Laser texturing of piston ring for tribological performance improvement

被引：9

作者：

Ferreira, Rita ^{[1
,2
,3
,4
]}

Carvalho, Oscar ^{[1
,2
]}

Sobral, Luis ^{[4
]}

Carvalho, Sandra ^{[3
]}

Silva, Filipe ^{[1
,2
]}

机构：

[1] Univ Minho, CMEMS UMinho, P-4800058 Guimaraes, Portugal

[2] LABBELS Associate Lab, P-4800058 Guimaraes, Portugal

[3] Univ Coimbra, CEMMPRE Ctr Mech Engn Mat & Proc, Rua Luis Reis Santos, P-3030788 Coimbra, Portugal

[4] Componentes Motores SA, MAHLE, Nucleo Ind Murtede, P-3060372 Cantanhede, Portugal

来源：

FRICTION | 2023年 / 11卷 / 10期

关键词：

piston ring; surface texture; friction; wear; SURFACE TEXTURE; FRICTION; LUBRICATION; WEAR; EFFICIENCY; CONTACT;

D O I：

10.1007/s40544-022-0723-5

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

The radial surface coating layer of compression piston rings is used to improve their wear resistance during the internal combustion engine operation. However, at top dead centers, the friction coefficient of the piston ring-cylinder liner pair is detrimental to the engine's tribological performance. In this work, dimples with different texture dimensions and densities were tested in a home-developed tribometer. The friction coefficient was measured for all samples, and for those with the best results, their wear resistance was assessed. The texture with an aspect ratio of 0.25 and a density area of 15% reported the best tribological results.

引用

页码：1895 / 1905

页数：11

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