Abstract: A brake control device for a vehicle has a master cylinder that converts an operating force of a brake pedal to a fluid pressure, a wheel cylinder installed in each wheel of the vehicle that generates a braking force by a fluid pressure introduced in each wheel, an introduction section that introduces the fluid pressure generated by the master cylinder, a first switching valve disposed in a fluid passage connecting the master cylinder and the wheel cylinder, and closes at system startup and opens at system non-startup/failure, a second switching valve disposed in a branch fluid passage connecting the master cylinder and the introduction section and opens at the system startup and closes at the system non-startup/failure, and a brake controller. When the system is started after the depression operation of the brake pedal, the brake controller closes the second switching valve.

Abstract: A brake control device for a vehicle has a master cylinder that converts an operating force of a brake pedal to a fluid pressure, a wheel cylinder installed in each wheel of the vehicle that generates a braking force by a fluid pressure introduced in each wheel, an introduction section that introduces the fluid pressure generated by the master cylinder, a first switching valve disposed in a fluid passage connecting the master cylinder and the wheel cylinder, and closes at system startup and opens at system non-startup/failure, a second switching valve disposed in a branch fluid passage connecting the master cylinder and the introduction section and opens at the system startup and closes at the system non-startup/failure, and a brake controller. When the system is started after the depression operation of the brake pedal, the brake controller closes the second switching valve.

Abstract: A vehicle brake apparatus has a wheel cylinder that generates a braking force when a pump is rotated in a first direction and does not generate the braking force when the pump is rotated in a second direction. A brake control section operates a valve to open a channel between the pump and the wheel cylinder and rotates the pump in the first direction to increase the braking force in accordance with a driver braking operation. The brake control section operates the valve to close the channel between the pump and the wheel cylinder to maintain the braking force in accordance with the driver braking operation. The brake control section rotates the pump in the second direction when the driver braking operation is not performed. The diagnosis section detects a rotation state of the pump while the pump rotates in the second direction to diagnose abnormalities in the pump.

Abstract: [TASK] It is an object to provide a brake device and a method of controlling the brake device, capable of suppressing an inrush current during a startup period of an electric booster. [MEANS TO SOLVE] In a brake device having an input rod, a piston for pressurizing a fluid pressure in a master cylinder responsively to a displacement of the input rod, and an electric booster for pushing the piston against a spring bias of a return spring of the piston and for assisting a movement of the piston in a direction for pressurizing of the fluid pressure, an input-rod displacement detection device is provided for detecting the displacement of the input rod.

Abstract: A vehicle brake apparatus has a wheel cylinder that generates a braking force when a pump is rotated in a first direction and does not generate the braking force when the pump is rotated in a second direction. A brake control section operates a valve to open a channel between the pump and the wheel cylinder and rotates the pump in the first direction to increase the braking force in accordance with a driver braking operation. The brake control section operates the valve to close the channel between the pump and the wheel cylinder to maintain the braking force in accordance with the driver braking operation. The brake control section rotates the pump in the second direction when the driver braking operation is not performed. The diagnosis section detects a rotation state of the pump while the pump rotates in the second direction to diagnose abnormalities in the pump.