Abstract
Since the Euro 5 regulation was implemented, increasing numbers of Light-Duty (LD) diesel vehicles are being equipped with Diesel Particulate Filter (DPF). Inherently, if a DPF is filled with soot and Particulate Matter (PM), then the DPF must be regenerated periodically. Therefore, this study investigates how an active regeneration process influences the emissions of gases and the size-resolved particle emissions from LD diesel vehicles. The experimental apparatuses were installed to measure the exhaust gas emissions during regeneration events. Two Fast particle analyzers (DMS-500) were positioned upstream and downstream of the DPF to measure the PN concentration and particle size distribution. X-ray Photoelectron Spectroscopy (XPS) was used to investigate the elemental composition and chemical state information of the collected soot samples during regeneration. The experimental results showed that during an active regeneration, the post-injection rate increased, and the post injection timing was significantly retarded, which caused the peak pressure of the cylinder and the thermal efficiency to decrease and the exhaust temperature to increase. According to the upstream PN results, a large increase in the number of nucleation particles occurred during an active regeneration due to the retarded and increased post-injection process. In contrast, the accumulation mode particles measured downstream of the DPF had a majority of total particles during a regeneration because of the increased exhaust temperature, which caused the nucleation mode particles to be easily oxidized.
| Original language | English |
|---|---|
| Pages (from-to) | 62-77 |
| Number of pages | 16 |
| Journal | Journal of Aerosol Science |
| Volume | 91 |
| DOIs | |
| Publication status | Published - 2016 Jan 1 |
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Keywords
- Active regeneration
- Diesel particulate filter
- Light-duty diesel engine
- Particle size distribution
- Post-injection
- Soot combustion
ASJC Scopus subject areas
- Materials Science(all)
- Environmental Chemistry
- Pollution
Cite this
Effect of active regeneration on time-resolved characteristics of gaseous emissions and size-resolved particle emissions from light-duty diesel engine. / Ko, Jinyoung; Si, Woosung; Jin, Dongyoung; Myung, Cha Lee; Park, Simsoo.
In: Journal of Aerosol Science, Vol. 91, 01.01.2016, p. 62-77.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Effect of active regeneration on time-resolved characteristics of gaseous emissions and size-resolved particle emissions from light-duty diesel engine
AU - Ko, Jinyoung
AU - Si, Woosung
AU - Jin, Dongyoung
AU - Myung, Cha Lee
AU - Park, Simsoo
PY - 2016/1/1
Y1 - 2016/1/1
N2 - Since the Euro 5 regulation was implemented, increasing numbers of Light-Duty (LD) diesel vehicles are being equipped with Diesel Particulate Filter (DPF). Inherently, if a DPF is filled with soot and Particulate Matter (PM), then the DPF must be regenerated periodically. Therefore, this study investigates how an active regeneration process influences the emissions of gases and the size-resolved particle emissions from LD diesel vehicles. The experimental apparatuses were installed to measure the exhaust gas emissions during regeneration events. Two Fast particle analyzers (DMS-500) were positioned upstream and downstream of the DPF to measure the PN concentration and particle size distribution. X-ray Photoelectron Spectroscopy (XPS) was used to investigate the elemental composition and chemical state information of the collected soot samples during regeneration. The experimental results showed that during an active regeneration, the post-injection rate increased, and the post injection timing was significantly retarded, which caused the peak pressure of the cylinder and the thermal efficiency to decrease and the exhaust temperature to increase. According to the upstream PN results, a large increase in the number of nucleation particles occurred during an active regeneration due to the retarded and increased post-injection process. In contrast, the accumulation mode particles measured downstream of the DPF had a majority of total particles during a regeneration because of the increased exhaust temperature, which caused the nucleation mode particles to be easily oxidized.
AB - Since the Euro 5 regulation was implemented, increasing numbers of Light-Duty (LD) diesel vehicles are being equipped with Diesel Particulate Filter (DPF). Inherently, if a DPF is filled with soot and Particulate Matter (PM), then the DPF must be regenerated periodically. Therefore, this study investigates how an active regeneration process influences the emissions of gases and the size-resolved particle emissions from LD diesel vehicles. The experimental apparatuses were installed to measure the exhaust gas emissions during regeneration events. Two Fast particle analyzers (DMS-500) were positioned upstream and downstream of the DPF to measure the PN concentration and particle size distribution. X-ray Photoelectron Spectroscopy (XPS) was used to investigate the elemental composition and chemical state information of the collected soot samples during regeneration. The experimental results showed that during an active regeneration, the post-injection rate increased, and the post injection timing was significantly retarded, which caused the peak pressure of the cylinder and the thermal efficiency to decrease and the exhaust temperature to increase. According to the upstream PN results, a large increase in the number of nucleation particles occurred during an active regeneration due to the retarded and increased post-injection process. In contrast, the accumulation mode particles measured downstream of the DPF had a majority of total particles during a regeneration because of the increased exhaust temperature, which caused the nucleation mode particles to be easily oxidized.
KW - Active regeneration
KW - Diesel particulate filter
KW - Light-duty diesel engine
KW - Particle size distribution
KW - Post-injection
KW - Soot combustion
UR - http://www.scopus.com/inward/record.url?scp=84944909498&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84944909498&partnerID=8YFLogxK
U2 - 10.1016/j.jaerosci.2015.09.007
DO - 10.1016/j.jaerosci.2015.09.007
M3 - Article
AN - SCOPUS:84944909498
VL - 91
SP - 62
EP - 77
JO - Journal of Aerosol Science
JF - Journal of Aerosol Science
SN - 0021-8502
ER -