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

Abstract

This is an open access article under the terms of the Creat ive Commo ns Attri bution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.

Diesel particulate filter regeneration mechanism of modern automobile engines and methods of reducing PM emissions: a review

“…Although the better SCR performance is obtained, the cost is more frequent active regeneration of downstream DPF (Lao et al 2020 ). In the experiment of Gao et al (Gao et al 2021 ), SCR was considered to be placed closest to the engine, in the layout of common SCR-DOC-DPF aftertreatment system. Due to the overall thermal improvement of the aftertreatment system, the NO x emission coefficient is better than the first two layouts, but at the cost of higher PM emission and fuel consumption.…”

Research into the Impacts of Driving Cycles and Load Weight on the Operation of a Light Commercial Electric Vehicle

“…When comparing calculations of electric vehicle emissions against the operation of diesel vehicles in particular, it is also necessary to consider the emissions of these vehicles operating specifically in urban environments with emissions from the forced regeneration of particulate filters, which often needs to be performed outside normal vehicle operation, i.e., after decommissioning these vehicles or when they are in service centers. On the other hand, it must be considered that the production of NOx emissions in the urban operation of diesel engines of ordinary passenger cars that meet the Euro 6 emission limits is 5 to 16 times lower than the declared production according to the measuring cycles; in addition, we must also consider the production of CO 2 , which is about 94% higher than its value declared by vehicle manufacturers [54]. At the same time, indirect and external emissions from electric vehicles need to be taken into account as well.…”