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All Journal International Journal of Marine Engineering and Applications
Santosa , Ari Wibawa Budi
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Control & Systems Engineering Energy Engineering Mechanical Engineering Transportation

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EXPERIMENTAL INVESTIGATION OF WASTE COOKING OIL BIODIESEL UTILIZATION IN MARINE DIESEL ENGINES Yudo, Hartono; Gymnastiar, Wahyu; Santosa , Ari Wibawa Budi
IJMEA International Journal of Marine Engineering and Applications Vol 3 No 2 (2026): September 2026
Publisher : Department of Marine Engineering, Universitas Hang Tuah

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30649/ijmea.v3i2.405

Abstract

This study evaluates the technical and economic performance of waste cooking oil biodiesel blends (B30 and B50) in a Dongfeng 8 HP marine diesel engine commonly used by small-scale fishing vessels. Experimental tests were conducted under engine loads of 25%, 50%, 75%, and 100% to assess fuel consumption, brake specific fuel consumption (BSFC), engine power output, exhaust temperature, and operational fuel costs. The results showed that increasing biodiesel concentration led to higher BSFC values, reaching 0.516 kg/kWh for B30 and 0.619 kg/kWh for B50 at full load, compared with 0.390 kg/kWh for diesel fuel (B0). Engine power decreased from 5.15 kW for B0 to 4.36 kW and 4.12 kW for B30 and B50, respectively. However, biodiesel blends reduced operating costs to Rp50,963/h for B30 and Rp50,363/h for B50, compared with Rp54,270/h for diesel fuel. In addition, exhaust gas temperatures decreased with increasing biodiesel content. These findings demonstrate that waste cooking oil biodiesel can provide economic benefits while maintaining acceptable engine performance for small-scale fishing vessel applications.
Co-Authors Gymnastiar, Wahyu Hartono Yudo