S6S in conditions with and without a turbocharger based on actual operational data. This study is motivated by the importance of understanding the performance of marine diesel engines in supporting operational efficiency, fuel economy, and the reliability of ship machinery systems. The methods used in this study included collecting engine operational data, such as engine speed, power output, fuel consumption, and engine operating conditions in both configurations. The data obtained were then analyzed comparatively to determine the effect of turbocharger use on engine performance. The analysis results indicate that the use of a turbocharger in an S6S marine diesel engine can increase power output and combustion efficiency, as well as reduce specific fuel consumption compared to the unturbocharged condition. Conversely, the unturbocharged engine demonstrated lower performance at certain workloads, making it less optimal for ship operations. Through this research outreach activity, it is hoped that participants will gain a better understanding of the role of turbochargers in improving marine diesel engine performance. The results of this study can serve as a reference for students, technicians, and marine machinery practitioners in efforts to optimize the operation and maintenance of marine diesel engines.
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