| 摘要 |
PURPOSE:To enhance recovery efficiency of energy, by connecting a driving shaft with a flywheel after speed change ratio of a variable speed transmission means, which transmits power between the driving shaft and the flywheel, is adjusted to a value corresponding to the speed ratio of the flywheel to the vehicle driving shaft. CONSTITUTION:When a vehicle is decelerated and accelerated, speed change ratio of a flywheel speed to a driving shaft speed in a variable speed transmission means 18 is adjusted to the speed change ratio PI=NF/NE corresponding to the ratio NF/NE of the speed NF of a flywheel 7 to the speed NE of a driving shaft 5 at a point of that time. Further the vehicle, after adjusting the variable speed transmission means 18 to the speed change ratio PI being a target, connects a clutch means 19. Consequently, the vehicle can suppress a torque shock due to a speed difference, provided between the flywheel and the driving shaft when they are connected, while enhance recovery efficiency of energy of deceleration.
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