BRAKING SYSTEM WITH A VACUUM-TYPE BRAKE SERVO FOR A VEHICLE HAVING DIRECT BRAKING CONTROL MEANS

摘要

Braking system with a vacuum-type brake servo for a vehicle having direct braking control means (hill-holder or traction control). In order to implement this direct braking function, a partition (52) is made integral with the servo piston (20, 22), defining with the latter a third chamber (50). Said chamber is connected, by means of a flexible tube (66) and a dual valve (73), either to a vacuum (78) or to ambient pressure (76). The standard piston structure is thereby left intact.