SCR 및 LNT가 적용된 Euro-6 소형 경유차의 실제도로 주행과 인증모드에서의 CO₂ 및 NO_x 배출특성의 비교 = Characteristics of Real-Driving CO₂ and NO_x Emissions Compared to Test Modes on Euro-6 LDVs Equipped with SCR and LNT

다국어 초록 (Multilingual Abstract)

Recently, the certification procedure for exhaust emission regulation of LDV has tested with the NEDC mode in the laboratory. But the on-road exhaust emissions exceed the standard emission limits. Therefore, it is important to analyze the realdriving emissions (RDE) with a portable emissions measurement system (PEMS). In present study, the on-road emissions were measured with a PEMS and evaluated by moving averaging window (MAW) method. Also, it was compared with the CO2 and NOx emissions for real-driving and test modes from euro-6 light-duty vehicles equipped with SCR and LNT systems. In results, on-road NO_x emission has been 2.3-10.0 times higher than the standard NO_x emission limit on NEDC mode. The reason was that the test modes did not reflect traffic and various real-driving patterns sufficiently.