Slip control system for automatic transmission with lock-up clut

Details Slip control system for automatic transmission with lock-up clut Slip control system for automatic transmission with lock-up clut

1990-07-19

1992-02-11

Lorence, Richard

192 clutches and power-stop control

Vortex-flow drive and clutch

With brake

192 0096, 192 33, F16H 4502, B60K 4102

Patent

active

050868896

ABSTRACT:
A slip control system for a lock-up clutch of an automatic trnasmission includes a torque converter having an input member, connected to an engine output shaft so that engine output torque is transmitted, and an output member, driven by virtue of a rotation of the input member through a hydraulic fliud. A slip control device controls an engaging force of the lock-up clutch to carry out a slip control so that an amount of slippage in the lock-up clutch is controlled to a target value, corresponding to a target speed difference between the input and output members. An acceleration detecting device detects an accelerating condition of a vehicle, and an engine load detecting device detects an engine load. A slip control changing device suppresses a responsiveness in controlling the slippage in accordance with change in the engine load at the end of the accelerating condition of the vehicle.

REFERENCES:
patent: 4468988 (1984-09-01), Hiramatsu
patent: 4720003 (1988-01-01), Murasugi
patent: 4724939 (1988-02-01), Lockhart et al.
patent: 4732245 (1988-03-01), Hiramatsu
patent: 4940122 (1990-07-01), Fujieda
patent: 4953677 (1990-09-01), Aoki et al.
patent: 4957194 (1990-09-01), Sawa et al.

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