Brake-force generator for a hydraulic vehicle brake system and equipped with this vehicle brake system

摘要

The present invention relates to a braking power generator (12) for a hydraulic vehicle brake system (10) with a force input element (54), which can be coupled or with a brake pedal, is coupled to a master brake cylinder (16), in which a primary piston (66, 70) is displaceably guided, wherein the primary piston (66) with the master brake cylinder (16) a primary pressure chamber (85) for generating a hydraulic brake pressure is limited, and an actuating force - generating means for exerting a force on the primary piston (66), wherein the actuation force - means for generating a control valve (20) and a chamber arrangement (26, 28), wherein the chamber arrangement can be closed with a negative pressure chamber (26) and one of the vacuum chamber (26) by means of a movable wall (24) separate, by means of the control valve (20) which can be connected for fluid flow chamber (28) is formed and wherein the control valve (20) has a control sleeve (30), according to a pedal actuation, to achieve a the actuating force is determined by the pressure difference between the working chamber (28) and the negative pressure chamber (26) relative to a valve element (38) is displaceable. The invention provides that the control valve (20) according to certain operating conditions, a displaceable control sleeve (42) is associated with, by means of the position of the relative movement between the control sleeve (30) and valve element (38) can be influenced.