Magnetically actuated viscous fluid coupling

Details Magnetically actuated viscous fluid coupling Magnetically actuated viscous fluid coupling

1980-07-25

1982-08-31

Bonck, Rodney H.

192 clutches and power-stop control

Clutches

Fluent material

192 82T, 192 84R, 251129, F16D 3500, F16D 4325

Patent

active

043467970

ABSTRACT:
A viscous fan clutch (10) is typically employed in a fan drive mechanism within a truck or automobile. A shaft (12) driven by the engine, rotates a clutch member (24) within the fan drive. The clutch member is arranged for fluid engagement with a body member (42) for the transmission of torque thereto when the fluid is disposed in an operating chamber (70) defined by complimentary shear surfaces (30 and 56) in the clutch and body members. During relative rotation between the two members, fluid is pumped from the operating chamber to a storage chamber (76). Fluid is returned to the operating chamber via bleed ports (94) which are selectively restricted by an electromagnetically controlled valve (88). A control system (110) senses vehicle coolant temperature and actuates the valve as a function thereof.

REFERENCES:
patent: Re30428 (1980-11-01), Detty
patent: 2521117 (1950-09-01), DuBois et al.
patent: 2912963 (1959-11-01), Dufresne
patent: 3055473 (1962-09-01), Oldberg et al.
patent: 3250355 (1966-05-01), Weir
patent: 3419122 (1968-12-01), Connelly
patent: 4056178 (1977-11-01), Detty
patent: 4074662 (1978-02-01), Estes
patent: 4119184 (1978-10-01), Mower et al.
patent: 4246995 (1981-01-01), Gee
patent: 4265348 (1981-05-01), Clarke
patent: 4270641 (1981-06-01), Nonnenmann et al.
patent: 4271945 (1981-06-01), Budinski

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