Patent ID: 8180550

Claim:
A slip suppression control system for a vehicle comprising: a monitored value detecting device for detecting a monitored value corresponding to a difference between a rotational speed of a front wheel of the vehicle and a rotational speed of a rear wheel of the vehicle; a threshold determiner unit configured to determine a relationship between the monitored value detected by the monitored value detecting device and plural thresholds; and a controller configured to execute traction control for reducing a driving power of a drive wheel based on determination of the threshold determiner unit; wherein the plural thresholds have at least first and second thresholds, and the second threshold is set larger than the first threshold; wherein the traction control includes an amount-change-based control such that a parameter corresponding to the driving power in a state where the traction control is being executed is made smaller in a case where the monitored value is larger than the second threshold than in a case where the monitored value is larger than the first threshold and smaller than the second threshold; wherein the traction control includes initial traction control and continued traction control executed continuously after the initial traction control; wherein in the initial traction control, the amount-change-based control is performed, and the parameter is controlled to be a constant value in a period when a magnitude relationship between the monitored value and the plural thresholds continues to be unchanged; and wherein in the continued traction control, the parameter is feedback-controlled so that the monitored value is closer to a target value.