Patent ID: 6533367
Filing Date: 2003-03-18
Classification: B60T

Abstract:
Method of controlling a traction slip of a vehicle on a roadway with sidewise different coefficients of friction, comprising the steps of:identifying a driving situation on a roadway with sidewise different coefficients of friction and, when the driving situation is identified and traction slip is encountered on both wheels, decreasing the brake pressure on the driven wheel on the low coefficient-of-friction side, further including the steps of: determining which vehicle side is the high coefficient-of-friction side and which is the low coefficient-of-friction side, checking whether the slip of the driven wheel on the high coefficient-of-friction side is above a first threshold value, checking whether the slip of the driven wheel on the low coefficient-of-friction side is above a second threshold value, checking whether an acceleration of the traction slip or a wheel acceleration of the driven wheel on the high coefficient-of-friction side is above a positive threshold value and whether the acceleration of the traction slip or the wheel acceleration of the driven wheel on the low coefficient-of-friction side is below a negative threshold value, and checking the brake pressures on the two wheels or comparing the brake pressures one to the other, wherein when checking the brake pressures, the brake pressure on the low coefficient-of-friction side is checked as to whether it is above a third threshold value, and the brake pressure on the high coefficient-of-friction side is checked as to whether it is below a fourth threshold value.