内燃机工程2024，Vol.45Issue(5)：37-46,10.DOI:10.13949/j.cnki.nrjgc.2024.05.005
自集油涂层对凸轮-挺柱副限量润滑性能影响研究
Study on the Effects of Self-Oil Collection Coating on the Limited Lubrication Performance of Cam-Tappet Pairs
摘要
Abstract
A patterned functional surface with arc-shaped oleophobic zones alternating with the original oleophilic zones was designed and prepared to achieve automatic aggregation of a small amount of lubricant and to explore the improvement of limited lubrication performance on the cam-tappet sub-surface.The results show that the coated functional surface leads to a wettability gradient on the surface of the cam-tappet sub-surface,limiting the directional flow of the lubricant without external force,increasing the oil supply amount to the contact area and thus improving the lubrication performance.The effects of oleophilic track width on lubricant return are not uniform,and a suitable width design can produce a good oil collection effect.The high viscosity lubricant is hindered by the pinning effect to flow outward during the extrusion stage.The moving parts are in a serious oil-shortage state when the oil supply amount is reduced to 0.5 μL,and the oil collection surface cannot play a role in improving the lubrication effect.关键词
凸轮-挺柱/润湿性梯度/限量供油/自集油增强Key words
cam-tappet/wettability gradient/limited oil supply/self-oil collection enhancement分类
机械工程引用本文复制引用
李常腾,李书义,刘明海..自集油涂层对凸轮-挺柱副限量润滑性能影响研究[J].内燃机工程,2024,45(5):37-46,10.基金项目
国家自然科学基金项目(52005278)National Natural Science Foundation of China(52005278) （52005278）
