jr.
patent: 3398882 (1968-08-01), Zenkner
patent: 4065052 (1977-12-01), Ridenour
patent: 4366783 (1983-01-01), Clemente
patent: 4376424 (1983-03-01), Mazur
patent: 4438732 (1984-03-01), Seifert
patent: 4489680 (1984-12-01), Spokas et al.
Kawabata Yasuhiro
Tsuchikawa Shunzo
Aisin Seiki Kabushiki Kaisha
Cuchlinski Jr. William A.
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