Real-world emission characteristics and driving factors of diesel trucks: Insights from plume chasing experiments

Jiahao Yang; Xiang Che; Jiani Tan; Xiaoliang Qin; Jiahao Duan; Dengguo Liu; Yusen Duan; Sheng Xiang; Nanchi Shen; Xi Zhai; Yi Zhang; Zhi Ning; Li Li

Atmospheric Environment: X (Jan 2025)

Real-world emission characteristics and driving factors of diesel trucks: Insights from plume chasing experiments

Jiahao Yang,
Xiang Che,
Jiani Tan,
Xiaoliang Qin,
Jiahao Duan,
Dengguo Liu,
Yusen Duan,
Sheng Xiang,
Nanchi Shen,
Xi Zhai,
Yi Zhang,
Zhi Ning,
Li Li

Affiliations

Jiahao Yang: School of Environmental and Chemical Engineering, Shanghai University, Shanghai, 200444, China
Xiang Che: Shanghai Environmental Monitoring Center, Shanghai, 200235, China
Jiani Tan: School of Environmental and Chemical Engineering, Shanghai University, Shanghai, 200444, China
Xiaoliang Qin: Division of Environment and Sustainability, The Hong Kong University of Science and Technology, Hong Kong, China
Jiahao Duan: Division of Environment and Sustainability, The Hong Kong University of Science and Technology, Hong Kong, China
Dengguo Liu: Shanghai Environmental Monitoring Center, Shanghai, 200235, China
Yusen Duan: Shanghai Environmental Monitoring Center, Shanghai, 200235, China; Shanghai Technology Center for Reduction of Pollution and Carbon Emissions, Shanghai, 200235, China; Corresponding author. Shanghai Environmental Monitoring Center, Shanghai, 200235, China.
Sheng Xiang: State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai, 200092, China
Nanchi Shen: School of Environmental and Chemical Engineering, Shanghai University, Shanghai, 200444, China
Xi Zhai: Shanghai Municipal Urban and Rural Construction and Transportation Development Institute, 200032, China
Yi Zhang: Shanghai Municipal Urban and Rural Construction and Transportation Development Institute, 200032, China
Zhi Ning: Division of Environment and Sustainability, The Hong Kong University of Science and Technology, Hong Kong, China
Li Li: School of Environmental and Chemical Engineering, Shanghai University, Shanghai, 200444, China; Corresponding author.

Journal volume & issue: Vol. 25
p. 100311

Abstract

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On-road transportation is gradually becoming one of the major source contributors to air pollutants and carbon emissions in China. In this study, a chasing experiment was conducted on 487 diesel trucks in Shanghai using a mobile plume chasing and analysis system to obtain the real-world emission characteristics of air pollutants and carbon dioxide (CO2). The average emission factors (EFs) of nitrogen oxide (NOx), fine particulate matter (PM2.5), volatile organic compounds (VOCs) and carbon monoxide (CO) of the measured vehicles are 22.8 ± 13.5, 0.38 ± 0.26, 5.6 ± 4.9, and 4.5 ± 4.0 g/kg fuel, respectively. The observed decrease in EFs of air pollutants from China IV to China VI suggests a potential correlation between stricter emission standards and reduced emissions in diesel truck fleets. Additionally, the EFs increase with the gross vehicle weights (GVW). The driving speed, registration year and wind direction were the main drivers of NOx EFs. The measured CO2 EFs is 3182.2 ± 5.8 g/kg fuel, showing little variations with emission standards and GVW, which is different from the abovementioned air pollutants. We found a significant negative correlation between the EFs of CO2 and NOx (p < 0.05), indicating that as NOx emissions decrease, CO2 emissions tend to increase. Therefore, we recommend integrating CO2 emission limits into new standards to achieve synergistic control of pollutants and greenhouse gases.

Published in Atmospheric Environment: X

ISSN: 2590-1621 (Online)
Publisher: Elsevier
Country of publisher: United Kingdom
LCC subjects: Technology: Environmental technology. Sanitary engineering: Environmental pollution; Science: Physics: Meteorology. Climatology
Website: https://www.journals.elsevier.com/atmospheric-environment-x

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