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http://dx.doi.org/10.9725/kstle.2007.23.4.170

Friction, Wear and Scuffing Life of Piston Rings With Several Coating for Low Friction Diesel Enging  

Ahn, Tae-Sik (Dept. of Mechanical Engineering, Sungkunkwan University)
Cho, Dae-Hyun (Dept. of Mechanical Engineering, Sungkunkwan University)
Oh, Chung-Soon (Dept. of Mechanical Engineering, Sungkunkwan University)
Lee, Young-Ze (Dept. of Mechanical Engineering, Sungkunkwan University)
Publication Information
Tribology and Lubricants / v.23, no.4, 2007 , pp. 170-174 More about this Journal
Abstract
Wear and scuffing tests were conducted using friction and wear measurement of piston rings and cylinder blocks in low friction diesel engine. The frictional forces, wear amounts and cycles to scuffing in boundary lubricated sliding condition were measured using the reciprocating wear tester. The cylinder blocks were used as reciprocating specimens, and the piston rings with several coatings were used as fixed pin. Several coatings were used such as DLC, TiN, Cr-ceramic and TiAlN in order to improve the tribological characteristics. From the tests wear volume of piston ring surfaces applied various coatings were compared. During the tests coefficients of friction were monitored. Test results showed that DLC coatings showed good tribological properties. TiN and Cr-ceramic coated rings showed good wear resistance properties but produced high friction.
Keywords
Wear; Friction; Piston ring; Cylinder block; Scuffing test; Coating;
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