不同工况下活塞二阶运动和活塞裙部润滑研究

doi:10.3901/JME.2019.10.175

机械工程学报 ›› 2019, Vol. 55 ›› Issue (10): 175-184.doi: 10.3901/JME.2019.10.175

• 可再生能源与工程热物理 • 上一篇下一篇

不同工况下活塞二阶运动和活塞裙部润滑研究

孙军¹, 朱剑雄¹, 刘广胜², 黄祥¹, 李彪², 朱少禹¹, 苗恩铭³, 郝飞飞¹, 胡新亮², 李悦¹

1. 合肥工业大学汽车与交通工程学院合肥 230009;
2. 合肥工业大学机械工程学院合肥 230009;
3. 合肥工业大学仪器科学与光电工程学院合肥 230009

收稿日期:2018-09-13 修回日期:2019-01-12 出版日期:2019-05-20 发布日期:2019-05-20
作者简介:孙军,男,1960年出生,博士,教授,博士研究生导师。主要研究方向为摩擦学和现代设计理论与方法,发表论文150余篇。E-mail:sunjun_hfut@163.com
基金资助:
国家自然科学基金（50975073，51490660，51490661）和内燃机可靠性国家重点实验室开放基金（skler-201708）资助项目

On the Piston Secondary Motion of Piston and Lubrication of Piston Skirt at Different Operating Conditions

SUN Jun¹, ZHU Jianxiong¹, LIU Guangsheng², HUANG Xiang¹, LI Biao², ZHU Shaoyu¹, MIAO Enming³, HAO Feifei¹, HU Xinliang², LI Yue¹

1. School of Automotive and Transportation Engineering, Hefei University of Technology, Hefei 230009;
2. School of Mechanical Engineering, Hefei University of Technology, Hefei 230009;
3. School of Instrument Science and Opto-electronics Engineering, Hefei University of Technology, Hefei 230009

Received:2018-09-13 Revised:2019-01-12 Online:2019-05-20 Published:2019-05-20

摘要/Abstract

摘要： 目前研究内燃机活塞二阶运动和活塞裙-缸套摩擦副润滑时一般仅针对标定工况进行，不考虑实际使用内燃机工作中工况的不断变化。另外，分析中一般都假设活塞裙-缸套摩擦副在一个内燃机工作循环中处于充分润滑状况。以某四行程内燃机为研究对象，基于实测的气缸压力，考虑实际润滑油流动确定摩擦副的润滑状况，进行不同内燃机工况下的活塞二阶运动和活塞裙-缸套摩擦副润滑分析。结果表明，不同工况下的活塞二阶运动性能和活塞裙-缸套摩擦副润滑性能都存在差异，活塞二阶运动性能和活塞裙-缸套摩擦副润滑性能的最不利情况不一定出现在标定工况。因此，内燃机活塞组件设计时，如果仅分析标定工况下的活塞二阶运动和活塞裙-缸套摩擦副润滑性能将不够全面合理，需要进行不同工况下活塞二阶运动和活塞裙-缸套摩擦副润滑性能的分析计算。

关键词: 表面张力, 表面织构, 承载力, 计算流体动力学（CFD）, 摩擦因数, 神经网络, 二阶运动, 工况, 活塞, 活塞裙, 内燃机, 润滑

Abstract: Current research on the piston secondary motion and the lubrication of piston skirt-cylinder liner friction conjunction for internal combustion engine is generally carried out in rated operating condition, and the constant change of operating condition for actual used internal combustion engine is not considered. In addition, the piston skirt-cylinder liner friction conjunction is usually supposed to be lubricated sufficiently in all strokes of an operating cycle of internal combustion engine in current analysis. A four-stroke internal combustion engine is taken as the studying object, based on measured cylinder pressure, the piston secondary motion and the lubrication of piston skirt-cylinder liner friction conjunction considering the lubrication status determined by the actual flow of lubricating oil in different operating conditions of internal combustion engine are analyzed. The results show that there are the differences of the piston secondary motion and the lubricating characteristics of piston skirt-cylinder liner friction conjunction in different operating conditions, and the worst condition may not be in rated operating condition. Therefore, it is not comprehensive and reasonable that the piston secondary motion and the lubrication of piston skirt-cylinder liner friction conjunction are analyzed only in rated operating condition, and it is necessary to calculate the piston secondary motion and the lubrication of piston skirt-cylinder liner friction conjunction in different operating conditions in the design of piston set.

Key words: load-carrying capacity, computational fluid dynamics（CFD）, friction coefficient, neural network, surface tension, surface texture, IC engine, lubrication, operating condition, piston, piston skirt, secondary motion

中图分类号:

TK40

孙军, 朱剑雄, 刘广胜, 黄祥, 李彪, 朱少禹, 苗恩铭, 郝飞飞, 胡新亮, 李悦. 不同工况下活塞二阶运动和活塞裙部润滑研究[J]. 机械工程学报, 2019, 55(10): 175-184.

SUN Jun, ZHU Jianxiong, LIU Guangsheng, HUANG Xiang, LI Biao, ZHU Shaoyu, MIAO Enming, HAO Feifei, HU Xinliang, LI Yue. On the Piston Secondary Motion of Piston and Lubrication of Piston Skirt at Different Operating Conditions[J]. Journal of Mechanical Engineering, 2019, 55(10): 175-184.

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不同工况下活塞二阶运动和活塞裙部润滑研究

On the Piston Secondary Motion of Piston and Lubrication of Piston Skirt at Different Operating Conditions

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