Impacts of De‐NOx system layouts of a diesel passenger car on exhaust emission factors and monetary penalty

Abstract Automobile emissions are significantly dependent on the after‐treatment system performance, which is partly determined by exhaust temperature. Regarding diesel passenger cars, after‐treatment systems generally include diesel oxidation catalyst (DOC), diesel particulate filter (DPF), and sel...

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Autores principales:	Jianbing Gao, Haibo Chen, Ye Liu, Ying Li
Formato:	article
Lenguaje:	EN
Publicado:	Wiley 2021
Materias:	after‐treatment system layout ammonia creation and conversion technology damage costs diesel passenger cars emission factors selective catalytic reduction Technology T Science Q
Acceso en línea:	https://doaj.org/article/3e27e8b40c7747a3a7f55e00b9d4dda5
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spelling	oai:doaj.org-article:3e27e8b40c7747a3a7f55e00b9d4dda52021-12-02T05:24:30ZImpacts of De‐NOx system layouts of a diesel passenger car on exhaust emission factors and monetary penalty2050-050510.1002/ese3.1001https://doaj.org/article/3e27e8b40c7747a3a7f55e00b9d4dda52021-12-01T00:00:00Zhttps://doi.org/10.1002/ese3.1001https://doaj.org/toc/2050-0505Abstract Automobile emissions are significantly dependent on the after‐treatment system performance, which is partly determined by exhaust temperature. Regarding diesel passenger cars, after‐treatment systems generally include diesel oxidation catalyst (DOC), diesel particulate filter (DPF), and selective catalytic reduction (SCR). The layouts affect their temperature variations because of the heat loss and thermal capacity of tailpipes and after‐treatment systems. As for the original layout of DOC+DPF+SCR, nitrogen oxides (NOx) emissions are the main concerns of diesel vehicle emissions, especially under cold‐start conditions. Ammonia Creation and Conversion Technology (ACCT) system shows excellent performance of reducing cold‐start NOx emissions; additionally, the damage costs of individual exhaust emissions are different greatly, which may change the priority of emission reductions when considering monetary penalty. In this article, the impacts of the after‐treatment system layouts on the exhaust emission reductions were investigated based on a diesel passenger car; additionally, SCR and ACCT systems as the De‐NOx devices were adopted individually in corresponding scenarios; the after‐treatment system layouts were assessed from the viewpoints of both emission factors and monetary penalty. The results indicated that the ACCT system presented much better NOx reduction effectiveness than SCR system over different layouts. NOx reduction efficiency was very sensitive to vehicle operation conditions over the upstream layouts of NOx reduction devices. The layout‐1 of DOC+ACCT+DPF showed the lowest global emission factors from the diesel passenger car. DPF was much easier to achieve regeneration under the original layout conditions due to its shortest distance to the engine. The layout‐2 of ACCT+DOC+DPF had the minimum monetary penalty factor of exhaust emissions from this diesel passenger car.Jianbing GaoHaibo ChenYe LiuYing LiWileyarticleafter‐treatment system layoutammonia creation and conversion technologydamage costsdiesel passenger carsemission factorsselective catalytic reductionTechnologyTScienceQENEnergy Science & Engineering, Vol 9, Iss 12, Pp 2268-2280 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	after‐treatment system layout ammonia creation and conversion technology damage costs diesel passenger cars emission factors selective catalytic reduction Technology T Science Q
spellingShingle	after‐treatment system layout ammonia creation and conversion technology damage costs diesel passenger cars emission factors selective catalytic reduction Technology T Science Q Jianbing Gao Haibo Chen Ye Liu Ying Li Impacts of De‐NOx system layouts of a diesel passenger car on exhaust emission factors and monetary penalty
description	Abstract Automobile emissions are significantly dependent on the after‐treatment system performance, which is partly determined by exhaust temperature. Regarding diesel passenger cars, after‐treatment systems generally include diesel oxidation catalyst (DOC), diesel particulate filter (DPF), and selective catalytic reduction (SCR). The layouts affect their temperature variations because of the heat loss and thermal capacity of tailpipes and after‐treatment systems. As for the original layout of DOC+DPF+SCR, nitrogen oxides (NOx) emissions are the main concerns of diesel vehicle emissions, especially under cold‐start conditions. Ammonia Creation and Conversion Technology (ACCT) system shows excellent performance of reducing cold‐start NOx emissions; additionally, the damage costs of individual exhaust emissions are different greatly, which may change the priority of emission reductions when considering monetary penalty. In this article, the impacts of the after‐treatment system layouts on the exhaust emission reductions were investigated based on a diesel passenger car; additionally, SCR and ACCT systems as the De‐NOx devices were adopted individually in corresponding scenarios; the after‐treatment system layouts were assessed from the viewpoints of both emission factors and monetary penalty. The results indicated that the ACCT system presented much better NOx reduction effectiveness than SCR system over different layouts. NOx reduction efficiency was very sensitive to vehicle operation conditions over the upstream layouts of NOx reduction devices. The layout‐1 of DOC+ACCT+DPF showed the lowest global emission factors from the diesel passenger car. DPF was much easier to achieve regeneration under the original layout conditions due to its shortest distance to the engine. The layout‐2 of ACCT+DOC+DPF had the minimum monetary penalty factor of exhaust emissions from this diesel passenger car.
format	article
author	Jianbing Gao Haibo Chen Ye Liu Ying Li
author_facet	Jianbing Gao Haibo Chen Ye Liu Ying Li
author_sort	Jianbing Gao
title	Impacts of De‐NOx system layouts of a diesel passenger car on exhaust emission factors and monetary penalty
title_short	Impacts of De‐NOx system layouts of a diesel passenger car on exhaust emission factors and monetary penalty
title_full	Impacts of De‐NOx system layouts of a diesel passenger car on exhaust emission factors and monetary penalty
title_fullStr	Impacts of De‐NOx system layouts of a diesel passenger car on exhaust emission factors and monetary penalty
title_full_unstemmed	Impacts of De‐NOx system layouts of a diesel passenger car on exhaust emission factors and monetary penalty
title_sort	impacts of de‐nox system layouts of a diesel passenger car on exhaust emission factors and monetary penalty
publisher	Wiley
publishDate	2021
url	https://doaj.org/article/3e27e8b40c7747a3a7f55e00b9d4dda5
work_keys_str_mv	AT jianbinggao impactsofdenoxsystemlayoutsofadieselpassengercaronexhaustemissionfactorsandmonetarypenalty AT haibochen impactsofdenoxsystemlayoutsofadieselpassengercaronexhaustemissionfactorsandmonetarypenalty AT yeliu impactsofdenoxsystemlayoutsofadieselpassengercaronexhaustemissionfactorsandmonetarypenalty AT yingli impactsofdenoxsystemlayoutsofadieselpassengercaronexhaustemissionfactorsandmonetarypenalty
_version_	1718400404677459968

Impacts of De‐NOx system layouts of a diesel passenger car on exhaust emission factors and monetary penalty

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