| 摘要 |
Because the engine rotational speed (NE) in a charging creep mode is higher than the MG rotational speed (NMG) in a MG creep mode, a predetermined target creep torque can be efficiently produced and fuel economy can be improved by operating a motor generator (MG) at a relatively low rotational speed in the MG creep mode. In the charging creep mode, a direct-injection engine (12) is operated at a relatively high rotational speed, whereby the predetermined target creep torque can be produced and a battery (44) can be charged while decrease in NV performance or charging efficiency, or engine stalling can be suppressed. During transition from the MG creep mode to the charging creep mode, the direct-injection engine (12) is started by ignition, and a K0 clutch (34) is connected after the engine rotational speed (NE) exceeds the MG rotational speed (NMG). Thus, compared to cranking-start, deterioration in the amount of remaining stored electricity (SOC) can be suppressed and the creep mode switching can be performed while variation in creep torque is suppressed. |
