著者
日本舶用機関学会軸系研究委員会
出版者
公益社団法人 日本マリンエンジニアリング学会
雑誌
日本舶用機関学会誌 (ISSN:03883051)
巻号頁・発行日
vol.23, no.8, pp.500-507, 1988-08-01 (Released:2010-05-31)
参考文献数
10
被引用文献数
1 1

Allowable minimum revolution of shafting relating to oil film generation on stern tube bearing is described in this paper.
著者
小松 源一 河合 彊 神吉 義明
出版者
公益社団法人 日本マリンエンジニアリング学会
雑誌
日本舶用機関学会誌 (ISSN:03883051)
巻号頁・発行日
vol.16, no.6, pp.508-514, 1981 (Released:2010-05-31)
参考文献数
7

In the marine Diesel engine, there still remains problems about the relation between thermal loads of engines and the indicated values of thermometer. Therefore, the exact measurement of exhaust gas temperature has expected up to the present. The indicated value is mainly affected by two factors which are the measurement factors of exhaust gas temperature and the gas flow in the exhaust pipe, and it is still not clear how these two factors affect the indicated value.In this study the measurement factors affecting on the indicated value were examined, using two kinds of steady state exhaust gases in the duct and the thermometer well which was filled several thermocouples up the axial surface. Owing to the results, the temperature of the tip of well usually is different from gas temperature, even if the longitudinal length of well takes enough. Therefore, it seems that it is not suitable to make the reading gas temperature, the correcting of the reading is necessary to take account thermal characteristics of well in the duct.
著者
曽禰 正夫
出版者
The Japan Institute of Marine Engineering
雑誌
日本舶用機関学会誌 (ISSN:03883051)
巻号頁・発行日
vol.16, no.2, pp.121-130, 1981
被引用文献数
1

To find out an optimum cycle of the ship bottom sweeping from the standpoint of service economics, an accurate increase in delivered horsepower due to the ship's bottom fouling was grasped and a statistical analysis was made referring to the deck logbook and the engineer's logbook in parallel with speed tests with actual vessels.<BR>Some findings are as follows: (1) Values measured in speed tests before and after docking under conditions of 6200 tonne dwt and a given speed revealed that the annual increase in delivered horsepower due to the ship bottom fouling would be about 1000PS. (2) Variations in a decade, taking the initial service as the original point, both in delivered horsepower and in fuel consumption was at between about 10 and 15% increase.