In this study, a sound and vibration analysis of a marine diesel engine was conducted. The vibration and sound signals of the engine under various operating conditions were measured and analyzed by applying a spectrum analysis and an ordertracking analysis. In addition, a finite-element model of the engine was constructed via reverse engineering from a 3D scan. The main causes of engine vibration and noise were clarified and identified individually through the experiments and the engine model. Finally, the biodiesel-blended diesel fuel was used for the engine for comparing sound and vibration performance with the ultra-low sulfur diesel (ULSD). In mid to highrange speeds, the biodiesel-blended diesel fuel does reduce the engine exhaust noise and vibration amplitude caused by the constant engine combustion explosion.
Shaw, Jinsiang; Wang, Yun-Hong; and Lin, Cherng-Yuan
"SOUND AND VIBRATION ANALYSIS OF A MARINE DIESEL ENGINE VIA REVERSE ENGINEERING,"
Journal of Marine Science and Technology: Vol. 26
, Article 9.
Available at: https://jmstt.ntou.edu.tw/journal/vol26/iss5/9