| 摘要 |
PROBLEM TO BE SOLVED: To apply no braking force to driven wheels as a whole by providing a drive source applying the torque accelerating a driven wheel on the outer wheel side more than a driven wheel on the inner wheel side on a differential rotation generating means. SOLUTION: A differential rotation generating means 5 is provided between right and left driven rear wheels 4R, 4L. The differential rotation generating means 5 is provided with an electric motor 6 serving as a drive source, its stator 6a is connected to one of the right and left rear wheels 4R, 4L, e.g. left rear wheel 4L, and its rotor 6b is connected to the right rear wheel 4R. The electric motor 6 is controlled by wheel speed sensors 7R, 7L detecting the revolving speeds of the right and left rear wheels 4R, 4L and a controller 9 receiving the signal from a steering angle sensor 8. When the turning direction is left in this control, the electric motor 6 is driven in the forward direction. When the turning direction is right, the electric motor 6 is driven in the reverse direction. The rear wheel on the outer wheel side is accelerated more than the rear wheel on the inner wheel side, and the yaw moment assisting the turn of a vehicle can be applied.
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