Patent ID: 9050949
Filing Date: 2015-06-09
Classification: B60T

Abstract:
1. A braking apparatus that generates braking force by driving a motor, comprising: a reservoir to retain operating fluid; a wheel cylinder provided in each of a plurality of wheels; a brake pedal operated by a driver; an operating state detector configured to detect an operating state of the brake pedal; a master cylinder including both a fluid pressure chamber into/from which the operating fluid can be introduced or discharged, and a piston configured to slide in the direction where the pressure of the operating fluid in the fluid pressure chamber is increased/reduced in accordance with a stepping-on operation of the brake pedal; a fluid pressure circuit that is provided between the master cylinder and the wheel cylinder provided in each of the plurality of wheels, and that includes both a first system flow channel connecting the reservoir and at least one of the plurality of wheel cylinders and a second system flow channel connecting at least one of the plurality of wheel cylinders and the master cylinder, and the fluid pressure circuit supplies the operating fluid to each of the wheel cylinders; a pump provided in the first system flow channel and driven by the motor to increase the fluid pressure of the operating fluid to be supplied from the reservoir to one of the wheel cylinders; and a control unit configured to control a driving state of the pump in order to drive, when a predetermined fail condition for braking control has been satisfied, the motor in accordance with information detected by the operating state detector, and configured to execute fail-safe control for providing braking force by supplying the operating fluid discharged from the pump to the fluid pressure chamber in the master cylinder.