| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a control device of a driving device for a vehicle, controlling the gear ratio of a continuously variable speed transmission part and the gear ratio of a stepped shifting part to obtain favorable fuel consumption. <P>SOLUTION: In a continuously variable speed running state in which a differential part (a continuously variable transmission part) 11 is steplessly shifted, the gear ratio γ of a stepped shifting part 20 and the gear ratio γ of the differential part (the continuously variable transmission part) 11 are controlled by a gear ratio control means 86 (S5, S6) to obtain the optimum fuel consumption, whereby as compared with the case of individually controlling the gear ratios, the optimum fuel economy of the vehicle can be obtained. For example, in the comparatively high-speed steady running, the gear ratio γ of the stepped shifting part 20 is controlled not to cause reversion of a first electric motor M1 in the differential part 11, whereby the optimum fuel economy as the whole vehicle can be obtained. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
