Lockup control apparatus and method for vehicular torque...

Interrelated power delivery controls – including engine control – Clutch control – Condition responsive control

Reexamination Certificate

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Details

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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patent: 5947865 (1999-09-01), Watanabe et al.
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patent: 6663533 (2003-12-01), Toyoda et al.
patent: 2002/0175036 (2002-11-01), Takatori et al.
patent: 10-141492 (1998-05-01), None
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patent: 11-159608 (1999-06-01), None
patent: 11-182672 (1999-07-01), None

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