차대 동력계에서 주행모드에 따른 모사 합성가솔린의 배출 특성 분석 = Analysis of Exhaust Emission Characteristics of Surrogate e-Gasoline under Various Driving Modes

다국어 초록 (Multilingual Abstract)

The objective of this study is to investigate the exhaust emission characteristics of surrogate e-gasoline fuels reflecting Fischer–Tropsch synthetic fuel properties under real vehicle and chassis dynamometer conditions. Three surrogate e-gasoline blends were formulated and compared with conventional gasoline using four standard driving cycles (FTP-75, HWFET, SC03, and US06). Regulated emissions (CO2, NOₓ, THC, and CO) and unregulated pollutants, including volatile organic compounds (VOCs) and carbonyl compounds, were simultaneously evaluated. The results show that surrogate e-gasoline fuels produce higher THC and CO emissions during cold-start conditions due to delayed fuel vaporization associated with lower vapor pressure. However, under stabilized and high-temperature operating conditions, improved combustion stability—particularly for fuels with a higher iso-paraffin content—leads to reduced THC and CO emissions compared to gasoline. Fuels containing MTBE exhibit a slight increase in NOx owing to elevated combustion temperatures, while overall CO2 emissions are reduced by approximately 3% as a result of higher heating value. In addition, the removal of aromatic hydrocarbons effectively suppresses hazardous VOC emissions such as benzene and toluene.