Vacuum Brake Booster and Method for the Operation Thereof

A method of operation of a vacuum brake booster of a vehicle brake system, comprising a housing which is subdivided by at least one movable partition into at least one vacuum chamber and at least one working chamber, with the vacuum chamber being connected to a vacuum source by way of a vacuum port, and with a sensor unit being associated with the vacuum chamber, sensing a pressure in the vacuum chamber and supplying a sensed pressure value to an electronic control unit, the electronic control unit including an evaluating unit for evaluating the sensed pressure value in the vacuum chamber and calculating an operating point of the vacuum brake booster solely on the basis of the sensed pressure within the vacuum chamber,

• wherein plausibilisation of the sensed pressure measured by the sensor unit is performed to identify defects of the sensor unit or the vacuum brake booster.

Vacuum brake booster of a vehicle brake system, comprising:

• a housing which is subdivided by at least one movable partition into at least one vacuum chamber and at least one working chamber,
• the vacuum chamber being connected to a vacuum source by way of a vacuum port,
• a sensor unit being associated with the vacuum chamber, the sensor unit being configured for sensing a pressure in the vacuum chamber and supplying a sensed pressure value to an electronic control unit, the sensor unit including an evaluating unit for evaluating the sensed pressure value in the vacuum chamber and calculating an operating point of the vacuum brake booster solely on the basis of the sensed pressure in the vacuum chamber, and a means for performing plausibilisation of the sensed pressure value measured by the sensor unit and identifying defects of the sensor unit or the vacuum brake booster.