Gao, J, Chen, H orcid.org/0000-0003-0753-7735, Liu, Y orcid.org/0000-0002-9367-3532 et al. (1 more author) (2021) Impacts of De-NOₓ system layouts of a diesel passenger car on exhaust emission factors and monetary penalty. Energy Science and Engineering, 9 (12). pp. 2268-2280. ISSN 2050-0505
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.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2021 The Authors. Energy Science & Engineering published by Society of Chemical Industry and John Wiley & Sons Ltd. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited. |
Keywords: | after-treatment system layout; ammonia creation and conversion technology; damage costs; diesel passenger cars; emission factors; selective catalytic reduction |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Environment (Leeds) > Institute for Transport Studies (Leeds) > ITS: Spatial Modelling and Dynamics (Leeds) |
Funding Information: | Funder Grant number EU - European Union 815189 |
Depositing User: | Symplectic Publications |
Date Deposited: | 26 Oct 2021 15:24 |
Last Modified: | 25 Jun 2023 22:48 |
Status: | Published |
Publisher: | Wiley |
Identification Number: | 10.1002/ese3.1001 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:179627 |