Patent ID: 7793750

Claim:
A differential limiting control apparatus for a four-wheel drive vehicle in which, while motive power from an engine is transmitted at all times to at least one pair of front wheels and rear wheels, the motive power is distributed among the front and rear wheels, the differential limiting control apparatus comprising: a right-left wheel differential limiting mechanism arranged between right and left driving wheels to which the motive power is transmitted at all times, for applying a differential limiting force between the right and left driving wheels; a front-rear wheel differential limiting mechanism arranged between the front and rear wheels, for applying a differential limiting force between the front and rear wheels; and front-rear wheel differential limiting control unit for correcting an actual speed difference between the front and rear wheels so as to decrease in accordance with a rotational speed difference between the right and left driving wheels, and controlling the differential limiting force applied by the front-rear wheel differential limiting mechanism in accordance with a control amount obtained by using the corrected rotational speed difference between the front and rear wheels.