Control apparatus for a rotary body for cooling an engine

Details Control apparatus for a rotary body for cooling an engine Control apparatus for a rotary body for cooling an engine

1992-05-18

1993-07-06

Kamen, Noah P.

Internal-combustion engines

Cooling

Automatic coolant flow control

123 4149, F01P 702

Patent

active

052244466

ABSTRACT:
A speed control system for an engine cooling fan has a planetary gearset, variably establishing a ratio between input and output speeds, and a hydraulic controller for changing the speed ratio according to engine operating conditions. Either one of a sun gear and pinion gear constitutes an input gear connected to an engine output of the engine. The other one of the sun gear and pinion gear is operationally coupled to a hydraulic control and a ring gear constitutes an output gear driving a rotary body. The hydraulic controller applies and varies an operational resistance to the planetary gearset according to engine operating conditions so as to cause it to vary the ratio of input and output speeds.

REFERENCES:
patent: 4214652 (1980-07-01), Quenneville

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