The present invention broadly comprises a method for controlling engine speed, engine torque, and torque converter output including the steps of applying engine torque to a torque converter and modulating the transferring of the torque to a pump for the torque converter. Stroke is varied by changing relative position of pairs of eccentric inner and outer cams that drive the pump’s plungers. The operation member swings by pivoting the switch so as to control the either of the two engaging members to be engaged with the ratchet driving member. The segment magnetic-path portion works to magnetically couple therethrough between the at least one second pair of the plurality of stator poles so as to form a second magnetic flux in loop thereamong.