| 摘要 |
The invention relates to a pneumatic brake booster having a booster housing which is divided into at least one working chamber (1) and at least one vacuum chamber (2) by at least one axially movable wall (6) which can be loaded with a pneumatic differential pressure, having an actuable input element which comprises a valve piston (4), an output element (11; 40) for loading a brake master cylinder (13) with an initial force, a control valve which is arranged in a control housing (3), can be actuated by the valve piston (4) and controls the differential pressure, and having an elastic reaction element (10) which is arranged in a control housing recess (8) and against which the output element (11; 40) bears, wherein means are provided which, if the brake booster is assembled, make it possible to set a spacing z between the valve piston (4) and the reaction element (10). The brake booster according to the invention is characterized in that the means for setting the spacing z are provided on the output element (11; 40). The invention makes simple realization possible of a very narrow scatter band and at the same time a simple construction of the brake booster. ® KIPO & WIPO 2009 |
