计及润滑油输送的内燃机活塞二阶运动研究

doi:10.3901/JME.2021.06.164

机械工程学报 ›› 2021, Vol. 57 ›› Issue (6): 164-170.doi: 10.3901/JME.2021.06.164

• 可再生能源与工程热物理 • 上一篇下一篇

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计及润滑油输送的内燃机活塞二阶运动研究

孙军¹, 张潇¹, 朱剑雄¹, 高亚明¹, 李彪², 朱少禹¹, 李悦¹, 任燕平³, 朱桂香³

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. 潍柴动力股份有限公司潍坊 261001

收稿日期:2020-02-01 修回日期:2020-08-06 出版日期:2021-03-20 发布日期:2021-05-25
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技术与方法。E-mail：sunjun_hfut@163.com
基金资助:
国家自然科学基金(51490660，51490661，50975073)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 IC Engine Considering the Lubricating Oil Transport

SUN Jun¹, ZHANG Xiao¹, ZHU Jianxiong¹, GAO Yaming¹, LI Biao², ZHU Shaoyu¹, LI Yue¹, REN Yanping³, ZHU Guixiang³

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. Weichai Power Company Limited, Weifang 261001

Received:2020-02-01 Revised:2020-08-06 Online:2021-03-20 Published:2021-05-25

摘要/Abstract

摘要： 内燃机活塞二阶运动直接影响活塞对气缸的拍击、产生的噪声及活塞裙部-缸套摩擦副的润滑、摩擦和磨损。目前内燃机活塞二阶运动分析中一般认为活塞裙部-缸套摩擦副在一个内燃机工作循环所有行程全部处于充分润滑状况，而实际中当活塞上行(向上止点运动)时，入口处的润滑油量不一定能保证该摩擦副处于充分润滑状况。以某四行程内燃机为研究对象，结合活塞运动模型、流体润滑模型、微凸体接触模型和润滑油流动模型，进行了活塞二阶运动特性分析。结果表明，与以往认为所有行程中活塞裙部-缸套摩擦副全部处于充分润滑的分析比较，考虑实际润滑油输送确定活塞上行期间摩擦副的润滑状况时，活塞二阶运动特性(活塞裙顶部和底部位移、速度等)都有较明显的变化。

关键词: 内燃机, 活塞, 二阶运动, 润滑油输送

Abstract: The piston secondary motion of internal combustion (IC) engine has direct influence on the clap of piston against the cylinder, the generated noise and the lubrication, friction and wear of piston skirt-cylinder liner frictional conjunction. In current analysis of the piston secondary motion for IC engine, the piston skirt-cylinder liner frictional pair is usually supposed to be lubricated sufficiently in all strokes of an operating cycle of engine. In fact, the status of sufficient lubrication of this frictional pair may not be guaranteed by the actual quantity of lubricating oil at entrance during the piston upstroke. In this paper, a four-stroke IC engine is taken as the studying object, the performance of the piston secondary motion is analyzed based on the model of piston motion, the model of fluid lubrication, the model of asperity contact and the model of lubricating oil flow. The results show that compared with the current analysis in which the sufficient lubrication in all strokes is assumed, the performance of the piston secondary motion(displacement and velocity at top and bottom of piston skirt) is changed obviously when the lubrication status of the frictional pair during the piston upstroke is determined by the actual transport of lubricating oil.

Key words: internal combustion engine, piston, secondary motion, lubricating oil transport

中图分类号:

TK402

孙军, 张潇, 朱剑雄, 高亚明, 李彪, 朱少禹, 李悦, 任燕平, 朱桂香. 计及润滑油输送的内燃机活塞二阶运动研究[J]. 机械工程学报, 2021, 57(6): 164-170.

SUN Jun, ZHANG Xiao, ZHU Jianxiong, GAO Yaming, LI Biao, ZHU Shaoyu, LI Yue, REN Yanping, ZHU Guixiang. On the Piston Secondary Motion of IC Engine Considering the Lubricating Oil Transport[J]. Journal of Mechanical Engineering, 2021, 57(6): 164-170.

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计及润滑油输送的内燃机活塞二阶运动研究

On the Piston Secondary Motion of IC Engine Considering the Lubricating Oil Transport

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