초록 ▼

An antilock brake control for motor vehicles, wherein the actual wheel speed of each wheel of the vehicle is detected, and in dependency on the detected wheel speed, a reference vehicle speed is computed from which a reference wheel speed lower than the vehicle speed is determined, and wherein when

An antilock brake control for motor vehicles, wherein the actual wheel speed of each wheel of the vehicle is detected, and in dependency on the detected wheel speed, a reference vehicle speed is computed from which a reference wheel speed lower than the vehicle speed is determined, and wherein when the actual wheel speed decreases below the reference wheel speed as a result of braking operation, the braking hydraulic pressure acting on the wheel is decreased to allow the actual wheel speed to increase, and then the braking hydraulic pressure is reincreased when the actual wheel speed has recovered sufficiently. When a J-turn state of the vehicle is detected by lateral acceleration, the reference vehicle speed is changed to a lower value and a second reference wheel speed is determined on the basis of that lower value. The control of the braking operation is thus carried out in dependency on the second reference wheel speed shifted to a lower level, whereby the time when the braking hydraulic pressure is increased is advanced, and the time length during which the braking hydraulic pressure is decreased is shortened so that effective braking operation is carried out in the J-turn state.

대표청구항 ▼

In an antilock brake control method for a motor vehicle with an antilock brake responsive to braking hydraulic pressure and a wheel speed sensor provided to detect wheel speed, comprising the steps of: detecting an actual wheel speed responsive to output signal of said wheel speed sensor; setting a

In an antilock brake control method for a motor vehicle with an antilock brake responsive to braking hydraulic pressure and a wheel speed sensor provided to detect wheel speed, comprising the steps of: detecting an actual wheel speed responsive to output signal of said wheel speed sensor; setting a first reference vehicle speed responsive to said actual wheel speed; determining a first reference wheel speed responsive to said first reference vehicle speed; decreasing said braking hydraulic pressure when the actual wheel speed falls below said first reference wheel speed; reincreasing said decreased braking hydraulic pressure when the actual wheel speed exceeds said first reference wheel speed; and detecting a lateral acceleration responsive to lateral movement of the vehicle; the improvement comprising: determining a J-turn state of the vehicle when said lateral acceleration is in excess of a predetermined value; determining a second reference wheel speed representing a value lower than said first reference wheel speed at said J-turn state; and controlling the braking hydraulic pressure in dependency on the second reference wheel speed at said J-turn state, so as to delay timing of decreasing the braking hydraulic pressure and to advance timing of reincreasing the braking hydraulic pressure.