Unsteady Flow through a Valve Plate Restrictor in a HydraulicPump/Motor Unit
2012 (English)Conference paper, Poster (Refereed)
Noise is a well known challenge in hydraulic systems. Hydrostatic machines are amongthe largest noise contributors in a hydraulic system. The noise from the machine originatesfrom flow pulsations at the discharge and suction ports, as well as pulsations inpiston forces and bending moments. This article investigates the dynamic behaviour ofunsteady flow through a valve plate in an axial piston pump. The proposed extension ofthe steady state restrictor equation includes a dynamic internal mass term and a resistance.The results from 1D model are validated with a 3D CFD model. Different valveplates’ configurations and pump sizes are easily simulated with the two simulation models.The simulation results show very good comparison with experimental tests. Theproposed method is verified with a hydraulic pump application but it can probably alsoapply for original restrictors too.
Place, publisher, year, edition, pages
2012. 135-147 p.
Engineering and Technology
IdentifiersURN: urn:nbn:se:liu:diva-85659OAI: oai:DiVA.org:liu-85659DiVA: diva2:572341
8th International Fluid Power Conference