Patent ID: 7922264
Filing Date: 2011-04-12
Classification: B60T

Abstract:
1. A hydraulic vehicle brake system, comprising: a service brake actuated by muscle power force on the brake pedal; a master cylinder for actuating the vehicle brake system; and an electrohydraulic pedal travel modulator having a piston-cylinder unit that communicates with the master cylinder, having an electric motor drive mechanism which is controlled as a function of an actuation travel of the master cylinder in such a way that a volume of pressure fluid positively displaced into the master cylinder by the pedal travel modulator has a hydraulic pressure that corresponds to the hydraulic pressure in the master cylinder generated by the muscle force on the brake pedal from the service brake, and having a piston reverse-stroke limiter, which limits a reverse stroke of the modulator piston in a release direction of the vehicle brake system, wherein the piston reverse-stroke limiter is embodied as a spring ring inserted into a groove of the cylinder.