TY - JOUR
T1 - Size-resolved engine exhaust aerosol characteristics in a metal foam particulate filter for GDI light-duty vehicle
AU - Choi, Kwanhee
AU - Kim, Juwon
AU - Ko, Ahyun
AU - Myung, Cha Lee
AU - Park, Simsoo
AU - Lee, Jeongmin
N1 - Funding Information:
This study was supported by the Korea Ministry of Knowledge Economy and Korea University Grant .
Copyright:
Copyright 2019 Elsevier B.V., All rights reserved.
PY - 2013/3
Y1 - 2013/3
N2 - The particulate emissions generated from a side-mounted 2.4L gasoline direct injection (GDI) engine were evaluated using a metal foam-type gasoline particulate filter (GPF), placed on the downstream of a three-way catalyst. An ULEV legislation-compliant light-duty vehicle was tested under the new European driving cycle (NEDC) and at constant-speed driving conditions. Particle number (PN) concentrations, particulate size distribution and the filtration efficiency of the GPF were evaluated with the condensation particle counter (CPC) and the differential mobility spectrometer (DMS). The PN emissions for the entire NEDC were 1.17E+12N/km for the base GDI vehicle and 4.99E+11N/km for the GPF-equipped GDI vehicle, and the filtration efficiency of the GPF was 57%. In particular, the number of sub-23nm particles formed in the GDI vehicle was substantially reduced, with 97% efficiency. The pressure drop in the metal foam-type GPF was constrained to be below 1.0kPa at a 120km/h vehicle speed, and as a result, the fuel economy and the CO2 emission for the GPF-applied vehicle were equivalent to those for the base vehicle.
AB - The particulate emissions generated from a side-mounted 2.4L gasoline direct injection (GDI) engine were evaluated using a metal foam-type gasoline particulate filter (GPF), placed on the downstream of a three-way catalyst. An ULEV legislation-compliant light-duty vehicle was tested under the new European driving cycle (NEDC) and at constant-speed driving conditions. Particle number (PN) concentrations, particulate size distribution and the filtration efficiency of the GPF were evaluated with the condensation particle counter (CPC) and the differential mobility spectrometer (DMS). The PN emissions for the entire NEDC were 1.17E+12N/km for the base GDI vehicle and 4.99E+11N/km for the GPF-equipped GDI vehicle, and the filtration efficiency of the GPF was 57%. In particular, the number of sub-23nm particles formed in the GDI vehicle was substantially reduced, with 97% efficiency. The pressure drop in the metal foam-type GPF was constrained to be below 1.0kPa at a 120km/h vehicle speed, and as a result, the fuel economy and the CO2 emission for the GPF-applied vehicle were equivalent to those for the base vehicle.
KW - Gasoline direct injection
KW - Gasoline particulate filter
KW - Metal foam
KW - Particle number concentration
KW - Particle size distribution
KW - Particulate matter
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U2 - 10.1016/j.jaerosci.2012.11.002
DO - 10.1016/j.jaerosci.2012.11.002
M3 - Article
AN - SCOPUS:84871449832
SN - 0021-8502
VL - 57
SP - 1
EP - 13
JO - Journal of Aerosol Science
JF - Journal of Aerosol Science
ER -