192 clutches and power-stop control – Clutches – Fluent material
Patent
1995-12-26
1997-03-18
Bonck, Rodney H.
192 clutches and power-stop control
Clutches
Fluent material
74574, 192 7012, 192 82T, 192 83, 192104F, 19211336, F16D 3500, F16D 43284, F16F 1526
Patent
active
056114168
ABSTRACT:
A speed limiting accessory drive and crankshaft damper for use with an engine in a vehicle. A speed limiting drive pulley (16) is affixed to a crankshaft (14) via a hub (42) and includes a pulley member (24) which drives the accessory belt (18). A damper mass (40) is elastically attached to the hub via damper springs (44). A Clutch assembly (36) is operatively located between the damper mass and pulley member, with a piston (54) or bellows biased against and engaging the clutch assembly. Oil located throughout the clutch assembly is acted on by centrifugal force when the drive pulley is rotating and acts to push against the biases of the piston. This allows the clutch to slip at high engine speeds, thus limiting the speed of the pulley member. A heat compensating mechanism acts to counter the pushing force of the oil if the temperature of the oil rises too high due to the clutch slippage, thereby reducing clutch slip.
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Berger Alvin H.
Diehl Roy E.
Verduce Anthony
Bonck Rodney H.
Ford Motor Company
Wilkinson Donald A.
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