Hydraulische Kraftfahrzeugbremsanlage mit Radschlupfregelung

摘要

The invention concerns a hydraulic motor vehicle braking system with wheel slip regulation operating according to the recirculating principle, with a primary circuit (2) which establishes the pressure medium connection between a brake pressure transmitter (8) and at least one wheel brake (12), and with a secondary circuit (3) which is separated from the wheel brake(s) (12) in the slip-free normal braking position without brake release and comprises at least one pressure-modulating valve (5) that is closed in the basic position and a pressure medium path that leads to a recirculating pump (6), a closure body (1) connecting the secondary circuit (3) to the primary circuit (2) when the braking system is evacuated. The closure body (1) consists of a material which, under the influence of brake fluid, assumes a variation in shape and/or volume such that, when the braking system has been evacuated and filled, the primary circuit (2) is separated from the secondary circuit (3).