직분사 디젤 엔진에서 1-옥탄올/경유 혼합 연료의 연소 및 배기 특성 연구

• Published in: 한국수소 및 신에너지학회 논문집 Vol. 34; no. 1; pp. 69 - 76
• Main Authors: 박철오(CHEOL-OH PARK), 양청현(JEONGHYEON YANG), 김범수(BEOMSOO KIM), 권재성(JAESUNG KWON)
• Format: Journal Article
• Language: Korean
• Published: 한국수소및신에너지학회 2023
• Subjects: Smoke opacity(스모크 불투명도); Diesel engine(디젤 엔진); NOx(질소산화물); 1-octanol(1-옥탄올); Brake specific fuel consumption(제동연료 소비율); 1
• ISSN: 1738-7264; 2288-7407
• DOI: 10.7316/KHNES.2023.34.1.69

An experimental study was conducted on a 4-stroke direct injection diesel engine to examine the combustion and emission characteristics of 1-octanol/diesel fuel blends. The concentration of 1-octanol in the fuel blends was 10%, 30%, and 50% by volume. Experiments were conducted by varying the engine torque from 6 Nm to 12 Nm at the same engine speed of 2,700 rpm. Results showed that the fuel conversion efficiency increased as the 1-octanol proportion increased under most experimental conditions. However, the brake specific fuel consumption increased due to the relatively low lower heating value of 1-octanol. The smoke opacity and the concentrations of NOx and CO emissions generally decreased with brake mean effective pressure as the 1-octanol proportion increased. On the other hand, the unburned hydrocarbon concentration increased with an ascending ratio of 1-octanol.