| 摘要 |
A torque decision method of a hybrid vehicle for improving fuel efficiency is provided to execute load leveling exactly by calculating efficiency in performing load leveling, in consideration of efficiency of a path where energy is stored in a battery and used again. A torque decision method of a hybrid vehicle having an engine and a motor for improving fuel efficiency comprises the steps of: calculating torque that a driver demands, from the present vehicle speed and an accelerator pedal value detected and input from a vehicle speed sensor and a pedal sensor in a controller of the vehicle; calculating output efficiency if load leveling is not executed, while outputting engine torque according to the demand torque without charging a battery and output efficiency if load leveling for using the rest engine torque except for the demanded torque, for charging the battery by the motor is executed; and comparing two efficiency values and determining engine torque as a torque value set as an optimal driving point and motor torque as a difference value between engine torque of an optimal driving point and the demanded torque of the driver, if output efficiency in case that load leveling is not executed is lower than output efficiency in case that load leveling is executed.
|
