연료분무 및 연소 1 : 연식에 따른 CNG 및 경유버스 오염물질 배출특성 비교 = Fuel Injection and Combustion 1 : Comparison of Emission Exhausted from CNG and Diesel Bus by Model Year

다국어 초록 (Multilingual Abstract)

CNG buses have been spread instead of diesel buses in Korea due to the clean exhaust gas emission expecially in terms of PM. But recently diesel engine technology has been improved dramatically and the emission regulation is also more stringent over the past ten years. Therefore the comparison study between CNG and Diesel Bus has been needed for the analysis of environmental effect on the CNG bus. In this study experimental comparison was performed on the CNG and diesel bus by model year. Chassis dynamometer test was performed for measurement of CO, HC, NOx, PM, PN, CO2 and fuel consumption. Test mode was used NIER 06 mode represented city bus driving conditon in Korea very well. From the mode test, CNG bus shows its advantage in terms of emission respectively compared to diesel bus in spite of stringent emission standard of diesel bus.