192 clutches and power-stop control – Clutches – Fluent material
Patent
1987-11-10
1989-07-11
Bonck, Rodney H.
192 clutches and power-stop control
Clutches
Fluent material
192 82T, 192103R, F16D 3500, F16D 4325
Patent
active
048463256
ABSTRACT:
A viscous fan clutch (10) is typically employed in a fan drive mechanism within a truck or automobile. A shaft (18), driven by the engine (12), rotates a clutch member (42) within the fan drive. The clutch member is arranged for fluid engagement with a body member (60) for the transmission of torque thereto when fluid is disposed in an operating chamber (106) defined by complimentary shear surfaces in the clutch and body members (48 and 98), respectively. A tether assembly (30) operates as an actuator to displace a valving element (196) within the clutch to control the torque transmission there through and thus the speed of the output shaft and fan (34) thereof. Fan speed is regulated by variable current signal applied to a coil (174) within assembly (30) to selectively variably frictionally engage valve element assembly (196) with a grounded thrust surface or reaction member (190) to effect limited displacement of a valve element (198) in response thereto.
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Bonck Rodney H.
Eaton Corporation
Lewis J. G.
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