Alfred Teves Gmbh

Itt Manufacturing Enterprises, Inc.

Uwe Kley

Peter Drott

Michael Vogt

Gilbert Bischoff

Horst Kr&auml;mer

Jose Gonzales

Wolfgang Kirchner

Sigmund Booten

Cristiano Hoffmann

A brake power booster for automotive vehicles includes a control valve that is operable by an electromagnet irrespective of an actuating rod displacing a valve piston, the electromagnet actuating a third sealing seat which permits ventilation of the working chamber. The valve member of the control valve has passages which allow a pneumatic pressure compensation. To eliminate a pneumatic force component which counteracts the force generated by the electromagnet, the passages are provided radially outside the area delimited by the electromagnetically operable sealing seat on the sealing surface of the valve member.

Pneumatic brake power booster with control housing having an electromagnetically operable control valve

To substantially eliminate the noise arising upon actuation of a vacuum brake force booster caused by incoming air, the housing section confining the ventable working chamber and/or the intervals in the control valve housing are lined with an insulating composition for attenuating noise.

Vacuum brake force booster with acoustic insulation

An arrangement for mounting a brake power booster to the mud guard of an automotive vehicle. The booster is actuated by means of a push rod. An adapter which partly surrounds the booster housing is arranged between the brake power booster and the mud guard. To eliminate the engine and suction noises of the brake power booster which have a disturbing effect in the passenger compartment of the automotive vehicle and to simultaneously seal the passenger compartment, the adapter presents a ventilation port and a seal is provided between the adapter and the mud guard which is simultaneously brought in abutment against the push rod as a radial seal.

Arrangement for the fixation of a brake power booster

Growing community of inventors

Frankfurt am Main, Germany

Uwe Kley