Passive Regeneration Characteristics of a DOC/Asymmetric-CDPF System for Heavy-Duty Diesel Engines

Duck kyu Oh; Ahyun Ko; Youngmin Woo; Young Jae Lee; Kwan Young Lee; Jong Soo Park

doi:10.1007/s12239-022-0043-9

Passive Regeneration Characteristics of a DOC/Asymmetric-CDPF System for Heavy-Duty Diesel Engines

Duck kyu Oh, Ahyun Ko, Youngmin Woo, Young Jae Lee, Kwan Young Lee, Jong Soo Park

Department of Chemical and Biological Engineering

Research output: Contribution to journal › Article › peer-review

4 Citations (Scopus)

Abstract

In this study, the properties of diesel particulate filter (DPF) structures were analyzed in terms of the particulate matter (PM) regeneration of the catalyzed DPF (cDPF) and the exhaust gas reduction efficiency. The performance of the cDPF in combination with a diesel oxidation catalyst was verified by measuring the balance point temperature (BPT) and by conducting world harmonized transient cycle (WHTC)/world harmonized stationary cycle (WHSC)-mode testing using a heavy-duty diesel engine bench. The BPT measurement results (238 °C) showed that, compared with the symmetric cDPF, the asymmetric cDPF exhibited better PM regeneration properties. Additionally, it demonstrated excellent performance in terms of fuel efficiency and reduction efficiency for the total hydrocarbons, carbon monoxide, and PM in exhaust gases. The NO, NO₂, and NO_x concentrations were analyzed in real time on stream during the cold-WHTC, hot-WHTC, and WHSC mode tests, and the NO₂/NO_x ratio was confirmed according to the cDPF structure. This study indicates the possibility of developing a stable diesel exhaust after-treatment system via passive regeneration by improving the BPT performance, exhaust gas reduction efficiency, and NO₂/NO_x ratio according to the structure of the cDPF.

Original language	English
Pages (from-to)	471-479
Number of pages	9
Journal	International Journal of Automotive Technology
Volume	23
Issue number	2
DOIs	https://doi.org/10.1007/s12239-022-0043-9
Publication status	Published - 2022 Apr

Bibliographical note

Funding Information:
This research was funded by the Center for Environmentally Friendly Vehicle (CEFV) as the Global-Top Project of the Ministry of Environment, Korea (KMOE).

Publisher Copyright:
© 2022, KSAE.

Keywords

Diesel emissions
Diesel oxidation catalyst
Diesel particulate filters
Particulate matter

ASJC Scopus subject areas

Automotive Engineering

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10.1007/s12239-022-0043-9

Cite this

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title = "Passive Regeneration Characteristics of a DOC/Asymmetric-CDPF System for Heavy-Duty Diesel Engines",

abstract = "In this study, the properties of diesel particulate filter (DPF) structures were analyzed in terms of the particulate matter (PM) regeneration of the catalyzed DPF (cDPF) and the exhaust gas reduction efficiency. The performance of the cDPF in combination with a diesel oxidation catalyst was verified by measuring the balance point temperature (BPT) and by conducting world harmonized transient cycle (WHTC)/world harmonized stationary cycle (WHSC)-mode testing using a heavy-duty diesel engine bench. The BPT measurement results (238 °C) showed that, compared with the symmetric cDPF, the asymmetric cDPF exhibited better PM regeneration properties. Additionally, it demonstrated excellent performance in terms of fuel efficiency and reduction efficiency for the total hydrocarbons, carbon monoxide, and PM in exhaust gases. The NO, NO2, and NOx concentrations were analyzed in real time on stream during the cold-WHTC, hot-WHTC, and WHSC mode tests, and the NO2/NOx ratio was confirmed according to the cDPF structure. This study indicates the possibility of developing a stable diesel exhaust after-treatment system via passive regeneration by improving the BPT performance, exhaust gas reduction efficiency, and NO2/NOx ratio according to the structure of the cDPF.",

keywords = "Diesel emissions, Diesel oxidation catalyst, Diesel particulate filters, Particulate matter",

author = "Oh, {Duck kyu} and Ahyun Ko and Youngmin Woo and Lee, {Young Jae} and Lee, {Kwan Young} and Park, {Jong Soo}",

note = "Funding Information: This research was funded by the Center for Environmentally Friendly Vehicle (CEFV) as the Global-Top Project of the Ministry of Environment, Korea (KMOE). Publisher Copyright: {\textcopyright} 2022, KSAE.",

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doi = "10.1007/s12239-022-0043-9",

language = "English",

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AU - Oh, Duck kyu

AU - Ko, Ahyun

AU - Woo, Youngmin

AU - Lee, Young Jae

AU - Lee, Kwan Young

AU - Park, Jong Soo

N1 - Funding Information: This research was funded by the Center for Environmentally Friendly Vehicle (CEFV) as the Global-Top Project of the Ministry of Environment, Korea (KMOE). Publisher Copyright: © 2022, KSAE.

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N2 - In this study, the properties of diesel particulate filter (DPF) structures were analyzed in terms of the particulate matter (PM) regeneration of the catalyzed DPF (cDPF) and the exhaust gas reduction efficiency. The performance of the cDPF in combination with a diesel oxidation catalyst was verified by measuring the balance point temperature (BPT) and by conducting world harmonized transient cycle (WHTC)/world harmonized stationary cycle (WHSC)-mode testing using a heavy-duty diesel engine bench. The BPT measurement results (238 °C) showed that, compared with the symmetric cDPF, the asymmetric cDPF exhibited better PM regeneration properties. Additionally, it demonstrated excellent performance in terms of fuel efficiency and reduction efficiency for the total hydrocarbons, carbon monoxide, and PM in exhaust gases. The NO, NO2, and NOx concentrations were analyzed in real time on stream during the cold-WHTC, hot-WHTC, and WHSC mode tests, and the NO2/NOx ratio was confirmed according to the cDPF structure. This study indicates the possibility of developing a stable diesel exhaust after-treatment system via passive regeneration by improving the BPT performance, exhaust gas reduction efficiency, and NO2/NOx ratio according to the structure of the cDPF.

AB - In this study, the properties of diesel particulate filter (DPF) structures were analyzed in terms of the particulate matter (PM) regeneration of the catalyzed DPF (cDPF) and the exhaust gas reduction efficiency. The performance of the cDPF in combination with a diesel oxidation catalyst was verified by measuring the balance point temperature (BPT) and by conducting world harmonized transient cycle (WHTC)/world harmonized stationary cycle (WHSC)-mode testing using a heavy-duty diesel engine bench. The BPT measurement results (238 °C) showed that, compared with the symmetric cDPF, the asymmetric cDPF exhibited better PM regeneration properties. Additionally, it demonstrated excellent performance in terms of fuel efficiency and reduction efficiency for the total hydrocarbons, carbon monoxide, and PM in exhaust gases. The NO, NO2, and NOx concentrations were analyzed in real time on stream during the cold-WHTC, hot-WHTC, and WHSC mode tests, and the NO2/NOx ratio was confirmed according to the cDPF structure. This study indicates the possibility of developing a stable diesel exhaust after-treatment system via passive regeneration by improving the BPT performance, exhaust gas reduction efficiency, and NO2/NOx ratio according to the structure of the cDPF.

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KW - Diesel oxidation catalyst

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KW - Particulate matter

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Passive Regeneration Characteristics of a DOC/Asymmetric-CDPF System for Heavy-Duty Diesel Engines

Abstract

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