| 摘要 |
PROBLEM TO BE SOLVED: To stop a prime mover without fluctuation in a torque to be output to a drive shaft. SOLUTION: A clutch motor 30 and assisting motor 40 are provided for a power transmission device coupled to a crank shaft 56 of an engine 50 and are controlled by a controller 80. When a stop signal for engine 50 is detected, the controller 80 sequentially lower the torque command value of the clutch motor 30 and the target torque of the engine 50 until the engine 50 comes to an idling state. The assisting motor 40 is controlled in such a manner that a decrease in torque to a drive shaft 22 due to decreased torque command value of the clutch motor 30 is compensated by using the power of a battery 94. When the engine 50 comes to an idling state, fuel supply is stopped and its operation is stopped, and the drive shaft 22 is driven only by a torque of the assisting motor 40 by the power of the battery 94. By such control, the engine 50 can be stopped without fluctuation in the torque output to the drive shaft 22. |
