舶用エンジンの潤滑に関する研究の回顧: 和栗先生の研究業績等を参考に

摘要

本特集の編集委員会の要請で，先に亡くなられ た和栗雄太郎先生の内燃機関に関する数々の研究 の中から「舶用機関の潤滑問題」に関する業績等 を回想する記事を掲載することになった.その執 筆を，内燃機関に特異な諸問題の本質やそれらの解決のための研究のあり方について40年以上に わたり教えを受けた者の一人である著者に託された.%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.