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International Journal of Automotive Technology > Volume 24(3); 2023 > Article
International Journal of Automotive Technology 2023;24(3): 749-758.
doi: https://doi.org/10.1007/s12239-023-0062-1
SUITABILITY OF SEMS EQUIPMENT FOR MONITORING RDE TESTS
Jun Woo Jeong 1, Junepyo Cha 2, Mun Soo Chon 2, Kihyung Lee 1
1Department of Mechanical Engineering, BK21 FOUR ERICA-ACE Center, Hanyang University
2Department of Automotive Engineering, Korea National University of Transportation
PDF Links Corresponding Author.  Kihyung Lee  , Email. hylee@hanyang.ac.kr
ABSTRACT
A portable emission measurement system (PEMS) is expensive and involves complex experimental processes for performing real driving emission (RDE) tests. An appropriate sensor-based emission measurement system (SEMS) must be developed to conduct the RDE test because SEMS has inexpensive and simple. To analyze the correlation between PEMS and SEMS, they are installed on six diesel vehicles, and a RDE test is performed on them. The applicability of the SEMS to the RDE test is estimated by comparing and analyzing real driving NOx emissions obtained from both the PEMS and SEMS. The results of laboratory and RDE tests confirm that the SEMS is applicable to RDE tests. Various correlation tests between the PEMS and SEMS show that the latter can be effectively applied to RDE tests; however, the NOx sensing limit must be improved.
Key Words: Worldwide harmonized light-duty vehicle test cycle (WLTC), Real driving emissions (RDE), Portable emissions measurement system (PEMS), Smart emissions measurement system (SEMS), Nitrogen oxides (NOx)
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