Hydraulische Fahrzeugbremsanlage mit Radschlupfregelung sowie Ventil für eine solche Bremsanlage

摘要

The invention relates to a vehicle braking system with wheel slip control which is provided with a so-called filling valve, i.e. a non-return valve (5) between a secondary and a primary circuit. In order to fill the braking system with pressure fluid, both circuits are first evacuated, said secondary circuit being evacuated via the valve (5) which opens accordingly. The valve is provided with an auxiliary device (37, 35, 36) by which means the valve (5) opening pressure is automatically increased after the braking system has been filled with braking fluid. The opening pressure must be at least strong enough to ensure that the valve closing body (1) remains in the closed position, at least during normal operation of the braking system. This ensures that the secondary circuit is evacuated sufficiently in terms of its capacity to be refilled with braking fluid, without negative pressure being produced in the secondary circuit during a braking action later on.