A study on the structural vibration of the main engine of a fishing boat
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Structural vibrations significantly affect the reliability, efficiency, and safety of engines. Excessive vibrations pose a threat to component integrity, accelerating wear on essential parts such as pistons and crankshafts. Accordingly, controlling structural vibra-tions is imperative for enhancing engine efficiency by minimizing energy losses and optimizing fuel consumption. This study examines the structural vibration of a 588 kW 4-stroke diesel engine installed on a tonnage fishing boat. Analysis revealed a natural vibration frequency of approximately 118 Hz, resulting in resonance at 1700–1800 rpm by the 4th order. The vibration level exceeded the ac-ceptable criteria. A novel solution for installing additional reinforcing bars to secure the engine to the walls and floor of the engine room is suggested to improve the vibration behavior of the main engine.
Abstract
Structural vibrations significantly affect the reliability, efficiency, and safety of engines. Excessive vibrations pose a threat to component integrity, accelerating wear on essential parts such as pistons and crankshafts. Accordingly, controlling structural vibra-tions is imperative for enhancing engine efficiency by minimizing energy losses and optimizing fuel consumption. This study examines the structural vibration of a 588 kW 4-stroke diesel engine installed on a tonnage fishing boat. Analysis revealed a natural vibration frequency of approximately 118 Hz, resulting in resonance at 1700–1800 rpm by the 4th order. The vibration level exceeded the ac-ceptable criteria. A novel solution for installing additional reinforcing bars to secure the engine to the walls and floor of the engine room is suggested to improve the vibration behavior of the main engine.
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