Patent ID: 8695478

Claim:
A brake-by-wire system of a motor vehicle comprising: a) a brake booster operable both by an electronic control unit and an input member that is movable into a force-transmitting connection with a brake pedal, with a distance being provided between the brake pedal and the brake booster that allows decoupling a force-transmitting connection between the brake pedal and the brake booster in a brake-by-wire operating mode, b) a master brake cylinder connected downstream of the brake booster, c) a pedal travel simulator that cooperates with the brake pedal to allow simulating a resetting force that acts on the brake pedal in the brake-by-wire operating mode independently of an actuation of the brake booster, and d) a connecting and disconnecting device configured to activate the pedal travel simulator in the brake-by-wire operating mode when the force-transmitting connection between the brake pedal and the brake booster is decoupled and deactivate the pedal travel simulator outside of the brake-by-wire operating mode, e) a sensor device configured to detect when an operator causes brake pedal travel and subsequent reduction thereof, wherein the control unit is configured to activate the connecting and disconnecting device and actuate the brake booster upon reduction of the actuating travel of the brake pedal by a predetermined value, the predetermined value being less than a full release of the brake pedal, or in an event of a detected vehicle movement or a positive result of a monitoring function of the connecting and disconnecting device.