Shinagawa Etchujima CampusGraduate School of Marine Science and Technology

The Graduate School of Marine Science and Technology has a doctoral course divided into a master's course and a doctoral course, and trains independent highly specialized professionals who open up cutting-edge fields.Furthermore, in collaboration with the Japan Fisheries Research and Education Agency, the Japan Agency for Marine-Earth Science and Technology, and the National Institute of Maritime, Port and Aviation Technology, we will further enhance education and research and improve the quality of graduate students. We are trying to

[Awards and Commendations] Shinya Yamada (2nd year master's student) received the Academic Lecture Outstanding Presentation Award at the 95th Marine Engineering Academic Conference.

2025.11.04 Graduate School of Marine Science and Technology Companies / researchers Current students

202510Month27Sun ~29The Japan Institute of Marine Engineering held the 1st95At the Marine Engineering Academic Conference, our graduate student, Shinya Yamada, won the Academic Conference Outstanding Presentation Award.35This award is given to speakers aged 10 or younger.42There were target lectures,3The presentation was awarded the Outstanding Presentation Award.

【Winner】
Shinya Yamada (Master's student, Department of Marine Systems Engineering, Graduate School of Marine Science and Technology)2Year)

[Title of award-winning research]
Measuring the operating conditions of marine diesel engines using vibration sensors - Effect of changes in fuel injector opening pressure setting on fuel injection vibration

[Details of award-winning research]
When a malfunction occurs in a fuel injector in a marine diesel engine, the combustion state deteriorates, causing various problems. However, the currently commonly used methods for detecting malfunctions in fuel injectors are difficult to distinguish, and issues remain. Therefore, we have been conducting research with the aim of developing a simple method for detecting the operating state and malfunction of fuel injectors, focusing on the vibrations that occur during fuel injection.

In this presentation, we measured and analyzed fuel injection vibration when there was a change in the valve opening pressure value during fuel injection (when a malfunction occurred in the fuel injection valve). The analysis results confirmed that changes in valve opening pressure cause differences in the timing of fuel injection vibration occurrence, and that vibration measurement can identify malfunctions in the fuel injection valve. It is believed that this measurement method can be used to detect fuel injection malfunctions or early signs of malfunctions while the engine is running.