| 摘要 |
A method for regulating operation of a hybrid transmission selectively connectable to an engine includes deactivating an offgoing clutch to place the transmission in a first EVT mode. The transmission is then placed in an ETC mode and an oncoming clutch is actuated to place the transmission in a second EVT mode. An engine-on state is maintained during deactivation of the offgoing clutch and actuation of the oncoming clutch. Transitioning from the first to second EVT mode may be characterized by lack of a transition through a fixed-gear mode. The transmission may be configured to continuously produce output torque during the transition from the first to second EVT mode. The oncoming clutch may be synchronized to zero clutch slip prior to actuating the oncoming clutch. Engine speed may be varied while the offgoing clutch is disengaged and prior to actuating the oncoming clutch.
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