Slip control system of lockup clutch

Details Slip control system of lockup clutch Slip control system of lockup clutch

1996-07-12

1998-04-28

Bonck, Rodney H.

192 clutches and power-stop control

Vortex-flow drive and clutch

Including drive-lockup clutch

477 65, 477176, F16H 6114

Patent

active

057433640

ABSTRACT:
The slip control system of a lockup clutch including a lockup relay valve and a duty solenoid (50). The lockup relay valve switches the engagement state of the lockup clutch in response to the actuation of a switching solenoid. In the state in which the lockup relay valve is switched to a position for exhausting working oil out of a release side oil chamber in a torque converter, the duty solenoid receives a duty factor correspondent to the desired value of a slip magnitude as delivered from a controller (58) and then controls the quantity of exhaust of the working oil. Thus, the slip control system can attain a reduced cost and a smaller size as well as a lighter weight while being enhanced in reliability and controllability.

REFERENCES:
patent: 5010991 (1991-04-01), Tsukamoto et al.
patent: 5058716 (1991-10-01), Lippe et al.
patent: 5584370 (1996-12-01), Wakahara
patent: 5611750 (1997-03-01), Kono et al.

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