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Published in:
2023 | OriginalPaper | Chapter
Low Temperature PEMS Emission Control Study of Commercial Vehicles
Authors : Dalu Dong, Qi Yu, Yi Zhang, Hongming Tian, Zhen Wang, Yupeng Wang
Published in: Proceedings of China SAE Congress 2021: Selected Papers
Publisher: Springer Nature Singapore
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Abstract
In this paper, we studied the N3 commercial vehicles meet the China VI b standard. When vehicle at −7 ℃ low-temperature and light-load PEMS test, the engine of China VI a cannot achieve the China VI b standard requirements. The N3 vehicles can meet the China VI b standard by improving engine exhaust heat management and optimizing original emission in engine. Optimal exhaust temperature management can increase the engine WHTC exhaust average temperature by 25 ℃, the NOx emission decrease by 30% in part load, by the way the N3 class vehicle can achieve China VI b standard. Engine exhaust thermal management and EGR technology will be important for future emission regulatory requirements.