| 摘要 |
<P>PROBLEM TO BE SOLVED: To reduce maximum load capacity of an assist motor, and also reduce maximum current value of an inverter circuit for driving the assist motor. <P>SOLUTION: A control unit 90 sets a WOT line L2 as a boundary of an overdrive area and an underdrive area, when a coupling condition of an assist motor 40 is an overdrive linking condition (S104). The control unit 90 determines a desired coupling point of a drive shaft, namely an outer rotor shaft 35 from a required output (S106). When the desired operating point is in the underdrive area, the unit selects the WOT line L2 for maximizing a torque of an engine 50 as an operating line of the engine 50 (S116), and marks a switch flag from the overdrive coupling to the underdrive coupling (S118). Thereby, the overdrive coupling is switched to the underdrive coupling, and when the operating point of the drive shaft, namely the outer rotor shaft 35 is in the underdrive area, the WOT line L2 is used as the operating line of the engine 50. <P>COPYRIGHT: (C)2003,JPO |
