Patent ID: 8702181
Filing Date: 2014-04-22
Classification: B60T

Abstract:
1. A method of controlling a brake system comprising the following steps: providing at least two piston-cylinder arrangements ( providing an actuating unit ( providing a brake pedal ( providing a hydraulic circuit operatively connected to the piston-cylinder arrangements ( providing a pressure-regulating valve arrangement ( providing a driver intention registering device ( providing a hydraulic fluid reservoir ( providing an electrical power supply ( providing an electronic control unit ( providing the first brake boosting function to boost a brake pressure generated by a vehicle driver in the first fall-back operating mode and not in the second fall-back operating mode, the brake system being configured to operate in a default brake-by-wire mode, the brake-by-wire mode including at least a first high-power operating mode operating with the first brake boosting function and a normal operating mode being a low-power operating mode without operating the first brake boosting function; and switching between the first high-power operating mode and the low-power operating mode as a function of a braking situation; determining that a brake operation requires braking, for which the low-power operating mode is sufficient; selecting the low-power operating mode; delivering pressure provided by the electrically controllable pressure source ( leaving the pressure held by the high-pressure accumulator (