| 摘要 |
<P>PROBLEM TO BE SOLVED: To achieve improvement in both driving performance of a vehicle and durability of a friction clutch while securing compensation for driving force in a transition period of variable speed. <P>SOLUTION: A driving system includes a second motor generator 5 and a transmission 6. The transmission 6 has the friction clutch 7 engaged in a high mode, and a dog clutch 8 engaged in a low mode, as transmission elements. In the transition period of shifting from the high mode to the low mode, a transmission input rotating speed is increased with the second motor generator 5 as rotating speed control to engage the dog clutch 8 at the timing when the clutch input rotating speed is synchronous with the clutch output rotating speed. A motor variable speed control means corrects the amount of compensation for driving force to the decrease side upon determining that the amount of compensation for driving force by slip engagement becomes a brake to the increase operation of the transmission input rotating speed by the second motor generator 5 when frictional force generated by placing the friction clutch 7 in the slip engaged state in the transition period of variable speed is used as compensation for driving force. <P>COPYRIGHT: (C)2010,JPO&INPIT |
