Slip control system for torque converter of automatic transmissi

Details Slip control system for torque converter of automatic transmissi Slip control system for torque converter of automatic transmissi

1991-09-09

1992-04-21

Braun, Leslie A.

192 clutches and power-stop control

Vortex-flow drive and clutch

With brake

192 0076, B60K 4128

Patent

active

051059266

ABSTRACT:
A slip control system for a torque converter of an automatic transmission includes lock-up clutch device provided in a torque converter for connecting an input and output members of the torque converter directly. A torque detecting device detects a transmitted torque introduced into the output member of the torque converter, a speed difference setting device sets a target value of a rotation speed difference between the input and output members, a pressure difference control device controls a pressure difference between a releasing chamber and an engaging chamber of the lock-up clutch device, based on a predetermined relationship between the input torque and the speed difference so as to accomplish the target value of the speed difference, and a speed difference detecting device detects an actual speed difference between the input and output members. In a preferred embodiment of the invention, a compensatng device compensates the target value of the speed difference set by the speed difference setting device based on a deviation between the actual and target speed difference. A responsive slip control, therefore, can be accomplished.

REFERENCES:
patent: 4577737 (1986-03-01), Niikura et al.
patent: 4580671 (1986-04-01), Matsuoka et al.
patent: 4618041 (1986-10-01), Sotoyama et al.
patent: 4640396 (1987-02-01), Nishimura
patent: 4660697 (1987-04-01), Yoneda et al.
patent: 4669441 (1987-06-01), Okimoto
patent: 4687083 (1987-08-01), Sotoyama et al.
patent: 4698988 (1987-10-01), Swisher
patent: 4720003 (1988-01-01), Murasugi
patent: 4821190 (1989-04-01), Patil

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