Knorr-bremse Systeme Fuer Nutzfahrzeuge Gmbh

Nicolas Savagner

Johann Baumgartner

Michael Herges

Eduard Gerum

Uwe Neumann

Matthias Gradl

Dirk Ganzhorn

Alain Fantazi

Matthias Schaefer

Antony Schodrowski

Wolfgang Kiener

Stephan Lange

Bence Csàk

Thierry Maille

Matthias Schäfer

A combined service brake and the stored-energy brake cylinder is provided, in which a ventilation valve which forms or shuts off a flow connection between the spring chamber and the service brake chamber of the brake cylinder ensures that disruptive noise is avoided while also preventing loss of air volume for building up the service brake force.

Combined service brake and stored-energy brake cylinder with internal ventilation

A parking brake for a commercial vehicle equipped with an air-operated service brake is configured in such a way that the actuating energy for the brake is reduced in comparison to a configuration with a spring brake cylinder, while the installation space in the wheel area is minimized. Primary functional parts of the parking brake include an inner race and an outer race, which delimit an annular gap. Displaceable tapered-roller bearings are located in the annular gap. To adopt a release position in opposition to the action of a compression spring, the tapered roller bearings are disengaged from the conical surfaces of the inner race and the outer race.

Parking brake

A combined service brake and spring brake cylinder for the braking system of a motor vehicle, in particular for utility vehicles, includes service and spring brake pistons guided inside a casing which is common for the two brake cylinders. The spring brake piston is loaded by at least one storage spring and has an external diameter greater than that of the service brake piston. The spring brake piston is in the form of an annular piston, and at least a part of the rod thereof is constructed in the form of a piston tube, which surrounds the service brake piston and forms an external radial running and sealing surface therefor.

Combined service brake and spring brake cylinder assembly

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Le Mesnil Eudes, France

Nicolas Savagner