As the performance level of marine diesel engines has been raised higher year after year, the sliding conditions between the cylinder liner and the piston ring have become increasingly severer. For medium speed diesel engines, a cast iron cylinder liner and a chromium-plated piston ring form the most commonly used combination, and there is a pressing need to find the optimal surface treatment method that will provide a high resistance to scuffing. The authors measured the scuffing resistance of various surface treatment materials by carrying out a load increase test using a pin-on-disk tester, and it was found that the combination of a Fe-Mo sprayed coating on the cylinder liner and the chromium plating on the piston ring had the greatest resistance to scuffing. The authors measured the coating characteristics of the Fe-Mo sprayed coating, and the results indicated that its practical application is feasible. Such a coating was applied to an actual cylinder liner and a scuffing characteristics evaluation test using an actual engine was carried out. The results indicated that this coating has far greater scuffing resistance than the conventional material.
Development of surface treatments for marine diesel engine cylinder liner
Entwicklung von Oberflächenbehandlungen für die Zylinderbuchsen von Schiffsdieselmotoren
2004
9 Seiten, 13 Bilder, 5 Tabellen, 6 Quellen
Conference paper
Storage medium
English
Development of surface treatments for marine diesel engine cylinder liner
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