AN INVESTIGATION INTO MICRO- AND MACROGEOMETRIC DESIGN OF PISTON/CYLINDER ASSEMBLY OF SWASH PLATE MACHINES

Authors

  • Monika Ivantysynova Technical University of Hamburg-Harburg, Institute for Aircraft Systems Engineering, Nesspriel 5, 21129 Hamburg, Germany
  • Rolf Lasaar Technical University of Hamburg-Harburg, Institute for Aircraft Systems Engineering, Nesspriel 5, 21129 Hamburg, Germany

Keywords:

axial piston machine, piston cylinder assembly, pressure field, friction force, gap flow, surface roughness, friction force measurement

Abstract

This paper presents main results of an investigation of the tribological system formed by the piston/cylinder assem-bly of swash plate axial piston machines. Main focus has been given to the influence of a piston macro and micro geom-etry variation on energy dissipation generated by piston/cylinder assembly. Using the simulation tool CASPAR, which has been developed at the Institute for Aircraft Systems Engineering, an optimization of the piston shape has been realized to achieve minimum energy dissipation in a wide range of operating parameters of the axial piston machine. Micro ge-ometry stands for surface roughness here. Its influence has been investigated within a second task especially in the area of low speed, where full lubrication is not achievable and therefore mixed friction occurs. For the investigation a special friction force measurement test rig has been developed, which has also been used for verification of the simulation tool CASPAR.

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Author Biographies

Monika Ivantysynova, Technical University of Hamburg-Harburg, Institute for Aircraft Systems Engineering, Nesspriel 5, 21129 Hamburg, Germany

Monika Ivantysynova Born on December 11th 1955 in Polenz (Germany). She received her MSc. Degree in Mechanical Engineering and her PhD. Degree in Hydraulics from the Slovak Technical University of Bratislava, Czechoslovakia. After 7 years in fluid power industry she returned to university. In April 1996 she received a Professorship in fluid power & control at the University of Duisburg (Germa-ny). At present she is Professor of Mechatron-ic Systems at the Technical University of Hamburg-Harburg. Her main research areas are energy saving actuator technology and model based optimisation of displacement machines as well as modelling, simulation and testing of fluid power systems. Besides the book “Hydrostatic Pumps and Motors” pub-lished in German and English, she has pub-lished more than 60 papers in technical journals and at international conferences

Rolf Lasaar, Technical University of Hamburg-Harburg, Institute for Aircraft Systems Engineering, Nesspriel 5, 21129 Hamburg, Germany

Rolf Lasaar Born on August 9th 1969 in Mülheim a. d. Ruhr (Germany), study of mechanical engi-neering at the Gerhard Mercator University of Duisburg, diploma thesis in the area of fuzzy controllers at the Department of Measurement and Control Engineering of Gerhard Mercator University of Duisburg. From 1997 through 2002 research fellow at this department and at the Institute for Aircraft Systems Engineering at the Technical University of Hamburg-Harburg - Doctor degree in 2002. Meanwhile working for Linde AG, Material Handling, Aschaffenburg, Germany

References

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Published

2004-03-01

How to Cite

Ivantysynova, M., & Lasaar, R. (2004). AN INVESTIGATION INTO MICRO- AND MACROGEOMETRIC DESIGN OF PISTON/CYLINDER ASSEMBLY OF SWASH PLATE MACHINES. International Journal of Fluid Power, 5(1), 23–36. Retrieved from https://journals.riverpublishers.com/index.php/IJFP/article/view/592

Issue

2004: Vol 05 Iss 1

Section

Original Article

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