Hydraulische Fremdkraftfahrzeugbremsanlage mit wenigstens einem elektrisch steuerbaren Ventil

摘要

An external power source for a hydraulic vehicle braking system, actuated by an external force, having electrically controllable first and second valves is to be protected against overload. To eliminate the use of a prior art safety valve to protect the external power source, it is proposed that the first valve (5) be constructed as a seat valve with a valve seat (28) connected via an upstream inlet port (26) to the external power source (3) with a closing member (29) allocated to the valve seat (28) and a closing spring (30) pressing the closing member (29) against the valve seat (28) designed according to the invention as a safety valve spring. The first valve (5) acts economically as a safety valve protecting the external power source (3) and, for braking operations, as a valve for adjusting wheel braking pressures.