Developing On-Road NOx Emission Factors for Euro 6b Light-Duty Diesel Trucks in Korean Driving Conditions

Seungcheon Ro, Junhong Park, Myunghwan Shin and Jongtae Lee
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Seungcheon Ro: National Institute of Environmental Research (NIER), 42 Hwangyeong Road, Seo, Incheon 22689, Korea
Junhong Park: National Institute of Environmental Research (NIER), 42 Hwangyeong Road, Seo, Incheon 22689, Korea
Myunghwan Shin: National Institute of Environmental Research (NIER), 42 Hwangyeong Road, Seo, Incheon 22689, Korea
Jongtae Lee: National Institute of Environmental Research (NIER), 42 Hwangyeong Road, Seo, Incheon 22689, Korea

Energies, 2021, vol. 14, issue 4, 1-13

Abstract: This study aimed to develop on-road NOx emission factors for Euro 6b light-duty diesel trucks (LDDTs) in Korea. On-road NOx emissions were measured using portable emissions measurement systems and compared with those measured using the Korean Driving Cycle (KDC), the conventional laboratory test used to develop emission factors. To ensure the representativeness of the LDDTs emission factors, five vehicles of three models were driven along two real driving routes for total traveled mileage of 2280 km. On-road NOx levels were 2.1 to 6.9 times higher on average than those measured using the KDC because the latter does not cover the wide variability in vehicle speed and relative positive acceleration, common in real driving conditions. The lean-NOx trap was found to have disappointingly low NOx reduction efficiency in on-road driving. The on-road NOx emission factors by vehicle speeds developed in this study were comparable to the COPERT 4 factors.

Keywords: Euro 6b; Real Driving Emissions (RDE); emission factor; light-duty diesel truck; nitrogen oxide (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2021
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (4)

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