Patent ID: 7694763

Claim:
A vehicle comprising: a mechanical power source capable of outputting a mechanical power to a power shaft; an electric motor which has a rotor connected to said power shaft, and causes said rotor to rotate with a rotating magnetic field of a stator to input and output the mechanical power to and from said power shaft; a accumulator capable of sending and receiving an electric power to and from at least said electric motor; a transmission capable of transmitting the mechanical power accompanying a change of gears between said power shaft and an axle side, and releasing the connection between said power shaft and said axle side; and a control module of controlling said electric motor such that when a shift lever is in a parking position, a magnetic field direction of said stator is fixed based on a drive state of said mechanical power source to limit the rotation of said rotor, wherein said mechanical power source includes an internal combustion engine and an electric power-mechanical power input output structure which is connected to an output shaft of said internal combustion engine and said power shaft, can send and receive an electric power to and from said accumulator, and outputs at least a part of a mechanical power from said internal combustion engine accompanying an input and output of the electric power and the mechanical power to said power shaft, wherein said control module performs control so as to limit the rotation of said rotor by fixing a magnetic field direction of said stator based on at least one of a drive state of said internal combustion engine and a drive state of said electric power-mechanical power input output structure, and wherein said control module uses said electric power-mechanical power input output structure to perform control so as to prevent said rotor from rotating by setting a first index as a rotation restriction index when said internal combustion engine is motoring to start or stop said internal combustion engine; by setting a second index other than the first index as said rotation restriction index when the internal combustion engine is operating; and by fixing the magnetic field direction of said stator based on the set rotation restriction index.