The utility model discloses a torque converter of power structure is got in area, pump impeller in including the torque converter casing and locating the torque converter casing, the turbine, the guide pulley, power taking gear, main drive gear, the wheel stand, the output shaft, the wheel stand circle, the cover wheel, the oil pump driving gear returns, the dump pump, the flywheel, the shaft coupling, flexible disk mount pad and flexible disk, flexible disk links to each other with the flywheel, flexible disk passes through the flexible disk mount pad and links to each other with the cover wheel again, the cover wheel is connected with the pump impeller again, main drive gear locates on the rear end of pump impeller, and respectively with power taking gear, it meshes mutually to return the oil pump driving gear, the pump impeller is located on the wheel stand, the one end of wheel stand links to each other with the wheel stand circle, the guide pulley is located the wheel stand and iscircled, the output shaft is worn to locate in the wheel stand, the one end of output shaft links to each other with the turbine, the other end links to each other with the shaft coupling. The utility model provides a supply chain that exists among the research and development of new brand cigarettes imperfect, reliability subalternation problem again through integration and optimization, reducestransmission system's behind the engine total weight.