On the influence of axial cylinder distortions on lubricant film and friction force of top piston ring conjunction near to TDC

IF 1.6 Q4 MATERIALS SCIENCE, COATINGS & FILMS

Tribology - Materials, Surfaces & Interfaces Pub Date : 2022-08-19 DOI:10.1080/17515831.2022.2111045

P. Nikolakopoulos, Giorgos Antonakakis, A. Zavos

{"title":"On the influence of axial cylinder distortions on lubricant film and friction force of top piston ring conjunction near to TDC","authors":"P. Nikolakopoulos, Giorgos Antonakakis, A. Zavos","doi":"10.1080/17515831.2022.2111045","DOIUrl":null,"url":null,"abstract":"ABSTRACT The purpose of this paper was to understand how axial cylinder distortions influence the tribological performance of piston ring. The current model contains the effects of axial distortions and ring conformability under mixed to hydrodynamic regimes of lubrication through computational fluid dynamics predictions. The axial cylinder profiles were modelled using series of sinusoidal waves. The effect of axial distortions on ring wear rate was determined using the Archard’s model. The ring friction and minimum lubricant film were predicted for low and high combustion pressures near to top dead centre. The study shows that, when the maximum combustion pressure rises, the different wear identities affect the operation of the ring friction much more limited, while the number of sine waves are more pronounced. Finally, it is proved that, even the increase of oil film thickness, it does not presuppose the reduction of friction when it comes to shaping the surface of the cylinder liner. GRAPHICAL ABSTRACT","PeriodicalId":23331,"journal":{"name":"Tribology - Materials, Surfaces & Interfaces","volume":"16 1","pages":"356 - 372"},"PeriodicalIF":1.6000,"publicationDate":"2022-08-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Tribology - Materials, Surfaces & Interfaces","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1080/17515831.2022.2111045","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"MATERIALS SCIENCE, COATINGS & FILMS","Score":null,"Total":0}

引用次数: 0

Abstract

ABSTRACT The purpose of this paper was to understand how axial cylinder distortions influence the tribological performance of piston ring. The current model contains the effects of axial distortions and ring conformability under mixed to hydrodynamic regimes of lubrication through computational fluid dynamics predictions. The axial cylinder profiles were modelled using series of sinusoidal waves. The effect of axial distortions on ring wear rate was determined using the Archard’s model. The ring friction and minimum lubricant film were predicted for low and high combustion pressures near to top dead centre. The study shows that, when the maximum combustion pressure rises, the different wear identities affect the operation of the ring friction much more limited, while the number of sine waves are more pronounced. Finally, it is proved that, even the increase of oil film thickness, it does not presuppose the reduction of friction when it comes to shaping the surface of the cylinder liner. GRAPHICAL ABSTRACT

查看原文本刊更多论文

轴向缸变形对上止点附近上活塞环连接处润滑油膜和摩擦力的影响

摘要本文的目的是了解轴向缸变形对活塞环摩擦学性能的影响。通过计算流体动力学预测，目前的模型包含了混合流体动力润滑下轴向畸变和环一致性的影响。采用一系列正弦波对轴向圆柱轮廓进行了建模。利用Archard模型确定了轴向变形对环磨损率的影响。在接近上止点的低、高燃烧压力条件下，预测了环摩擦和最小润滑膜。研究表明，当最大燃烧压力升高时，不同磨损特性对环摩擦运行的影响更为有限，而正弦波的出现次数更为明显。最后证明，在缸套表面整形时，即使增加油膜厚度，也不以减小摩擦为前提。图形抽象

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Tribology - Materials, Surfaces & Interfaces MATERIALS SCIENCE, COATINGS & FILMS-

CiteScore

2.80

自引率

0.00%

发文量