METHOD FOR OPERATING A BRAKE SYSTEM FOR A VEHICLE AND CONTROL DEVICE FOR A BRAKE SYSTEM OF A VEHICLE

摘要

A method for operating a brake system for a vehicle, the brake system including a master brake cylinder coupled to an electromechanical brake booster having a booster body. The method involves: From an initial position, displacing the booster body relative to the master brake cylinder by an adjusting travel in the direction towards the master brake cylinder into an end position; from the end position, displacing the booster body relative to the master brake cylinder by the same adjusting travel in an opposite direction away from the master brake cylinder back into the initial position; during the step of displacing the booster body from the end position back into the initial position, sucking hydraulic fluid from wheel brake devices that coupled in a fluid manner with the brake system and assigned to wheels of the vehicle, for the reduction of a hydraulic fluid pressure existing in the wheel brake devices.

主权项

1. A method for operating a brake system for a vehicle, wherein the brake system includes a master brake cylinder coupled to an electromechanical brake booster having a booster body, the method comprising:
controlling at least one wheel outlet valve of at least one wheel brake cylinder of at least one first brake circuit of the brake system in its open state, while taking into account at least one provided sensor signal with respect to an operating strength of an operation of a brake operating element situated on the master brake cylinder in such a way that a brake pressure buildup in the at least one first brake circuit becomes able to be limited to a response pressure of a fluid accumulator device of the respective brake circuit; displacing the booster body from an initial position relative to the master brake cylinder in a direction towards the master brake cylinder by a specified adjustment travel into an end position, in order to raise a travel differential between an input rod of the electromechanical brake booster and the booster body, during the step of displacing the booster body (26c) the at least one wheel outlet valve remaining opened; and displacing the booster body from the end position relative to the master brake cylinder in an opposite direction away from the master brake cylinder by the same adjustment travel back into the initial position, in order to reduce the travel differential between the input rod and the booster body, during the step of displacing the booster body from the end position back into the initial position the at least one wheel outlet valve being present in a closed manner in such a way that hydraulic fluid is sucked away from wheel brake devices that are coupled in a fluid manner to the brake system and assigned to wheels of the vehicle for a reduction of a hydraulic fluid pressure existing in the wheel brake devices.