Thermosensitive hydraulic fan coupling

Details Thermosensitive hydraulic fan coupling Thermosensitive hydraulic fan coupling

1989-06-21

1990-06-05

Kamen, Noah P.

Internal-combustion engines

Cooling

Automatic coolant flow control

192 82T, F01P 702

Patent

active

049304585

ABSTRACT:
A thermosensitive hydraulic fan coupler for an automobile engine, which allows a suitable amount of air to be supplied to the engine in accordance with the travelling condition of the automobile through the rotation of a fan is provided. The fan coupling according to the present invention is provided with an idle oil chamber and a specific dam within the former adjacent the oil circulation passage between the oil chamber and the torque transmission chamber with the dam serving as an opening and closing mechanism so that in addition to the effects of preventing the generation of abnormal fan noises and promoting an warming-up operation of the engine, it can more effectively prevent the phenomenon of "attendant rotation" of the driven side of the coupling immediately after restarting the engine.

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