| 摘要 |
A power transmission device for a front and rear wheel drive vehicle including: an electric type differential portion having a differential state between a rotation speed of a differential input member and a rotation speed of a differential output member controlled by controlling an operational sate of a first rotating machine coupled to a rotating element of a differential mechanism in a power transmittable manner; a second rotating machine disposed for at least one of front and rear wheels in a power transmittable manner; and a front and rear wheel power distribution device having three rotating elements that are an input rotating element, a first output rotating element operatively coupled to a first wheel that is one of the front and rear wheels, and a second output rotating element operatively coupled to a second wheel that is the other of the front and rear wheels, the front and rear wheel power distribution device distributing power to the first output rotating element and the second output rotating element, the power being input from the differential output member to the input rotation element, the front and rear wheel power distribution device being configured such that the input rotating element, the first output rotating element, and the second output rotating element are arranged in series from one end to the other end on a collinear diagram capable of representing rotation speeds of the three rotating elements on a straight line, a gear ratio from the first output rotating element to the first wheel being different from a gear ratio from the second output rotating element to the second wheel.
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