Damper clutch control method for automatic transmission
First Claim
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1. A damper clutch control method comprising the steps of:
- detecting a throttle opening, an engine rpm and a turbine rpm;
performing lift-foot-up shifting if throttle opening is abruptly decreased;
determining if a difference in engine rpm and turbine rpm is below a predetermined value; and
controlling a duty of a damper clutch if the difference in engine rpm and turbine rpm is below the predetermined value such that the engine rpm is maintained to be larger than or equal to the turbine rpm.
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Abstract
A damper clutch control method comprising the steps of detecting a throttle opening, an engine rpm and an turbine rpm; performing lift-foot-up shifting if throttle opening is abruptly decreased; determining if a difference in engine rpm and turbine rpm is below a predetermined value; and duty controlling a damper clutch if the difference in engine rpm and turbine rpm is below the predetermined value.
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Citations
3 Claims
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1. A damper clutch control method comprising the steps of:
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detecting a throttle opening, an engine rpm and a turbine rpm;
performing lift-foot-up shifting if throttle opening is abruptly decreased;
determining if a difference in engine rpm and turbine rpm is below a predetermined value; and
controlling a duty of a damper clutch if the difference in engine rpm and turbine rpm is below the predetermined value such that the engine rpm is maintained to be larger than or equal to the turbine rpm. - View Dependent Claims (2, 3)
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Specification