On-road emission measurements of reactive nitrogen compounds from heavy-duty diesel trucks in China

Environmental Pollution
Liqiang HeYe Wu

Abstract

Emissions of major reactive nitrogen compounds, including nitric oxide (NO), nitrogen dioxide (NO2) and ammonia (NH3), from heavy-duty diesel vehicles (HDDVs) place substantial pressure on air quality for many large cities in China. To control nitrogen oxide (NOX) emissions from HDDVs, selective catalytic reduction (SCR) systems have been widely used since the China IV standards. To investigate the impacts of aftertreatment technologies and driving conditions on real-world emissions of reactive nitrogen compounds, a portable emissions measurement system was employed to test eighteen heavy-duty diesel trucks in China. The results showed that the China IV and China V HDDVs with appropriate SCR functionality could reduce NOX emissions by 36% and 53%, respectively, compared to the China III results, although their real-world emissions were still higher than the corresponding emission limits for regulatory engine tests. For these HDDVs, five samples were tested with NH3 emissions, ranging from 1.67 ppm to 51.49 ppm. The NH3 emission rates tended to significantly increase under high-speed driving conditions. The results indicate that the current SCR technology may have certain risks in exceeding the future China VI NH3 limit. However...Continue Reading

References

Sep 1, 2015·Environmental Science & Technology·Gary A Bishop, Donald H Stedman
Sep 19, 2016·The Science of the Total Environment·Ye WuSvetlana Stevanovic
Nov 12, 2017·The Science of the Total Environment·Michal Vojtíšek-LomTomáš Voříšek
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Citations

Aug 25, 2020·Environment, Development and Sustainability·Biswajit BeraSoumik Saha
Jan 2, 2021·Environmental Pollution·Qijun ZhangHongjun Mao
Nov 2, 2020·The Science of the Total Environment·Md Siddiqur RahmanMir Md Mozammal Hoque
Jan 20, 2021·Environmental Pollution·Shihai ZhangYan Ding
Jan 26, 2021·Air Quality, Atmosphere, & Health·Salah Eddine SbaiFarida Bentayeb
Apr 14, 2020·Environmental Pollution·Frédéric DutheilValentin Navel
Mar 7, 2021·Environmental Pollution·Shaojun ZhangYe Wu
Mar 10, 2021·Environmental Science and Pollution Research International·Ana Carolina Rodrigues TeixeiraDominique Mouette
Apr 4, 2021·International Journal of Environmental Research and Public Health·Tuo Zhang, Maogang Tang
May 7, 2021·Environmental Research·Vasilis KazakosZhiwen Luo
Apr 26, 2020·The Science of the Total Environment·Sulaman MuhammadMuhammad Salman
Oct 28, 2021·Environmental Science & Technology·Napameth PhantawesakMarc E J Stettler
Nov 9, 2021·Environmental Science and Pollution Research International·Camille A RochaRivelino M Cavalcante

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