Patent ID: 8224545

Claim:
A brake control apparatus, comprising: multiple wheel cylinders that apply braking forces to respective wheels in accordance with hydraulic fluid pressures; a wheel cylinder pressure control system that controls the hydraulic fluid pressures in the multiple wheel cylinders by using a power hydraulic pressure source that pressurizes hydraulic fluid using power; a manual hydraulic pressure source that includes a master cylinder which pressurizes hydraulic fluid stored in the master cylinder in accordance with a brake operation input, and a regulator which regulates hydraulic fluid pressure in accordance with hydraulic fluid pressure in the master cylinder by using the power hydraulic pressure source as a high-pressure source; a hydraulic pressure booster mechanism that amplifies the brake operation input by using the hydraulic fluid pressure in the regulator, and outputs the amplified brake operation input to the master cylinder; a hydraulic fluid supply path that connects the manual hydraulic pressure source to the multiple wheel cylinders, wherein, in a brake mode which is used as a backup control mode, the hydraulic fluid supply path is divided into a master cylinder-side system, through which the hydraulic fluid is supplied from the master cylinder to at least one of the wheel cylinders, and a regulator-side system, through which the hydraulic fluid is supplied from the regulator to the other of the wheel cylinders; and a controller that terminates a control executed by the wheel cylinder pressure control system and changes a control mode to the brake mode used as the backup control mode when a malfunction is detected, and that shuts off a flow of the hydraulic fluid in the regulator-side system when it is determined that the malfunction is a malfunction due to hydraulic fluid leakage caused in the regulator-side system.