Knorr-bremse Systeme Fur Schienenfahrzeuge Gmbh

Knorr-bremse Ag

Compagnie Industrielle De Materiel De Transport

Heinz Völbel

Georg Stauble

Tiberius Wieser

Steffen Krasselt

Thomas Garten

Claude Thiaville

Janos Visi

A pilot-controlled valve arrangement having at least one valve mechanism mounted in a valve housing for multi-stage switching of a compressed air flow between a feed pressure connection and a working line connection wherein a throttled compressed air flow can be switched in at least one switching stage by a throttle, wherein the pneumatic pilot control has a first control piston mounted in a first control chamber implemented in the valve housing and having a coaxial recess for forming a second control chamber in which a second control piston is mounted, so that an additive control pressure application to the control chambers generates a telescope-like deployment of a ram extending from the second control piston for generating a multi-stage switching stroke for the valve mechanism, in order to implement the throttled compressed air flow in at least one switching stage of the valve mechanism present between the closed and the open valve setting.

Multi-stage switchable pilot-controlled valve arrangement

The railborne bogie vehicle with electrohydraulic brakes and hydropneumatic leveling suspension has in each of its bogies a hydraulic pressure supply unit (9) from which pressure control valves (15, 16) parallel to each other provide pressure to both the hydraulic brakes (19) and the hydropneumatic suspension (20) of that bogie. The back pressure lines (26 and 32) of the electrohydraulic brakes (19) or of the hydropneumatic suspension (20) lead to a hydraulic tank or sump (10) associated with the pressure supply unit (9).

Bogie vehicle with electrohydraulic brakes and hydropneumatic suspension

Growing community of inventors

Munich, Germany

Heinz Völbel