HYBRID-POWER DRIVING SYSTEM AND METHOD THEREFOR

A transmission control system (120) for a hybrid-power driving system includes at least 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, power loss associated with a gear shift for one of these power sources (30, 50) can be directly offset by using the other power source (50, 30).