Patent ID: 6676230
Filing Date: 2004-01-13
Classification: B60T

Abstract:
A vehicle motion control device comprising:a plurality of wheel cylinders provided on respective wheels of a vehicle; an automatic hydraulic pressure generator for generating a brake hydraulic pressure irrespective of operation of a brake pedal; a hydraulic pressure control valve device provided between the automatic hydraulic pressure generator and the respective wheel cylinders for controlling a brake hydraulic pressure of respective wheel cylinders; and control means for performing a vehicle motion control by controlling the automatic hydraulic pressure generator in accordance with a vehicle motion condition of the vehicle irrespective of the operation of the brake pedal and by controlling the hydraulic pressure control valve device; the automatic hydraulic pressure generator comprising: a linear solenoid; a vacuum booster operating at least in accordance with operation of the brake pedal; and a booster actuator for actuating the vacuum booster by controlling the linear solenoid based on a predetermined target electric current irrespective of the operation of the brake pedal; the control means instantaneously increasing the target electric current of the linear solenoid to an electric current value which corresponds to an electric value immediately before the vacuum booster starts the operation and which is lower than a maximum value of the target electric current of the linear solenoid, and increasing the target electric current of the linear solenoid to approach the maximum value of the target electric current when the brake pedal is not operated.