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http://dx.doi.org/10.15435/JILASSKR.2018.23.4.234

Characteristics of NOx and PN According to After-treatment for Light-duty Diesel Vehicles in WLTC Test Mode  

Lee, Dong In (한국교통대학교 자동차공학과)
Ko, Sangchul (국립환경과학원 교통환경연구소)
Yu, Young Soo (한국교통대학교 자동차공학과)
Park, Junhong (국립환경과학원 교통환경연구소)
Cha, Junepyo (한국교통대학교 자동차공학과)
Chon, Mun Soo (한국교통대학교 자동차공학과)
Publication Information
Journal of ILASS-Korea / v.23, no.4, 2018 , pp. 234-243 More about this Journal
Abstract
Since September 2017, a small diesel vehicle certification test mode has been enhanced from NEDC to WLTC. The main reason for the change of the certification test mode is that the certification test mode of the emission control standard of the diesel vehicle does not sufficiently reflect various driving patterns of the actual roads. Several automakers have developed after-treatment systems such as LNT, SCR, and DPF to meet enhanced emissions regulations. In this study, four small diesel cars were selected for sale in Korea, and the exhaust gas measurement test was performed in the WLTC mode, which reflects the driving characteristics of the actual roads. As a result of test, LNT vehicle exceeded Euro 6 NOx regulation and SCR vehicle satisfied Euro 6 NOx regulation. In addition, both LNT and SCR systems showed high NOX emission characteristics due to speed, RPA and Vxa. For the PN, all test vehicles were fitted with a DPF and met the Euro 6 PN regulations, with similar PN emissions results in LNT and SCR system.
Keywords
WLTC (Worldwide harmonized Light-duty vehicle Test Cycle); RPA (Relative Positive Acceleration); LNT (Lean NOx Trap); SCR (Selecttive Catalytic Reduction); DPF (Diesel Particle Filter);
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
연도 인용수 순위
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