Journal of South China University of Technology (Natural Science Edition) ›› 2014, Vol. 42 ›› Issue (7): 74-79.doi: 10.3969/j.issn.1000-565X.2014.07.012

• Mechanical Engineering • Previous Articles     Next Articles

Characteristics of Clearance Leakage and Friction Torque of Slipper Pair in Axial Piston Pump

Tang He-sheng Yin Yao-bao Li Jing   

  1. School of Mechanical Engineering,Tongji University,Shanghai 200092,China
  • Received:2013-12-31 Revised:2014-04-28 Online:2014-07-25 Published:2014-06-01
  • Contact: 訚耀保(1965-)，男，教授，博士生导师，主要从事流体传动及控制基础理论研究． E-mail:y-yin@tongji.edu.cn
  • About author:汤何胜(1985-)，男，博士生，主要从事液压泵/马达设计研究． E-mail:tanghesheng321200@163．com
  • Supported by:

    国家自然科学基金资助项目( 51175378， 51275356) ; 航空科学基金资助项目( 20120738001， 20128038003)

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Abstract:

This paper discusses the clearance leakage and friction torque changes of slipper pair in axial pistonpump with different cylinder speeds,different cylinder pressures and different centrifugal force arm sizes.The resultsshow that ( 1) the cylinder speed,the cylinder pressure and the centrifugal force arm size are important parametersaffecting the clearance leakage of slipper pair which are related to pressing force,dynamic-pressure effectand centrifugal moment of slipper; ( 2) the friction torque increases with the increase of clearance leakage; ( 3) theactual clearance leakage and friction torque loss of piston pump increase as cylinder pressure and speed increase,and they are greater than their theoretical value due to the effects of piston pair and valve plate pair; and ( 4) theclearance leakage and friction torque loss of slipper have smaller effect on the volumetric efficiency and mechanical efficiency of axial piston pump.

Key words: axial piston pump, slipper pair, clearance leakage, friction torque

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