Bremsanlage mit einer Einrichtung zur Aktivbremsung

摘要

The invention concerns a drive slip-controlled hydraulic braking system comprising an active braking device and provided with an inlet pressure generator (17) which builds up inlet pressure in a brake circuit via a connection (5) to the reservoir of the master cylinder (1). To this end, disposed at a reservoir connection (5) is a valve which comprises a valve chamber (7) with a vertically rectilinear wall (11), inside which a valve body (12) is disposed so as to be axially displaceable. Above the valve body (12), the valve chamber (7) has an opening (13) to a reservoir space (6) in the pressurized medium reservoir (2). Below the valve body (12) a tube (16), which is connected to the delivery side of a pre-charging pump (17), leads into the valve chamber (7). The upper end (9) and the lower end (10) of the valve chamber (7) are connected by a bypass (8) in front of which the valve body (12) is displaced when the pre-charging pump (17) is operating, the valve body (12) simultaneously closing the opening (13) to the reservoir space (6). Thus, the pre-charging pump (17) can build up inlet pressure below the valve body (12) in the valve chamber (7), the inlet pressure spreading into the associated braking circuit via the reservoir port (3) and the master cylinder (1), whilst a pump in the braking circuit can automatically draw pressurized medium out of the reservoir space (6) via the bypass (8).