BREMSKRAFTVERSTÄRKER

摘要

A brake booster for a motor vehicle brake system of the“brake-by-wire”type, which can be activated, on the one hand, by a brake pedal and, on the other hand, as a function of a driver's request, as well as independently of the driver's will by an electronic control unit, wherein the coupling of the brake pedal to an input element of the brake booster is embodied by a piston rod head provided with longitudinal guide openings, in such a way that a limited relative movement of the brake pedal is possible with respect to the input element, as a result of which, in particular in the“brake-by-wire”operating mode, decoupling of the force-transmitting connection between the brake pedal and the input element is ensured. The piston rod head is embodied as a U-shaped bent part which engages around the brake pedal.