Rotary magnetic control for a viscous fluid coupling

Details Rotary magnetic control for a viscous fluid coupling Rotary magnetic control for a viscous fluid coupling

1981-12-03

1984-07-10

Bonck, Rodney H.

192 clutches and power-stop control

Clutches

Fluent material

192 82T, 251141, F16D 2702, F16D 3500

Patent

active

044587988

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 & 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) through a return passage (111). Fluid is returned to the operating chamber via bleed ports (118). The return passage and bleed ports are selectively restricted by an electromagnetically controlled valve (112) which taps the kinetic energy of the rotating members. A control system (132) senses vehicle coolant temperature and actuates the valve as a function thereof.

REFERENCES:
patent: 4346797 (1982-08-01), Bopp
patent: 4362226 (1982-12-01), Gee

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