| abstract |
(57) [Problem] To reduce the maximum load capacity of an assist motor and also reduce the maximum current value of an inverter circuit for driving the assist motor. A control unit (90) includes an assist motor (40). If the connection state is overdrive connection state, the WOT line L2 is set as a boundary between the overdrive area and the underdrive area (S104). The control unit 90 determines the target operating point of the outer rotor shaft 35 as the drive shaft from the required output (S106). If the target operating point is in the underdrive region, the target operating point is set as the operating line of the engine 50, Is selected (S116), and a flag for switching from overdrive coupling to underdrive coupling is set (S118). As a result, the mode is switched from the overdrive connection to the underdrive connection, and when the operating point of the outer rotor shaft 35 as the drive shaft is in the underdrive region, the operation line of the engine 50 is set as WOT. The line L2 will be used. |