HYBRID-POWER DRIVING SYSTEM AND METHOD THEREFOR

A transmission control system for a hybrid-power driving system comprising a transmission (70) includes a gear shifting actuation module (132) to control engagement of specific gearwheels and a clutch actuation module (142) to control a clutch (40) that couples an engine (30) to the transmission (70). Gear shifts are required for each of the engine (30) and an electric motor (50) in the hybrid-power driving system. By selectively controlling the clutch (40) and engagement of specific gearwheels, the transmission control system can start the engine (30) when the vehicle is initially powered by the electric motor (50) alone. Starting the internal combustion engine (30) in this case switches the vehicle from a pure motor driving mode to a hybrid driving mode.