东南大学学报（英文版）2021，Vol.37Issue(4)：365-371,7.DOI:10.3969/j.issn.1003-7985.2021.04.004
基于不同凹陷纹理的发动机润滑和摩擦性能提升方法
Method of ameliorating the lubrication and friction performance of an engine based on different microtextures
摘要
Abstract
A design of different microtextures on the surface of the crankpin beating (CB) is proposed to ameliorate the lubrication and friction performance (LFP) of engines.On the basis of the CB's hydrodynamic lubrication model,the bearing surface of CB using different microtextures,such as wedge-shaped textures (WSTs),square textures (STs),circular textures (CTs),and combined square-circular textures(CSCTs),is simulated and assessed under various external loads of the CB at an engine speed of 2000 r/min.The pressure of the oil film,the frictional force,the force of the solid asperity contact,and the friction coefficient of the CB are used as objective functions.Results indicate that the beating surface designed by the STs remarkably improves the CB's LFP in comparison with other structures of WSTs,CTs,and CSCTs.Particularly,the average values of the frictional force,solid asperity contact,and friction coefficient of the CB using the STs are greatly reduced by 28.5％,14.5％,and 33.2％ and by 34.4％,26.3％,and 43.6％ in comparison with the optimized CB dimensions and CTs,respectively.Therefore,the application of the STs on the CB surfaces can enhance the LFP of engines.关键词
曲柄销轴承/微结构/润滑和摩擦性能/纹理Key words
crankpin bearing/microtextures/lubrication and friction performance (LFP)/texture分类
交通工程引用本文复制引用
阮文廉,张建润,焦仁强..基于不同凹陷纹理的发动机润滑和摩擦性能提升方法[J].东南大学学报（英文版）,2021,37(4):365-371,7.基金项目
The National Key Research and Development Pro-gram of China (No.2019YFB2006402),the Open Fund Project of Hu-bei Key Laboratory of Intelligent Transportation Technology and De-vice,Hubei Polytechnic University (No.2021XZ107),the Key Scien-tific Research Project of Hubei Polytechnic University (No.21xjz02A). （No.2019YFB2006402）
