HYDRAULIC BRAKE SYSTEM

摘要

A decrease in control accuracy of brake cylinder fluid pressure due to vibration of fluid pressure caused in an upstream portion by activation of a slip control device during anti-lock control is suppressed. The vibration of the fluid pressure in the upstream portion is transmitted via a master cylinder pressurization piston and a regulator control piston to a control pressure chamber. On the other hand, during anti-lock control, a compression linear valve and a decompression linear valve are opened, whereby a volume change of the control pressure chamber is permitted and rigidity thereof is decreased. Thus, the vibration of the fluid pressure in the control pressure chamber is suppressed, and the vibration of the fluid pressure in a forward pressurization chamber is suppressed. As a result, the decrease in control accuracy of fluid pressure in a brake cylinder can be suppressed during anti-lock control implemented by utilizing the fluid pressure of the forward pressurization chamber, whereby an increase in braking distance can be successfully avoided.