Tandem master cylinder with limited-motion booster piston at pedal-remote end of master cylinder and with booster fluid cut valve

摘要

A hydraulic braking system includes a piston disposed at a wall end of the bore of a master cylinder so as to move a normally open valve mechanism of the master cylinder toward a closed position by applying an output pressure from a boost device or dynamic hydraulic generator. Due to applying the output pressure of the boost device or the dynamic hydraulic pressure generator to the piston, the initial stroke of the brake pedal is reduced by decreasing the idle stroke of the master cylinder and the braking pressure is ensured from the master cylinder when the output pressure of the boost device or the dynamic hydraulic pressure generator is not applied.