A method for the safe operation of a brake force amplifier system, brake force amplifier system and the diagnostic apparatus for carrying out the process for this purpose.

摘要

A method for the safe operation of a brake force amplifier system (bkv) with suction air for a brake system of a vehicle driven with an internal combustion engine, wherein, by means of a pressure sensor (ds) a in the brake pressure reservoir (s) of the braking force amplifier system (bkv) the prevailing pressure value (p) is detected, the actuation (brn; br, brl) of the brake is monitored and a in the brake force amplifier system (bkv) of errors occurring (f) is detected by the of the pressure sensor (ds) sensed pressure value (p) in dependence on the actuation (brn; br; brl) of the brake is evaluated, characterized in that the intake pipe pressure (ps) in the internal combustion engine of the vehicle is captured and with a predeterminable first pressure tolerance (dps) is acted upon, and in that it is checked whether the detected pressure value (p) which is smaller than the intake pipe pressure (ps + dps), if for a predefinable time period (t1), no actuation (brn) of the brake is present.