Data evaluation methods for real driving emissions using portable emissions measurement system(PEMS)

Seokjoo Kwon, Sangil Kwon, Jongtae Lee, Seonil Oak, Youngho Seo, Sungwook Park, Mun Soo Chon

Research output: Contribution to journalArticle

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Recently, an emission test procedure using a portable emissions measurement system(PEMS) has received much attention as an effective means of controlling real driving emissions from light-duty diesel vehicles. The PEMS-based test procedure will be implemented from 2017 in Europe and Korea as a complementary test procedure for certification and regulation. In the present study, on-road NOx emissions were measured for four kinds of Euro 5 Korean light-duty diesel vehicles under real driving conditions, including urban, rural, and motorway test routes. The real driving emission characteristics were evaluated using both a moving averaging window(MAW) and the weighted emission method(WEM). The evaluated NOx emission results (under real driving conditions) from the MAW and WEM showed similar tendencies for the test vehicles and routes, while exceeding the certification emission limit by 1.8∼8.5 and 2.0∼10.6 times, respectively.

Original languageEnglish
Pages (from-to)965-973
Number of pages9
JournalTransactions of the Korean Society of Mechanical Engineers, B
Issue number12
Publication statusPublished - 2015 Dec

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