Method and apparatus for controlling a torque converter clutch

Details Method and apparatus for controlling a torque converter clutch Method and apparatus for controlling a torque converter clutch

2011-08-02

2011-08-02

Le, David D (Department: 3655)

Interrelated power delivery controls, including engine control

Clutch control

Condition responsive control

C477S064000, C477S180000

Reexamination Certificate

active

07988597

ABSTRACT:
A method and apparatus are provided for controlling actuation of a clutch device for a torque converter operative to transmit torque between an engine and a transmission. The method comprises controlling actuation of the clutch device effective to maintain an engine speed within a predetermined speed range when a transmission input speed is less than a threshold; and, controlling actuation of the clutch device effective to maintain slippage across the torque converter substantially at a predetermined slippage level when the transmission input speed is greater than the threshold.

REFERENCES:
patent: 5484354 (1996-01-01), Vukovich et al.
patent: 5531302 (1996-07-01), Koenig et al.
patent: 2007/0287594 (2007-12-01), DeGeorge et al.

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