@article{oai:ir.kagoshima-u.ac.jp:00005033, author = {米盛, 亨}, issue = {1}, journal = {鹿児島大学水産学部紀要=Memoirs of Faculty of Fisheries Kagoshima University}, month = {2016-10-28}, note = {The M.A.N.-KZ type is one of large two-cycle marine diesel engines. In order to save the system oil in engines, it is important to reduce the leakage loss and to keep the oil in good quality as far as possible. Leakage tests and measurements of acid value, performed on the Hôsei Maru during her three voyages in 1960, gave the following results. 1) The mean total consumption was 130 l/day, and the rate of consumption as "piston rod scraped oil" was largest (Table 1, Table 2, Fig. 2). It should be collected carefully, and be returned into the system after a chemical treatment (Fig. 3). 2) Water and combustibles gave heavy injuries to the system oil. 3) A mass of exhaust gas leaking into the crank case through control valve bearings caused a severe deterioration to the system oil. For the purpose of intercepting exhaust gas, it seems useful to reinforce Labyrinth seals and apply a special grease to bearings (Fig. 1, ① ④). 4) Heavy duty oil is not suitable to this kind of engine, because it makes emulsion with water and gives fatal damages not only to the oil but also to the engine (Table 3).}, pages = {29--38}, title = {舶用ディーゼル機関の潤滑油管理 : 邦正丸主機のシステム油に関する二,三の知見}, volume = {12}, year = {} }