| 摘要 |
A speed-change mode is changed from a stepless speed-change mode to a fixed speed-change mode while limiting or controlling the torque variation of an output member. An ECU 100 performs speed-change control. In the speed-change control, if a request is provided to change the speed-change mode from the stepless speed-change mode to the fixed speed-change mode, the ECU 100 engages the clutch mechanism 350 after the rotational synchronization and the phase synchronization of the clutch mechanism 350. After engaging the clutch mechanism 350, the ECU 100 gradually reduces the output torque of a motor generator MG1 and gradually changes a reaction element from a sun gear 331 to a sun gear 341. At this time, the output torque of a motor generator MG2 is also gradually reduced. The output torque of the motor generator MG2 is corrected to limit or control a change in the output torque of a drive shaft 320, on the basis of the gear ratio between the rotational elements of a power dividing mechanism 300 and the reduction amount of the output torque of the motor generator MG1.
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