Emission Measurements on a Large Sample of Heavy-Duty Diesel Trucks in China by Using Mobile Plume Chasing

• DOI: 10.1021/acs.est.3c03028
• Publication Date: 2023-09-26T10:07:13Z
• Authors: Hui Wang; Shaojun Zhang; Xiaomeng Wu; Yifan Wen; Zhenhua Li; Ye Wu
• Keywords: Air Pollutants; China; Motor Vehicles; Soot; 13. Climate action; Nitrogen Oxides; 7. Clean energy; Gasoline; Vehicle Emissions; Environmental Monitoring

Real-world heavy-duty diesel trucks (HDTs) were found to emit far more excess nitrogen oxides (NOX) and black carbon (BC) pollutants than regulation limits. It is essential systematically evaluate on-road NOX BC emission levels for mitigating HDT emissions. This study launched 2109 plume chasing campaigns emissions of HDTs across several regions in China from 2017 2020. was that had limited reductions III V, while exhibited high with stricter standard implementation. paper showed previous studies underestimated 18% 2019 nearly half the real-world (determined by updating trends HDTs) exceeded Furthermore, ambient temperature identified as a primary driver HDTs, low-temperature penalty has caused 9-29% increase winter major China. These results would provide important data support precise control HDTs.