Investigation of factors affecting the gaseous and particulate matter emissions from diesel vehicles

被引:0
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作者
Bei Wang
Yik-Sze Lau
Yuhan Huang
Bruce Organ
Shun-Cheng Lee
Kin-Fai Ho
机构
[1] Technological and Higher Education Institute of Hong Kong,Faculty of Science and Technology
[2] The Chinese University of Hong Kong,School of Public Health and Primary Care
[3] University of Technology Sydney,Centre for Green Technology, School of Civil and Environmental Engineering
[4] Jockey Club Heavy Vehicle Emissions Testing and Research Centre,Department of Civil and Structural Engineering
[5] The Hong Kong Polytechnic University,undefined
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关键词
Diesel engine; Criteria air pollutants; Emission factor; Emission standard;
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摘要
This study presents a detailed investigation of diesel vehicle emissions utilizing chassis dynamometer testing. The recruited vehicle fleet consists of 15 in-use diesel vehicles, spanning a wide range of emission standards, engine sizes, weight, model year, etc. The real-time emission concentrations of nitrogen oxides (NOx), total hydrocarbons (THC), carbon monoxide (CO) and carbon dioxide (CO2), and the mass of particulate matter (PM) collected on filters are measured and used to calculate the vehicle emission factors (EFs) under various driving conditions. Results show that in general EFs of NOx, CO, THC, and PM of the recruited fleet span a wide range of values (NOx 0.80 ± 0.34 to 60.28 ± 2.94 g kg−1; THC 0.10 ± 0.04 to 5.28 ± 1.28 g kg−1; CO below detection limits to 24.01 ± 8.48 g kg−1; PM below detection limits to 2.47 ± 1.22 g kg−1). Further data analysis shows that the implementation of a higher emission standard has a significant effect on reducing the emission of pollutants, except for NOx. Driving conditions are also important factors affecting the EFs. Besides, statistical analysis shows a significant correlation between EFs of NOx with the testing weight and the maximum engine power of the vehicle. Further investigation is recommended to explore the effect of maintenance of the vehicles to the vehicular emission.
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页码:1113 / 1126
页数:13
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