Wear Characteristics of Cylinder-Liner Materials for Diesel Engine at Elevated Temperature

Title & Authors
Wear Characteristics of Cylinder-Liner Materials for Diesel Engine at Elevated Temperature
Kim, Jin-Yeol; Kim, Jae-Hoon; Oh, Kwang-Keun; Lee, Seung-Hak; Chang, Joon-Yong;

Abstract
In a diesel engine, the wear of the cylinder liner occurs because of the continuous reciprocating motion of the piston ring. This wear reduces the performance of the diesel engine and shortens its service life. This study evaluated the wear characteristics of GT metal and a conventional metal used for cylinder liners using a ship's diesel engine. Wear tests were performed at temperatures of $\small{25^{\circ}C}$, $\small{175^{\circ}C}$, and $\small{325^{\circ}C}$, and under loads of 10 N, 30 N, and 50 N. The amount of wear, specific wear rate, and friction coefficient were evaluated for each condition. To analyze the wear mechanism, observations were made on an SEM. In the case of both metals, abrasive and adhesion wear occurred on the wear surfaces at room temperature, and corrosion wear was observed at high temperatures. The amount of wear and the specific wear rate of the GT metal were lower than those of the conventional metal at all temperatures, and hence it can be concluded that the wear characteristics of the GT metal are much better.
Keywords
Cylinder Liner;Friction Coefficient;Specific Wear Rate;Wear;
Language
Korean
Cited by
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