Patent ID: 8206261

Claim:
Method for power transmission between a shaft of a heat engine and a shaft of wheels of a hybrid vehicle, in which a power transmission device is used that has an electrical machine connected both to the heat engine through a clutch and to a shaft of wheels, and a starting system that is mechanically independent of the electrical machine and connected to the heat engine, in which: the heat engine is started by transmitting a breakaway torque to the shaft of this engine, the breakaway torque is transmitted by applying a torque to the engine shaft using the starting system and the clutch simultaneously, the torque applied by the clutch is offset by a compensation torque applied by the electrical machine to the wheel shaft, so as to reduce the loss of torque to the wheels, and having started the heat engine and powered on the electrical machine, a rotation speed of the heat engine is increased until the speed transmitted to a first plate of the clutch by this heat engine is higher than that transmitted by the electrical machine to a second plate of the clutch.