Patent ID: 9592809
Date: 2017-03-14
CPC Classifications: B60T

Claim:
1. A motor vehicle brake system, which includes a hydraulic service brake system and an additional service brake system, the hydraulic service brake system having a muscular force-actuatable master cylinder with a brake booster and one or more hydraulic wheel brakes that are connected to the master cylinder, the brake booster configured to produce a pedal force that counteracts an actuation force, wherein said brake booster includes; a push rod operable to actuate the master cylinder; a pedal rod connected to a muscular force-actuatable brake pedal and operable to apply an actuation force to said push rod upon actuation of the brake pedal; an actuator selectively engageable to produce the pedal force by engagement to a selected one of said pedal rod and said push rod; and a motor coupled to said actuator and operable to drive said actuator toward said pedal rod when said actuator is engaged to one of said pedal rod and said push rod, thereby applying a force on said pedal rod that counteracts the actuation force.