Experimental investigation of the effect of grooves cut over the piston surface on the volumetric efficiency of a radial hydraulic piston pump

Authors

  • Mohammad Javad Saheban Alahadi Department of Mechanical Engineering, Najafabad Branch, Islamic Azad University, Najafabad, Iran and Modern Manufacturing Technologies Research Center, Najafabad Branch, Islamic Azad University, Najafabad, Iran
  • Alireza Shirneshan Department of Mechanical Engineering, Najafabad Branch, Islamic Azad University, Najafabad, Iran and Modern Manufacturing Technologies Research Center, Najafabad Branch, Islamic Azad University, Najafabad, Iran
  • Mojtaba Kolahdoozan Department of Mechanical Engineering, Najafabad Branch, Islamic Azad University, Najafabad, Iran and Modern Manufacturing Technologies Research Center, Najafabad Branch, Islamic Azad University, Najafabad, Iran

DOI:

https://doi.org/10.1080/14399776.2017.1337440

Keywords:

performance, groove, volumetric efficiency, Radial hydraulic piston pump

Abstract

A radial piston pump often used in high pressure applications. The geometry of the pistons used affects the mechanical and volumetric efficiency of the pump and its long term performance. In the present study, the effect of grooves cut on the piston surface, the number of the grooves and their location over the piston surface on the volumetric efficiency of the hydraulic radial piston pumps was investigated. In order to perform the research tests, the three-piston fixed displacement pump with seven configurations was firstly designed and fabricated. The output flow rate of the pump was determined at pressure outlets of 350 and 500 bar and then the volumetric efficiency was calculated as the mean values of measured data. The results showed that the grooves cut on the piston surface produces a higher piston–cylinder overall leakage and then tend to reduce the volumetric efficiency. Also as the number of grooves being cut on piston surface increases, an increase in leakage will happen. In addition, by increasing the outlet pressure from 350 to 500 bar, the volumetric efficiency decreased significantly for the pumps with higher number of grooves cut. Among the configurations studied, pump with one groove at the inner edge at second groove position is the one bringing the best performance because of the minimum reduction in the volumetric efficiency between grooved piston pumps and producing higher restoring torque at all pump configurations according to previous literature.

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Author Biographies

Mohammad Javad Saheban Alahadi, Department of Mechanical Engineering, Najafabad Branch, Islamic Azad University, Najafabad, Iran and Modern Manufacturing Technologies Research Center, Najafabad Branch, Islamic Azad University, Najafabad, Iran

Mohammad Javad Saheban Alahadi, the author of the paper is a Mechanical Engineer. He received his MSc from Najafabad Branch, Islamic Azad University in 2015. His research interests are in the areas of Hydraulic and Manufacturing.

Alireza Shirneshan, Department of Mechanical Engineering, Najafabad Branch, Islamic Azad University, Najafabad, Iran and Modern Manufacturing Technologies Research Center, Najafabad Branch, Islamic Azad University, Najafabad, Iran

Alireza Shirneshan, the corresponding author of the paper, is a Researcher and University Faculty Member. He received his PhD from Science and Research Branch, Islamic Azad University in 2012. He is an affiliate assistant professor of Mechanical Engineering at Najafabad Branch, Islamic Azad University. His research interests are in the areas of Hydraulic, Energy, Biofuels and Internal Combustion Engines.

Mojtaba Kolahdoozan, Department of Mechanical Engineering, Najafabad Branch, Islamic Azad University, Najafabad, Iran and Modern Manufacturing Technologies Research Center, Najafabad Branch, Islamic Azad University, Najafabad, Iran

Mojtaba Kolahdoozan, the corresponding author of the paper, is a researcher and University Faculty Member. He received his PhD from Science and Research Branch, Islamic Azad University in 2012. He is an affiliate assistant professor of Mechanical Engineering at Najafabad Branch, Islamic Azad University. His research interests are in the areas of Hydraulic, Machining, MEMS.

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Published

2017-11-01

How to Cite

Alahadi, M. J. S., Shirneshan, A., & Kolahdoozan, M. (2017). Experimental investigation of the effect of grooves cut over the piston surface on the volumetric efficiency of a radial hydraulic piston pump. International Journal of Fluid Power, 18(3), 181–187. https://doi.org/10.1080/14399776.2017.1337440

Issue

2017: Vol 18 Iss 3

Section

Original Article