Patent ID: 6755486
Filing Date: 2004-06-29
Classification: B60T

Abstract:
A vehicle motion control system comprising:a wheel brake cylinder for applying a braking force to a wheel; an automatic hydraulic pressure generator which generates hydraulic braking pressure by driving a vacuum booster irrespective of brake pedal operation; a hydraulic pressure control valve disposed between the automatic hydraulic pressure generator and the wheel brake cylinder to adjust hydraulic brake pressure supplied to the wheel brake cylinder; brake control means for performing vehicle motion control by controlling the automatic hydraulic pressure generator and the hydraulic pressure control valve in accordance with a vehicle motion condition irrespective of brake pedal operation; vacuum pressure detecting means for detecting a vacuum pressure of the vacuum booster; and the brake control means controlling starting of vehicle motion control to restrict starting of vehicle motion control when the vacuum pressure which drives said vacuum booster is relatively smaller compared to when the vacuum pressure which drives said vacuum booster is relatively larger.