Regulatable fan drive

Details Regulatable fan drive Regulatable fan drive

1986-03-06

1987-12-01

Cuchlinski, Jr., William A.

Internal-combustion engines

Cooling

Automatic coolant flow control

123 4149, 13762547, F01P 504

Patent

active

047096667

ABSTRACT:
A regulatable drive for speed control of the cooling fan of an internal combustion engine comprises fluid feed from a tank to the suction side of a pump via a suction passage wherein flow is controlled by a regulatable multi-position valve. The pump provides pressure feed to the suction side of a fluid motor that operates the fan. A bypass passage connects the suction passage of the fluid pump through the regulatable valve to the suction side of the fluid motor. The regulatable valve is actuated for control of suction feed to the pump responsive to fan speed via control circuitry which may also be responsive to engine temperature.

REFERENCES:
patent: 4377989 (1983-03-01), Tholen et al.
patent: 4446697 (1984-05-01), Goscenski, Jr.
patent: 4479532 (1984-10-01), Watanabe
patent: 4487255 (1984-12-01), Bianchetta et al.

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