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http://dx.doi.org/10.5228/KSPP.2008.17.5.343

Effect of Coating Layer Hardness on the Wear Characteristics of Diesel Engine Cylinder liner-Piston Ring  

Jang, J.H. (부산대학교 정밀기계공학과/ 정밀정형 및 금형가공 연구소)
Kim, J.H. (두산엔진(주) 기술연구소)
Kim, C.H. (두산엔진(주) 기술연구소)
Moon, Y.H. (부산대학교)
Publication Information
Transactions of Materials Processing / v.17, no.5, 2008 , pp. 343-349 More about this Journal
Abstract
The wear between piston ring face and cylinder liner is an extremely unpredictable and hard-to-reproduce phenomenon that significantly decreases engine performance. This study will discuss characteristics of wear between hard and soft piston ring coatings with running surface of cylinder liner. Detailed tribological analysis by using Pin-on-Disk(POD) testing machine describes the lubricity mechanism between piston ring coatings and cylinder liner at different temperature with and without oil. The effect of surface roughness of the cylinder liner on the friction coefficient and wear amount of piston ring coatings will also be analyzed. To simulate scuffing mechanism between piston ring and cylinder liner, accelerated lab testing was performed. This study will provide the data from tribological testing of hard and soft piston ring coatings against cylinder liner. Furthermore, the microstructures and morphological features of the surface and the near-surface materials during wear will be investigated. From the scuffing test by using POD testing machine, scuffing mechanisms for the soft and hard coating will be analyzed and experimentally confirmed.
Keywords
Piston Ring; Cylinder Liner; Wear; Coating Layer; Pin-on-Disk(POD) Test; Scuffing;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
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