Antislip control hydraulic braking system with precharging pump

摘要

To precharge the self-priming return pump (17) of an antislip control braking system, for example at low temperatures, the invention proposes that a precharging pump (28) be situated between reservoir (22) and master cylinder (1) to deliver pressure medium into one or both of the feed connections (23, 24) to the master cylinder (1), said pressure medium reaching the suction side of the return pump (17) through the switching of an electromagnetic reversing valve (19) and an electromagnetic block valve (4). For normal braking a line fitted with an on-off valve (27) is provided between reservoir (22) and master cylinder (1). This on-off valve (27) is closed for purposes of precharging the return pump (17). The on-off valve (17) can be either an electromagnetically actuated valve or else a hydraulically actuated valve.