内燃机工程2025，Vol.46Issue(2)：111-120,10.DOI:10.13949/j.cnki.nrjgc.2025.02.013
内燃机气门机构滚轮-销轴副摩擦性能试验研究
Experimental Study on the Friction Performance of Roller-Pin Pair in the Valve Train of an Internal Combustion Engine
摘要
Abstract
In order to investigate the tribological performance of the roller-pin pair,a test rig was designed and constructed to measure the frictional torque of the roller-pin pair during the full cam cycle,to study the effects of cam speed,spring initial load and oil viscosity on the frictional torque of the roller-pin pair,and to calculate the normal load and friction coefficient of the contact area of the roller-pin pair.The results indicate that the friction moment of the roller-pin pair is greater in the cam nose region and smaller and more stable at the cam base circle.The normal load in the contact area of the roller-pin pair is influenced by inertia forces,which are more pronounced at higher cam speeds.The average frictional moment of the roller-pin pair increases with the increase of the initial spring load,increases with the decrease of the lubricating oil viscosity,decreases first and then increases with the increase of the cam speed when lubricated with low-viscosity oils,and gradually increases with the increase of the cam speed when lubricated with higher-viscosity oils.关键词
气门机构/滚轮-销轴摩擦副/摩擦力矩/低黏度润滑油Key words
valve train/roller-pin friction pair/friction torque/low-viscosity lubricants分类
机械工程引用本文复制引用
许磊宇,高园杰,刘妍,郭峰,晁珅..内燃机气门机构滚轮-销轴副摩擦性能试验研究[J].内燃机工程,2025,46(2):111-120,10.基金项目
国家自然科学基金项目(52175173) （52175173）
内燃机可靠性国家重点实验室开放课题项目(skler-202003) National Natural Science Foundation of China(52175173) （skler-202003）
Open Project of the State Key Laboratory of Internal Combustion Engine Reliability(skler-202003) （skler-202003）
