Approach jump

The approach jump is a term from hydraulics . In a hydraulic circuit with a 2-way flow control valve, it describes a briefly unregulated and increased volume flow when switching on.

Before the volume flow is switched on, the pressure compensator of the flow control valve is fully opened via the spring , since the pressure before, after and in the valve is the same in the idle state . When the hydraulic circuit is switched on, for example via a directional control valve , initially only one throttle point with only a slight pressure drop is effective. The volume flow control is only effective when a pressure difference has been set at the measuring orifice of the pressure compensator.

literature

• Dieter Will, Hubert Ströhl, Norbert Gebhardt (Eds.): Hydraulics - Basics, Components, Circuits , 2nd Edition, Springer Verlag Berlin Heidelberg New York, 2004, ISBN 3-540-20116-5 . Extract chap. 8.2 Flow valves