Abstract
The ripple in the outlet flow from a high-pressure piston pump is caused by pressure pulses in the piston cavity when it rotates through the transition region of the valve plate. We propose a parametric design that optimizes the transition region structure of a piston pump valve plate to reduce the ripple in the outlet flow. For a high- pressure piston pump, a theoretical model of the piston cavity is developed that includes fluid compression properties and leakages. The piston pump parametric model is built using AMESIM software and a simulation is conducted. The results show that the ripple in the outlet flow is affected by the outlet pressure and the pump’s speed and by the structure of the pre-compression region of the valve plate. To minimize the ripple in the outlet flow from the piston pump, the structural parameters in the pre-compression region are optimized as the design variables using the software, ISIGHT, which integrates the piston pump parametric model in AMESIM. After optimization, the ripple in the outlet flow rate is, respectively, reduced by 37.05 %, 38.54 % and 41.04 % for outlet pressures of 200 bar, 300 bar and 400 bar. Finally, a flow ripple test experiment is performed to verify the simulation results.
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Recommended by Associate Editor Sangyoup Lee
Xiao-feng Wu received a Ph.D. in Mechanical and Electronic Engineering from Shang Hai Tongji University, China, in 2012. He is currently an Associate Professor of Mechanical and Vehicle Engineering, Changzhou Institute of Technology, China. His research interests are IN hydraulic components design and electromechanical design and control.
Chih-Keng Chen received a Ph.D. in Systems and Control Engineering from Case Western Reserve University, Cleveland, OH, USA, in 1993. He is currently an Associate Professor of Vehicle Engineering, National Taipei University of Technology, Taipei, Taiwan. His current research interests are IN hydraulic systems, vehicle dynamics, vehicle braking control systems.
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Wu, X., Chen, C., Hong, C. et al. Flow ripple analysis and structural parametric design of a piston pump. J Mech Sci Technol 31, 4245–4254 (2017). https://doi.org/10.1007/s12206-017-0823-8
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DOI: https://doi.org/10.1007/s12206-017-0823-8