著者

藤原 修平

出版者

小学館

雑誌

Sapio = サピオ

巻号頁・発行日

vol.26, no.8, pp.20-22, 2014-08

著者

水原 修平 国光 求 別府 治 高橋 元幸 坂根 篤 田中 正紀

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.33, no.12, pp.868-877, 1998-12-01 (Released:2010-05-31)

参考文献数

3

被引用文献数

1

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The world's first ADD30V medium speed diesel engines were produced and delivered for marine and stationary applications by Mitsui Engineering & Shipbuilding Co., Ltd. under the license of ADD Inc., Japan.This engine achieves extremely high power with B.M.E.P up to 2.7MPa and mean piston speed up to 12m/s, coupled with light weight and space saving compactness. In addition, high reliability as well as low fuel oil consumption is obtained.This paper describes the design features of principal components, such as the welded integral engine frame of steel modules, the crankshaft with cold-rolled fillets coupled with induction hardening, the piston of diffusion-bonded integral, the cylinder liner and the piston rings coated with wear-resistant ceramic, the singlevalve gas exchanging system, etc., which enable the ADD30V engine to achieve the above advantages under the extremely high power.Finally, the engine performance and the operating results are described on the basis of actual test results.

著者

原 修平 高橋 徹 渡部 綾一 玉木 志穂 佐藤 那由多 高岸 治人

雑誌

玉川大学脳科学研究所紀要 (ISSN:18827160)

巻号頁・発行日

no.13, pp.13-17, 2020-03-11

著者

吉武 裕 安部 晃 村上 心 梶原 修平 古川 隼人 坂本 竜二郎

出版者

一般社団法人 日本機械学会

雑誌

日本機械学会論文集 (ISSN:21879761)

巻号頁・発行日

vol.83, no.854, pp.17-00164-17-00164, 2017 (Released:2017-10-25)

参考文献数

9

被引用文献数

1

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This paper deals with the vibration quenching problem of the one-degree-of-freedom system with a limited power supply. This system is forced by centrifugal force of rotating unbalance, and the system is quenched using a Hula-Hoop and a motor to assist the rotation of Hula-Hoop. The entrainment region, the amount of vibration quenching, and the energy consumptions of the system are studied from the approximate analysis using the averaging method, the numerical integration analysis, and the experiment. Following was made clear: (1) When the unbalance is large, the entrainment region of the voltage of the assistant motor is large. On the other hand, when the unbalance is small, the entrainment region becomes narrow. (2) When the unbalance is large, by setting the voltage of the assist motor to a value smaller than the optimum value for vibration control, within the range that satisfies the allowable vibration amplitude level, the increase amount of the energy consumption becomes low. (3) The approximate solutions obtained by the averaging method are in good agreement with those obtained by the numerical integration method, and the characteristics of these results coincide with those of the results obtained by experiment.