Hydraulic circuit for lock-up device

Details Hydraulic circuit for lock-up device Hydraulic circuit for lock-up device

1995-04-13

1996-05-21

Wright, Dirk

Interrelated power delivery controls, including engine control

Clutch control

With fluid drive

477158, B60K 4102

Patent

active

055184693

ABSTRACT:
A hydraulic circuit for a lock-up device includes a valve arranged in an oil path for supplying hydraulic pressure to a hydraulic power transmission. The valve regulates flows of hydraulic oil discharged toward a cooling circuit or a lubricating circuit, corresponding to a signal in relation to an engine torque. Therefore, corresponding to the engine torque, it is possible to maintain the hydraulic pressure for the hydraulic power transmission, which is necessary for lock-up condition of the lock-up device.

REFERENCES:
patent: 3817357 (1974-06-01), Mori et al.
patent: 4418587 (1983-12-01), Kauffman
patent: 4506564 (1985-03-01), Coutant
patent: 4552036 (1985-11-01), Takano et al.
patent: 4662493 (1987-05-01), Aoki et al.
patent: 4939957 (1990-07-01), Asano et al.
patent: 5323668 (1994-06-01), Nakagawa et al.

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