초록 ▼

An anti-skid brake control system for an automotive vehicle is provided with a fluid pump operative during releasing mode of anti-skid control operation to reduce the fluid pressure in a wheel cylinder. The fluid pump is driven even when the anti-skid control is performed in holding mode for holding

An anti-skid brake control system for an automotive vehicle is provided with a fluid pump operative during releasing mode of anti-skid control operation to reduce the fluid pressure in a wheel cylinder. The fluid pump is driven even when the anti-skid control is performed in holding mode for holding the fluid pressure in a wheel cylinder at a constant value. The fluid pump is disabled when the wheel speed is zero and the anti-skid control is performed in other than releasing mode. Thus, wasting of vehicle battery power by unnecessarily driving the fluid pump is avoided.

대표청구항 ▼

An anti-skid brake control system for an automotive vehicle comprising: a hydraulic brake circuit including a wheel cylinder for applying braking force to a vehicle wheel; a pressure control valve disposed within said hydraulic brake circuit for increasing the fluid pressure in said wheel cylinder i

An anti-skid brake control system for an automotive vehicle comprising: a hydraulic brake circuit including a wheel cylinder for applying braking force to a vehicle wheel; a pressure control valve disposed within said hydraulic brake circuit for increasing the fluid pressure in said wheel cylinder in its first position, decreasing the fluid pressure in its second position and holding the fluid pressure at a constant value in its third position; an electrical fluid pump associated with said wheel cylinder and operative in response to a control signal which controls the position of said pressure control valve to said second position to reduce the fluid pressure in said wheel cylinder; a wheel speed detector means for producing a wheel speed indicative signal; a controller for controlling said pressure control valve to operate the latter to one of said first, second and third positions depending upon a braking condition determined based on predetermined braking parameters including said wheel speed; and means, responsive to said controller operating said pressure control valve at said second position, for driving said fluid pump and maintaining the fluid pump in operation for a given period of time after termination of the operation of the pressure control valve at said second position, said fluid pump driving means disabling said fluid pump when said wheel speed indicative signal represents the wheel speed zero.