Torque converter clutch with a torque reversal release valve ass

Details Torque converter clutch with a torque reversal release valve ass Torque converter clutch with a torque reversal release valve ass

1981-10-23

1984-01-24

Krizmanich, George H.

192 clutches and power-stop control

Vortex-flow drive and clutch

Including drive-lockup clutch

F16D 366

Patent

active

044270992

ABSTRACT:
A torque converter clutch is released from engagement when the direction of drive torque reverses from an engine drive condition to a vehicle coast condition. Upon torque reversal, a pair of staged or sequentially operated poppet type valves are opened to balance the fluid pressure in the apply and release chambers of the clutch to effectively cause clutch disengagement. The poppet type valves are opened to release the clutch by a cam surface disposed on the clutch vibration damper.

REFERENCES:
patent: 4167993 (1979-09-01), Vukovich et al.
patent: 4333552 (1982-06-01), La Marche

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