Controlled capacity torque converter clutch control during vehic

Details Controlled capacity torque converter clutch control during vehic Controlled capacity torque converter clutch control during vehic

1994-09-02

1996-07-16

Lorence, Richard M.

192 clutches and power-stop control

Vortex-flow drive and clutch

Including drive-lockup clutch

192 331, 477169, 477176, F16H 6114

Patent

active

055358632

ABSTRACT:
A torque converter clutch control having a controlled capacity mode of operation wherein clutch slip is controlled to a reference slip during periods of positive engine torque provides for a coast mode of operation wherein the clutch slip is controlled to a reference slip during periods of negative torque conditions. The control allows the drivetrain of the vehicle to couple torque to the engine thereby reducing fueling requirements and posturing the system for more efficient transitions into the controlled capacity mode. Drivetrain disturbances are not transferred to the vehicle by virtue of the controlled slip.

REFERENCES:
patent: 4468988 (1984-09-01), Hiramatsu
patent: 4582185 (1986-04-01), Grimes et al.
patent: 4700819 (1987-10-01), Nishikawa et al.
patent: 4940122 (1990-07-01), Fujieda
patent: 5086889 (1992-02-01), Nobumoto et al.
patent: 5186294 (1993-02-01), Nitz et al.
patent: 5202833 (1993-04-01), Fodale
patent: 5325946 (1994-07-01), Kashiwabara et al.

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