Knorr-bremse Systeme Fuer Nutzfahrzeuge Gmbh

Mustafa Uslu

Karsten Schnittger

Andreas Leinung

Oliver Kaupert

Max Michalski

Stefan Langenbach

Stefan Wyen

A relay valve is provided for a vehicle. The valve includes a parking brake piston that is displaceable in a housing and an axially displaceable cuff, a first compressed-air chamber for receiving compressed air from a control line is formed between the parking brake piston and the housing. The valve is also provided with a first spring element, which axially applies a pre-loading force to the cuff, and with a second spring element, which axially applies another pre-loading force to the parking brake piston. An axially displaceable service brake piston is arranged axially between the parking brake piston and the cuff, the service brake piston rests at least radially against the parking brake piston and radially against the housing in a sealing manner, in order to form a second compressed-air chamber.

Dual-piston relay valve having an anti-compounding function

A valve device is provided for a pneumatic brake system of a commercial vehicle and comprises a pilot piston, radial seals and at least one valve seat, which can be displaced in the direction of motion of the pilot piston.

Valve device, electrically operable parking brake system and method for controlling an electrically operable parking brake system

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Munich, Germany

Mustafa Uslu