| 摘要 |
A method for controlling an electro-mechanical transmission (10) through an unlocking state of a clutch (70,62,73,75), the transmission mechanically-operatively coupled to an internal combustion engine (14) and an electric machine (56,72) adapted to selectively transmit mechanical power to an output member (64) includes decreasing a reactive torque acting upon the clutch (70,62,73,75), including overriding torque commands to the engine (14) and to the electric machine (56,72), and simultaneously decreasing a clutch torque capacity, including, during a lead period selected according to an engine command reaction time, commanding an intermediate clutch torque command maintaining sufficient clutch torque capacity to exceed an initial reactive torque calculated at an initiation of the unlocking state, and following the lead period, decreasing through a ramp down the clutch torque capacity, maintaining sufficient clutch torque capacity to exceed the decreasing reactive torque.
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