To provide a traction control device for full-wheel-drive vehicle, which can appropriately control the operation of vehicle even in the case where full wheels are accelerated and slipped.
A judgment whether full wheels are accelerated and slipped or not is performed on the basis of the condition whether acceleration slip flag (accslip) F displays 1 or not (S300). In the case of YES, since the full wheels are accelerated and slipped, a full-wheel slip flag (allslip) F is set at 1 (S310). Estimated car-body speed VTO is set at the target wheel speed Vwo so as to control the condition that the full-wheel are accelerated and slipped (S320). On the other hand, in the case of NO, since the full wheels are not accelerated and not slipped, the full-wheel slip flag (allslip) F is set at 0 (S330). Since the full wheels are not accelerated and not slipped, a value, which is obtained by adding the predetermined value Vmar to the estimated car-body speed VTO, is set at the target wheel speed Vwo (S340). Throttle is controlled so that the wheel speed achieves the target wheel speed Vwo (S350).
KATAOKA MOTOAKI
SUZUKI HIDEAKI
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