| 摘要 |
<P>PROBLEM TO BE SOLVED: To improve fuel consumption, emission, and drivability by selecting a suitable gear stage in a hybrid vehicle with a transmission. <P>SOLUTION: The priority of driving force adjustment control to a request of a vehicle driving force is set in the order of engine power increase, motor output increase, and gear ratio increase. To be more specific, a gear stage with the smallest gear ratio is selected in a range in which engine speed more than a predetermined minimum speed is achieved S12, S14, a requested driving force is attained with an engine power at the selected gear stage S16, the requested driving force is attained with the engine output and the motor output when the requested driving force cannot be attained only with the engine power S18, and gear stage is changed such that the gear ratio increases when the requested driving force cannot be attained with the engine power and the motor output S20. <P>COPYRIGHT: (C)2007,JPO&INPIT |
