BRAKE SYSTEM

摘要

In one embodiment of the brake system, the connection of the master cylinder and the slave cylinder to the wheel brakes can be switched by the first switching valve and the second switching valve, and the communication with the slave cylinder can be cut off by the first cutoff valve and the second cutoff valve. This enables the fluid pressures which are applied to the wheel brakes to be put in the various states without having a complex configuration, thereby making it possible to control the fluid pressures with good efficiency in such a way as to match suitably the conditions of the brake system and the conditions of the vehicle.

主权项

1. A brake system comprising a first brake system which communicates with at least one wheel brake of a plurality of wheel brakes and a second brake system which communicates with the remaining wheel brakes, the brake system comprising:
a master cylinder for generating a fluid pressure to be applied to the wheel brakes through operation of a brake operator by a driver; a slave cylinder for generating a fluid pressure by employing an electric actuator which is driven based on a traveling amount of the brake operator ; a first hydraulic fluid line which is provided on the first brake system and which establishes a communication from the master cylinder to the wheel brakes; a second hydraulic fluid line which is provided on the second brake system and which establishes a communication from the master cylinder to the wheel brakes; a first communication line which establishes a communication from the slave cylinder to the first hydraulic fluid line; a second communication line which establishes a communication from the slave cylinder to the second hydraulic fluid line; a first switching valve which is provided in a communicating position between the first hydraulic fluid line and the first communication line to switch between a state where a fluid pressure in the master cylinder is given to the wheel brakes through the first hydraulic fluid line and a state where a fluid pressure in the slave cylinder is given to the wheel brakes through the first communication line and the first hydraulic fluid line; a second switching valve which is provided in a communicating position between the second hydraulic fluid line and the second communication line to switch between a state where a fluid pressure in the master cylinder is given the wheel brakes through the second. hydraulic fluid line and a state where a fluid pressure in the slave cylinder is given to the wheel brakes through the second communication line and the second hydraulic fluid line; a first cutoff valve which is provided on the first communication line to cut off the first communication line; a second cutoff valve which is provided on the second communication line to cut off the second communication line; and control valve modules which are provided individually downstream of the first switching valve in the first hydraulic fluid line and downstream of the second switching valve in the second hydraulic fluid line to control a fluid pressure to be applied to each wheel brake.