| 摘要 |
PROBLEM TO BE SOLVED: To prevent the degradation of exhaust gas that is caused by a torque- down control when speed is changed in a hybrid vehicle. SOLUTION: When torque-down demands occur on the change of speed (S4), a motor torque-down amount by a motor generator of demanded torque-down amounts is set to a highest possible value, while engine torque-down amount by an engine is lessened to a lowest possible value. The motor torque-down amount is set by a state of charge(SOC) of an electricity-storing device. When SOC<=SOC1, the amount is set to a maximum value, irrespective of the SOC. When SOC1<SOC<=SOC2, it is set in accordance with the SOC. When SOC 2<SOC, it is set to zero. In this way, the motor torque-down amount is set to as large a value as possible, according to the state of charge(SOC). |
