Viscous fluid coupling apparatus

Details Viscous fluid coupling apparatus Viscous fluid coupling apparatus

1990-10-05

1992-03-31

Kamen, Noah P.

Internal-combustion engines

Cooling

Automatic coolant flow control

192 58B, 192 82T, F01P 702

Patent

active

050998030

ABSTRACT:
A viscous fluid coupling apparatus includes a shaft, a rotor, and a housing. The housing has a separator plate and a partition wall. The separator plate divides an inside of the housing into a reservoir chamber and an actuator chamber having a torque transmitter portion, and it has a communication hole communicating the reservoir chamber with the actuator chamber and a pump protrusion for transferring the viscous fluid in the reservoir chamber to the actuator chamber via the communication hole. The partition wall divides the reservoir chamber into an inner peripheral reservoir chamber communicated to the actuator chamber and an outer peripheral reservoir chamber communicated to the actuator chamber. Viscous fluid is pumped from the actuator chamber to the inner peripheral chamber by the pump hole, the pump protrusion and the communication hole, and less of the viscous fluid remains less in the actuator chamber when an engine is stopped. Therefore, less induced rotation occurs.

REFERENCES:
patent: 4271946 (1981-06-01), Bridge
patent: 4405039 (1983-09-01), Hauser
patent: 4564043 (1986-01-01), Storz
patent: 4924985 (1990-05-01), Kennedy
patent: 4967889 (1990-11-01), Ihlemann

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