| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a driving device for a vehicle for satisfactorily cranking an internal combustion engine by using a motor installed as a prime mover while suppressing the output torque of the motor. <P>SOLUTION: A driving device 10 has a first speed change mechanism 30 receiving the mechanical power from an engine output shaft 8 by a first input shaft 27, a second speed change mechanism 40 receiving the mechanical power from the engine output shaft 8 and a motor 50 by the second input shaft 28, and a first clutch 21 which can connect the engine output shaft 8 and the first input shaft 27. When cranking an internal combustion engine 5, an ECU 100 selects the shifting step of the first speed change mechanism 30 and the second speed change mechanism 40 such that a mechanical power received by the second input shaft 28 is transmitted to the first input shaft 27 while being decelerated, and brings the first clutch 21 into connection state. A mechanical power from the motor 50 is decelerated by the second speed change mechanism 40 and the first speed change mechanism 30 in order to increase the torque, and then transmitted to the engine output shaft 8 through the first clutch 21. <P>COPYRIGHT: (C)2009,JPO&INPIT |
