Lock-up clutch pressure control device

Details Lock-up clutch pressure control device Lock-up clutch pressure control device

1992-06-17

1993-06-15

Bonck, Rodney H.

192 clutches and power-stop control

Vortex-flow drive and clutch

With brake

192 33, B60K 4102, F16H 4502

Patent

active

052190552

ABSTRACT:
A spool of a lock-up control valve has a first effective area exposed to a release pressure which is supplied to a release chamber of the lock-up clutch and a second larger effective area which is exposed to the apply pressure which is supplied to an apply chamber. When acceleration is demanded when the lock-up clutch is in one of slip or fully lock-up modes and a sudden demand for acceleration is made, the pressure differential between the apply and release pressures is reduced below the normal level for a predetermined period of time.

REFERENCES:
patent: 3977502 (1976-08-01), Chana
patent: 4706790 (1987-11-01), Lockhart et al.
patent: 5082095 (1992-01-01), Imamura

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