Patent ID: 6463378
Filing Date: 2002-10-08
Classification: B60T

Abstract:
A brake control device for a vehicle having first and second road wheels comprising:a brake pedal; a brake pedal operational condition detecting device for detecting an operational condition of the brake pedal; first and second wheel brake cylinders responsive to supplied hydraulic pressure for applying brake torque to the first and second road wheels, respectively; a hydraulic pressure generating device for generating hydraulic pressure in response to operation of the brake pedal and for generating hydraulic pressure independently of operation of the brake pedal, the hydraulic pressure generating device being hydraulically connected to the first and second wheel cylinders; a hydraulic pressure control valve device disposed between the hydraulic pressure generating device and the first wheel brake cylinder for regulating hydraulic pressure in the first wheel cylinder supplied from the hydraulic pressure generating device and disposed between the hydraulic pressure generating device and the second wheel brake cylinder for regulating hydraulic pressure in the second wheel brake cylinder supplied from the hydraulic pressure generating device independently of regulation of hydraulic pressure in the first wheel brake cylinder; first control means responsive to vehicle motion under a non-operated condition of the brake pedal for activating the hydraulic pressure generating device and activating the hydraulic pressure control valve device to supply hydraulic pressure to one of the first and second wheel brake cylinders corresponding to one of the first and second road wheels to be controlled in response to the vehicle motion and to regulate hydraulic pressure in the one wheel brake cylinder, and to inhibit supplying hydraulic pressure to the other of the first and second wheel brake cylinders corresponding to the other of the first and second road wheels which is not to be controlled in response to the vehicle motion; and second control means responsive to the brake pedal operational condition detected by the brake pedal operational condition detecting device under an activated condition of the pressure control valve device by the first control means, for controlling operation of the hydraulic pressure control valve device to supply hydraulic pressure to the other wheel brake cylinder without obstructing hydraulic pressure regulating performance of the first control means with respect to the one wheel brake cylinder.