液压与气动2025，Vol.49Issue(4)：22-30,9.DOI:10.11832/j.issn.1000-4858.2025.04.003
鼓形柱塞结构对轴向柱塞泵柱塞副润滑性能影响
Effect of the Drum-shaped Piston Structure on the Lubrication Performance of Piston-cylinder Interface in Axial Piston Pump
摘要
Abstract
The piston-cylinder interface,as a key friction pair in an axial piston pump,directly affects its reliability and service life.This paper establishes the Reynolds equation and force equation for the piston-cylinder interface,and solves them using discretization in MATLAB.A comparative analysis of the minimum film thickness,film pressure,friction,and leakage between the drum-shaped and conventional piston-cylinder interfaces under the same conditions is conducted.The results show that,compared to the conventional piston-cylinder interface,the drum-shaped piston-cylinder interface has a larger minimum film thickness,improving lubrication performance.It also exhibits distinct pressure peaks,with more significant squeezing effects on the film.The drum-shaped piston reduces axial and circumferential viscous friction,enhancing fluid flow efficiency,but increases leakage during motion,reducing sealing performance.These findings provide a theoretical basis for improving the lubrication performance of the piston-cylinder interface.关键词
轴向柱塞泵/鼓形柱塞副/润滑性能Key words
axial piston pump/drum-shaped piston-cylinder interface/lubrication performance分类
机械工程引用本文复制引用
廖名辉,葛磊,孙斌,肖刚,欧阳光明,张宏博..鼓形柱塞结构对轴向柱塞泵柱塞副润滑性能影响[J].液压与气动,2025,49(4):22-30,9.基金项目
国家重点研发计划(2023YFB3406600) （2023YFB3406600）
江苏省科技计划专项重点项目(BE2022096) （BE2022096）
