液压与气动Issue(5)：13-19,7.DOI:10.11832/j.issn.1000-4858.2018.05.003
考虑油液黏压特性的高压航空液压泵柱塞副泄漏模型研究
Leakage Model Considering Viscosity-pressure Properties of Oil for Piston-cylinder Pair of High Pressure Aviation Hydraulic Pump
摘要
Abstract
Increasing the pressure of the hydraulic system can improve the power density of the hydraulic system.However,with the increase of the speed of the hydraulic pump and the increase of pressure,the wear of the pistoncylinder pair,one of the key friction pairs,is aggravated and the leakage is increased.A leakage model of pistoncylinder pair in a high pressure aviation hydraulic pump is presented in this paper,considering the pressure-viscosity properties of oil.Combined with the Barus pressure-viscosity properties formula,this model is supplemented and modified to a certain extent on the basis of the classical leakage formula,so as to more accurately calculate the leakage of the high pressure aviation hydraulic pump's piston-cylinder pair in various wear degrees.The simulation results show that the pressure of the system reaches 35 MPa,and the change of leakage caused by viscosity change can not be ignored.关键词
黏压特性/高压/航空液压泵/柱塞副/泄漏量Key words
viscosity-pressure properties/high pressure/aviation hydraulic pump/piston-cylinder pair/leakage flow分类
机械制造引用本文复制引用
李元,王少萍,石健,郑硕..考虑油液黏压特性的高压航空液压泵柱塞副泄漏模型研究[J].液压与气动,2018,(5):13-19,7.基金项目
国家重点基础研究发展计划(973计划)(2014CB046405) （973计划）
