Interrelated power delivery controls – including engine control – Clutch control – Condition responsive control
Reexamination Certificate
2007-06-26
2007-06-26
Marmor, Charles A (Department: 3681)
Interrelated power delivery controls, including engine control
Clutch control
Condition responsive control
C477S180000
Reexamination Certificate
active
11004865
ABSTRACT:
In a lockup control apparatus and method for a vehicular torque converter, the torque converter is controlled to be under a steady-state lockup state by a lockup clutch during a steady-state traveling state, and the torque converter is controlled to be under a coast lockup state during a coasting state where an accelerator opening angle is completely closed, and a lockup state is released when an engine speed becomes equal to or lower than a predetermined lockup release rotational speed. Moreover, an actual lockup release time between a time point when a lockup release command for releasing the lockup state is outputted and a time point when the lockup clutch becomes completely released is calculated, and the lockup release rotational speed is set on the basis of the calculated actual lockup release time.
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Foley & Lardner LLP
Holmes Justin K.
Marmor Charles A
Nissan Motor Co,. Ltd.
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