Patent ID: 8676465
Filing Date: 2014-03-18
Classification: B60T

Abstract:
1. 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 and at least one threshold; and a traction control unit configured to execute traction control including initial traction control and continued traction control executed continuously after the initial traction control, based on a determination of the threshold determiner unit; wherein the traction control unit is configured to initiate the initial traction control for reducing a driving power of a drive wheel when the threshold determiner unit determines that the monitored value exceeds a first slip threshold regardless of a difference between the monitored value and the first slip threshold at a start of slip; wherein the traction control unit is configured to execute the continued traction control such that the driving power is reduced when the threshold determiner unit determines that the monitored value exceeds a second slip threshold which is smaller than the first slip threshold, while the driving power is increased when the threshold determiner unit determines that the monitored value is smaller than the second slip threshold; wherein the traction control unit sets a parameter corresponding to the driving power at a predetermined constant value when the initial traction control is initiated, the predetermined constant value making the driving power smaller than does a value to which the parameter is set when executing the continued traction control; and wherein the traction control unit increases the parameter to increase the driving power at the beginning of the continued traction control.