| 摘要 |
PROBLEM TO BE SOLVED: To suppress a shock resulting from the backlash of a gear of a power transmission system, in a hybrid vehicle in which an MG (motor) is connected to the power transmission system of an engine.SOLUTION: When a vehicle drive requirement is generated during a fuel stop of an engine 11 at the deceleration of a vehicle, an MG 12 generates torque at a backlash torque command value after performing inverse filter processing for attenuating a resonant component of a drive shaft 15. The generation of the resonance of a drive shaft 15 generated by the backlash torque of the MG 12 is thereby suppressed while suppressing the generation of a shock caused by the gear tooth hammering of a power transmission system, and the generation of a shock caused by the resonance of the drive shaft 15 is suppressed. Furthermore, after changing the torque of the drive shaft 15 to a positive value from a negative value by the backlash torque of the MG 12, the combustion of the engine 11 is permitted. By this constitution, it is avoided that gears are strongly tooth-hammered by a synergy effect of the initial explosion torque of the engine 11 and the backlash of the gear, and the generation of the large shock is prevented. |
