Control hydraulic circuit for speed change clutch

Details Control hydraulic circuit for speed change clutch Control hydraulic circuit for speed change clutch

1989-03-31

1990-06-26

Bonck, Rodney H.

192 clutches and power-stop control

Transmission control and clutch control

Common control

192 8713, 192 8719, B60K 4122, F16D 2511

Patent

active

049364308

ABSTRACT:
A working oil is supplied to a first set of clutch through a first control valve when the first control valve is functioning. The working oil is supplied to a second set of clutch through a second control valve, a third control valve and a fourth control valve when the second control valve is functioning and third and fourth control valves are not functioning. The working oil is supplied to a third set of clutch through the second control valve, the fourth control valve and the third control valve when the second and third control valves are functioning and the fourth control valve is not functioning. The working oil is supplied to a fourth set of clutch through the second control valve and the fourth control valve when the second and fourth control valves are functioning.

REFERENCES:
patent: 4262554 (1981-04-01), Ahlen et al.
patent: 4729408 (1988-03-01), Coutant
patent: 4817770 (1989-04-01), Coutant

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