Patent ID: 8781662

Claim:
A torque control method for a hybrid vehicle including an engine and at least two motor/generators as driving sources and a battery for supplying electric power to the motor/generators, the torque control method comprising: inputting, by a control unit, an optimal torque at a driving point of the engine, a maximum torque at a steady state of the engine, optimal torques at a driving point of the two motor/generators and maximum torques at a steady state of the two motor/generators; calculating, by the control unit, a reduction torque ratio for each of the engine and the two motor/generators; determining, by the control unit, a reduction factor based on the reduction torque ratios of the engine and the motor/generators; calculating, by the control unit, each target torque of a plurality of target torques based on the reduction factor and the optimal torques of the engine and the two motor/generators; and controlling, by the control unit, each torque of the engine and two motor/generators according to the each target torque.