Continental Teves, Ag and Company Ohg

Klaus Lind

Jürgen Faller

A pneumatic brake servo which can be acted on by a pneumatic differential pressure is described. The brake servo includes an actuable input member comprising a valve piston, an output member for acting on a master brake cylinder, and a control valve which is arranged in a control housing and which can be actuated by the valve piston for controlling the differential pressure. An elastic reaction element is arranged in a control housing recess and against which the output member bears. The input member acts with an input effective area Aon the reaction element, and the output member acts with an output effective area Aon the reaction element. The ratio of output effective area Ato input effective area Adetermines the force boost ratio of the brake servo. Means are provided for adjusting the output effective area Ain the assembled brake servo.

Pneumatic brake servo

A pneumatic brake booster with a booster housing is subdivided into at least one working chamber and at least one vacuum chamber by means of at least one axially movable wall capable of being acted upon with a pneumatic differential pressure. An actuable input member includes a valve piston, with an output member for acting upon a brake master cylinder with an output force. A control valve is arranged in a control housing and can be actuated by the valve piston for controlling the differential pressure. An elastic reaction element is arranged in a control housing recess and against which the output member bears. Means for setting a distance z between the valve piston and the reaction element are provided on the output member.

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Wölfersheim, Germany

Klaus Lind