A temperature adaptive piston design for swash plate type axial piston machines

Authors

  • Lizhi Shang Department of Agricultural and Biological Engineering, Purdue University, West Lafayette, IN, USA
  • Monika Ivantysynova Department of Agricultural and Biological Engineering, Purdue University, West Lafayette, IN, USA

DOI:

https://doi.org/10.1080/14399776.2016.1213115

Keywords:

Axial piston machine, piston/cylinder interface, thermal deformation, energy dissipation in fluid film

Abstract

The authors propose a temperature adaptive piston design for axial piston machines of swash plate type. The proposed piston helps to keep the film thickness between piston and cylinder close to optimal with respect to energy dissipation while operating temperature can changein a wide range. The authors utilize the thermal deformation of piston and cylinder, which varies with temperature, to design the interface that adapt the gap height to compensate the change of the fluid viscosity with the temperature. An in-house developed fluid-structure and thermal interaction model together with recently developed port and case temperature prediction model are used to analyze the piston/cylinder interface and to predict resulting part temperatures, deformations, the fluid film properties and resulting energy dissipation, friction and leakage of the proposed novel design. The results show a reduction of energy dissipation over a large range of operating temperature for the proposed design compared to the baseline design.

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Author Biographies

Lizhi Shang, Department of Agricultural and Biological Engineering, Purdue University, West Lafayette, IN, USA

Lizhi Shang Born on 25 March 1989 in Tianjin (China). He received his B.S. degree in Thermal Energy and Power Engineering from Huazhong University of Science and Technology in 2011 and his M.S. degree in Mechanical Engineering in New Jersey Institute of Technology in 2013. He is currently a PhD student at Maha Fluid Power Research Center in Purdue University. His main research interests are modeling and optimizing of hydraulic pumps/motors.

Monika Ivantysynova, Department of Agricultural and Biological Engineering, Purdue University, West Lafayette, IN, USA

Monika Ivantysynova Born on 11 December 1955 in Polenz (Germany). She received her MSc. Degree in Mechanical Engineering and her PhD. Degree in Fluid Power 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 (Germany). From 1999 until August 2004 she was Professor of Mechatronic Systems at the Technical University of Hamburg-Harburg. Since August 2004 she is Professor at Purdue University, USA. 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’ published in German and English, she has published more than 80 papers in technical journals and at international conferences.

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Published

2017-03-01

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