Lockup clutch control system

Details Lockup clutch control system Lockup clutch control system

1986-07-30

1988-03-15

Bonck, Rodney H.

192 clutches and power-stop control

Vortex-flow drive and clutch

Including drive-lockup clutch

192 328, 192103C, F16H 4502

Patent

active

047307099

ABSTRACT:
A lockup clutch in a torque converter is connected by a lockup solenoid energized in response to a lockup signal generated by a lockup discrimination circuit. When a speed sensor detects a rate of deceleration higher than a predetermined level at the time the vehicle is abruptly braked, for example, a lockup control circuit overrides the lockup discrimination circuit to cut off the lockup signal for thereby de-energizing the lockup solenoid, whereupon the lockup clutch is disconnected.

REFERENCES:
patent: 4257503 (1981-03-01), Lutnick
patent: 4363973 (1982-12-01), Kawata et al.
patent: 4386521 (1983-06-01), Hamada et al.
patent: 4393467 (1983-07-01), Miki et al.
patent: 4431095 (1984-02-01), Suga
patent: 4463842 (1984-08-01), Redzinski
patent: 4471438 (1984-09-01), Futagi et al.
patent: 4499542 (1985-02-01), Hamajima et al.
patent: 4499979 (1985-02-01), Suzuki et al.
patent: 4503956 (1985-03-01), Suzuki et al.

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