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http://dx.doi.org/10.7467/KSAE.2015.23.1.130

Characteristics of Real-road Driving NOx Emissions from Korean Light-duty Vehicles regarding Driving Routes  

Oak, Seonil (Department of Energy System Engineering, Korea National University of Transportation)
Eom, Myoungdo (Transportation Pollution Research Center, National Institute of Environmental Research)
Lee, Jongtae (Transportation Pollution Research Center, National Institute of Environmental Research)
Park, Junhong (Transportation Pollution Research Center, National Institute of Environmental Research)
Kim, Jichul (Department of Energy System Engineering, Korea National University of Transportation)
Chon, Mun Soo (Department of Energy System Engineering, Korea National University of Transportation)
Publication Information
Transactions of the Korean Society of Automotive Engineers / v.23, no.1, 2015 , pp. 130-138 More about this Journal
Abstract
Despite of recently strengthened vehicle emission regulations, NOx emissions are not decreased in urban areas because of discrepancies between certification emission test modes and real driving conditions. Thus, researches on RDE-LDV (Real-driving Emission-Light-duty Vehicle) have been conducted actively using PEMS (Portable Emissions Measurement Systems). In the present study, NOx emissions were measured for 5 Korean light duty vehicles for real driving conditions including city, combined, highway, and up-downhill test route. Emission characteristics were analyzed for averaged NOx emissions per unit driving distance of each driving test routes. Furthermore, MAW (Moving Average Window) method based on $CO_2$ emissions from WLTC, which will be supported for EU regulations, was utilized. It was revealed that DRs (deviation ratios) for diesel vehicles (i.e., 5.1 ~ 8.4) were greater than gasoline vehicles (less than 0.15). Especially DR of diesel vehicle for up-downhill test route was 8.4, which indicates severe NOx emissions.
Keywords
Emission regulations; RDE-LDV; PEMS; Deviation ratios;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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