| 许磊宇,高园杰,刘妍,等.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. |
| 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 |
| DOI：10.13949/j.cnki.nrjgc.2025.02.013 |
| 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-viscositylubricants |
| 基金项目:国家自然科学基金项目（52175173）； 内燃机可靠性国家重点实验室开放课题项目（skler-202003） |
|
| 摘要点击次数: 136 |
| 全文下载次数: 87 |
| 摘要:为探究滚轮–销轴副的摩擦学性能，设计搭建了全凸轮周期内滚轮–销轴副摩擦力矩测量试验台，研究凸轮转速、弹簧初始载荷和机油黏度对滚轮–销轴副摩擦力矩的影响，并计算出滚轮–销轴副接触区法向载荷和摩擦系数。结果表明：滚轮–销轴副的摩擦力矩在凸轮鼻部区域较大，在凸轮基圆处较小且稳定。滚轮–销轴副接触区法向载荷受惯性力影响，凸轮转速越大，惯性力的影响越明显。滚轮–销轴副的平均摩擦力矩随着弹簧初始载荷的增加而增大，随着润滑机油黏度的下降而增大，在使用低黏度机油润滑时随着凸轮转速的增加先减小后增大，在使用较高黏度机油润滑时随着凸轮转速的增加逐渐增大。 |
| 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. |
|
查看全文 HTML
查看/发表评论 下载PDF阅读器 |