Vehicle brake system

摘要

The object of the present invention is to provide a vehicle brake system capable of appropriately setting an upper limit value of hydraulic pressure of a by-wire brake during stopping of a vehicle in accordance with conditions. When the vehicle is stopped, a maximum allowable drive voltage calculation unit sets a maximum allowable drive voltage to V2, and sets a brake pressure generated by a motor to P2. When the vehicle is stopped, if a duration time of stopping of the vehicle or a duration time of generation of the brake pressure exceeds a reference value, the maximum allowable drive voltage calculation unit sets the maximum allowable drive voltage to V3, and sets the brake pressure generated by the motor to P3 which is lower than P2.

主权项

1. A vehicle brake system comprising:
a braking force generating unit that generates a braking force of a vehicle; an operation detection unit that detects an operation of a brake pedal; a hydraulic pressure generating unit that drives a motor to operate the braking force generating unit by a hydraulic pressure in response to a detection of the operation by the operation detection unit; a stop state determination unit that determines whether or not the vehicle is in a stop state; and a setting unit that sets an upper limit value of the hydraulic pressure generated by the hydraulic pressure generating unit to a first upper limit value in a case where the stop state determination unit determines that the vehicle is in the stop state, and sets the upper limit value of the hydraulic pressure generated by the hydraulic pressure generating unit to a second upper limit value which is always lower than the first upper limit value in a case where a predetermined condition is established when the hydraulic pressure is the first upper limit value.