2018 年 63 巻 6 号 p. 383-388
Referring some of the experimental and / or analytical studies conducted by late Dr. Yutaro WAKURI, an emeritus professor of Kyushu University, and his collaborators, the lubrication for the elements and lubricants of marine diesel engines have been reviewed to consider the design concepts for engines still important in the future. Some studies on lubrication problems have been reviewed orderly for the cylinder and piston ring system, the lubricating oil and the bearing system. In particular, concerning the piston rings, some design concepts have been considered referring the study results on the characteristics of abnormal or normal wear, the occurrence mechanisms and prevention measures for scuffing failure, the characteristics of oil-film behavior and / or oil consumption. Also regarding the bearings, some key points of design have been also considered referring the study results on the lubrication characteristics or the improvement of load-carrying capacity for crosshead-pin bearings.
