Energy-efficient heating strategies of diesel oxidation catalyst for low emissions vehicles

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Energy-efficient heating strategies of diesel oxidation catalyst for low emissions vehicles. / Hamedi, Mohammad Reza; Doustdar, Omid; Tsolakis, Athanasios; Hartland, Jonathan.

In: Energy, Vol. 230, 120819, 01.09.2021.

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@article{4d398d8ec8d24c0a800432d8e0ee594f,
title = "Energy-efficient heating strategies of diesel oxidation catalyst for low emissions vehicles",
abstract = "Electrically heated catalyst (EHC) is integrated with the exhaust aftertreatment system to reduce cold-start emissions. Implementation of this proposed emission control technology will also provide addition CO2 and fuel consumption benefits. Developing an energy-efficient heating strategy has shown a significant reduction in the time required for the catalysts to light-off from the cold-start. In this study, it was found for the first time that the novel pulsating heating strategy with the pulse width of 30 s compared with typical heating strategy improved the CO and THC emissions conversion efficiency up to 34% and 31%, respectively. In contrast, a further increase in the heating pulse leads to lower emissions' conversion performance due to extending heating off period and consequently leading to the catalyst's light-out. Furthermore, combined electrical and fuel post-injection catalyst heating can benefit from the EHC's quick catalyst light-off and higher heating efficiency of the fuel post-injection, which showed a significant improvement in the DOC's emissions conversion performance. This approach can result in higher catalyst heating efficiencies and lower THC emissions which can be critical to meet the emissions legislations. An increase in the DOC's outlet temperature can be also beneficial for downstream aftertreatment component heating, e.g. DPF regeneration.",
keywords = "Aftertreatment, Catalyst light-off, Electrically heated catalyst, Engine cold-start, Gaseous emissions, Thermal management",
author = "Hamedi, {Mohammad Reza} and Omid Doustdar and Athanasios Tsolakis and Jonathan Hartland",
note = "Funding Information: Jaguar Land Rover and the University of Birmingham are gratefully acknowledged for a financial grant to Mohammad Reza Hamedi. Jaguar Land Rover is also acknowledged for providing the funding for technical support. Publisher Copyright: {\textcopyright} 2021 Elsevier Ltd",
year = "2021",
month = sep,
day = "1",
doi = "10.1016/j.energy.2021.120819",
language = "English",
volume = "230",
journal = "Energy",
issn = "0360-5442",
publisher = "Elsevier Korea",

}

RIS

TY - JOUR

T1 - Energy-efficient heating strategies of diesel oxidation catalyst for low emissions vehicles

AU - Hamedi, Mohammad Reza

AU - Doustdar, Omid

AU - Tsolakis, Athanasios

AU - Hartland, Jonathan

N1 - Funding Information: Jaguar Land Rover and the University of Birmingham are gratefully acknowledged for a financial grant to Mohammad Reza Hamedi. Jaguar Land Rover is also acknowledged for providing the funding for technical support. Publisher Copyright: © 2021 Elsevier Ltd

PY - 2021/9/1

Y1 - 2021/9/1

N2 - Electrically heated catalyst (EHC) is integrated with the exhaust aftertreatment system to reduce cold-start emissions. Implementation of this proposed emission control technology will also provide addition CO2 and fuel consumption benefits. Developing an energy-efficient heating strategy has shown a significant reduction in the time required for the catalysts to light-off from the cold-start. In this study, it was found for the first time that the novel pulsating heating strategy with the pulse width of 30 s compared with typical heating strategy improved the CO and THC emissions conversion efficiency up to 34% and 31%, respectively. In contrast, a further increase in the heating pulse leads to lower emissions' conversion performance due to extending heating off period and consequently leading to the catalyst's light-out. Furthermore, combined electrical and fuel post-injection catalyst heating can benefit from the EHC's quick catalyst light-off and higher heating efficiency of the fuel post-injection, which showed a significant improvement in the DOC's emissions conversion performance. This approach can result in higher catalyst heating efficiencies and lower THC emissions which can be critical to meet the emissions legislations. An increase in the DOC's outlet temperature can be also beneficial for downstream aftertreatment component heating, e.g. DPF regeneration.

AB - Electrically heated catalyst (EHC) is integrated with the exhaust aftertreatment system to reduce cold-start emissions. Implementation of this proposed emission control technology will also provide addition CO2 and fuel consumption benefits. Developing an energy-efficient heating strategy has shown a significant reduction in the time required for the catalysts to light-off from the cold-start. In this study, it was found for the first time that the novel pulsating heating strategy with the pulse width of 30 s compared with typical heating strategy improved the CO and THC emissions conversion efficiency up to 34% and 31%, respectively. In contrast, a further increase in the heating pulse leads to lower emissions' conversion performance due to extending heating off period and consequently leading to the catalyst's light-out. Furthermore, combined electrical and fuel post-injection catalyst heating can benefit from the EHC's quick catalyst light-off and higher heating efficiency of the fuel post-injection, which showed a significant improvement in the DOC's emissions conversion performance. This approach can result in higher catalyst heating efficiencies and lower THC emissions which can be critical to meet the emissions legislations. An increase in the DOC's outlet temperature can be also beneficial for downstream aftertreatment component heating, e.g. DPF regeneration.

KW - Aftertreatment

KW - Catalyst light-off

KW - Electrically heated catalyst

KW - Engine cold-start

KW - Gaseous emissions

KW - Thermal management

UR - http://www.scopus.com/inward/record.url?scp=85106305524&partnerID=8YFLogxK

U2 - 10.1016/j.energy.2021.120819

DO - 10.1016/j.energy.2021.120819

M3 - Article

AN - SCOPUS:85106305524

VL - 230

JO - Energy

JF - Energy

SN - 0360-5442

M1 - 120819

ER -