Patent ID: 6871918

Claim:
A method for the reliable operation of a brake booster system which is used in combination with an internal combustion engine which includes an intake tube, said brake booster system having a brake actuator and a brake pressure reservoir, said method comprising: providing a pressure sensor; sensing a sensed pressure value prevailing in the brake pressure reservoir of the brake booster system with the pressure sensor; monitoring actuation of the brake actuator; determining if an error occurs in the brake booster system by evaluating the monitored actuation of the brake actuator and the sensed pressure value; acquiring a pressure of the intake-tube and applying a presettable first pressure tolerance to said acquired pressure to produce an acted-upon intake-tube pressure; determining whether the sensed pressure value is lower than the acted-upon intake-tube pressure when there is no actuation of the brake actuator for a presettable time period; and regulating pressure of the brake booster system.