커먼레일 디젤기관에서 바이오디젤 연료와 연료분사 압력이 연소 및 배기특성에 미치는 영향
Effect of Biodiesel Fuel and Fuel Injection Pressure on Combustion and Emission Characteristics in a Common Rail Diesel Engine
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In this study, the effects of fuel injection pressure changed from 45 to 65 MPa on combustion and emission characteristics were investigated in a common rail direct injection (CRDI) diesel engine fueled with diesel and palm oil biodiesel blends. The engine speed and engine load were controlled at constant 1700rpm and 100Nm, respectively. The tested fuel were PBD20 (20 vol.% palm oil biodiesel blended with 80 vol.% diesel fuel). The main and pilot injection timing was fixed at 3.5°CA BTDC and 27°CA BTDC (before top dead center), respectively. The experimental results show that the combustion pressure and heat release rate increased. In addition, the indicated mean effective pressure (IMEP) and maximum combustion pressure increased with an increase of the fuel injection pressure. Hydrocarbon (HC), smoke opacity and carbon monoxide (CO) decreased, but oxides of nitrogen (NOx) emissions increased as fuel injection pressure increased.
Abstract
In this study, the effects of fuel injection pressure changed from 45 to 65 MPa on combustion and emission characteristics were investigated in a common rail direct injection (CRDI) diesel engine fueled with diesel and palm oil biodiesel blends. The engine speed and engine load were controlled at constant 1700rpm and 100Nm, respectively. The tested fuel were PBD20 (20 vol.% palm oil biodiesel blended with 80 vol.% diesel fuel). The main and pilot injection timing was fixed at 3.5°CA BTDC and 27°CA BTDC (before top dead center), respectively. The experimental results show that the combustion pressure and heat release rate increased. In addition, the indicated mean effective pressure (IMEP) and maximum combustion pressure increased with an increase of the fuel injection pressure. Hydrocarbon (HC), smoke opacity and carbon monoxide (CO) decreased, but oxides of nitrogen (NOx) emissions increased as fuel injection pressure increased.
참고문헌 (6)
- Sam Ki Yoon, "Influence of Fuel Injection Pressure on the Emissions Characteristics and Engine Performance in a CRDI Diesel Engine Fueled with Palm Biodiesel Blends", Energies (2019)
- 최승훈, "커먼레일 방식 디젤기관에서 바이오디젤 적용 연구", 한국기계기술학회지, 23(2), pp.162~166 (2021), 한국기계기술학회[DOI]
- 최승훈, "EGR과 바이오디젤의 커먼레일 방식 디젤기관 적용 연구", 한국기계기술학회지, 23(2), pp.266~270 (2021), 한국기계기술학회[DOI]
- LIU, Guoyou, "Recent advances and trend of HEV", EV‐oriented power semiconductors–an overview, 2020, pp.13(3), 394~404
- KIM, Ho Young, "Effects of Fuel Injection Pressure on Combustion and Emission Characteristics under Low Speed Conditions in a Diesel Engine Fueled with Palm Oil Biodiesel", Energies, 12(17), pp.3264~ (2019)
- Yesilyurt, M.K., "The effects of the fuel injection pressure on the performance and emission characteristics ofa diesel engine fuelled with waste cooking oil biodiesel-diesel blends", Renew. Energy, 132, pp.649~666 (2019)