선박용 중유 대체를 위한 바이오중유 혼합연료에 대한 실험적 연구: 배출가스 및 연료소모율 = An Experimental Study on Blended Bio-Fuel Oil as an Alternative to Marine Fuel Oil: Emissions and Fuel Consumption

다국어 초록 (Multilingual Abstract)

This study evaluated the potential use of blended biofuel oil (BFO) as an alternative to low-sulfur fuel oil (LSFO) for marine applications, focusing primarily on its emissions and fuel consumption characteristics. Experiments were conducted using a medium-speed four-stroke marine diesel engine (Tier II) operating on LSFO and blends containing 15% and 30% BFO by volume. The results showed that PM emissions decreased with increasing BFO content due to the oxygen-rich nature of biofuels, which enhances combustion efficiency. However, NOx emissions increased slightly. This was probably due to the higher fuel density and oxygen content, which increased the combustion temperature and reduced the atomization quality. Increasing the BFO ratio increased the brake-specific fuel consumption because the heating value decreased. Overall, the blended BFOs showed favorable PM reduction performance compared to LSFO, which confirmed their potential as environmentally friendly marine fuels. However, the increases in NOx and fuel consumption highlight the need for further optimization and engine-specific evaluations.