Patent ID: 8544965

Claim:
A brake system, comprising: a master cylinder having a piston, and being configured to generate brake fluid pressure by movement of the piston; a booster configured to actuate the piston of the master cylinder; wheel cylinders; a hydraulic pressure control mechanism disposed between the master cylinder and the wheel cylinders, the hydraulic pressure control mechanism including a pump configured to perform pressure-intensification control and pressure-reduction control of the brake fluid pressure for the wheel cylinders; and a control device configured to control the hydraulic pressure control mechanism, the control device being connected to a hydraulic pressure detection device configured to detect the brake fluid pressure generated in the master cylinder, the control device being configured to perform the pressure-reduction control for returning brake fluid in the wheel cylinders to the master cylinder by driving the pump of the hydraulic pressure control mechanism when the hydraulic pressure detection device detects that hydraulic pressure is equal to or higher than a predetermined hydraulic pressure after the actuation of the piston by the booster is released, to increase the hydraulic pressure of the master cylinder.