Nanoparticle Filtration Characteristics of Advanced Metal Foam Media for a Spark Ignition Direct Injection Engine in Steady Engine Operating Conditions and Vehicle Test Modes

Cha-Lee Myung, Juwon Kim, Wonwook Jang, Dongyoung Jin, Simsoo Park and Jeongmin Lee
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Cha-Lee Myung: School of Mechanical Engineering, Korea University, 145, Anam-ro, Seongbuk-gu, Seoul 136-701, Korea
Juwon Kim: School of Mechanical Engineering, Korea University, 145, Anam-ro, Seongbuk-gu, Seoul 136-701, Korea
Wonwook Jang: School of Mechanical Engineering, Korea University, 145, Anam-ro, Seongbuk-gu, Seoul 136-701, Korea
Dongyoung Jin: School of Mechanical Engineering, Korea University, 145, Anam-ro, Seongbuk-gu, Seoul 136-701, Korea
Simsoo Park: School of Mechanical Engineering, Korea University, 145, Anam-ro, Seongbuk-gu, Seoul 136-701, Korea
Jeongmin Lee: Alantum Corporation, 8F, Starwood B/D, 5439-1, Sangdaewon 2-dong, Joongwon-gu, Seongnam-city, Gyonggi-do 462-819, Korea

Energies, 2015, vol. 8, issue 3, 1-17

Abstract: In this study, the particle formation and reduction characteristics at the engine-out position, after a three-way catalyst (TWC) and a metal foam gasoline particulate filter (GPF), were evaluated for a gasoline direct-injection (GDI) engine under part-load operating conditions. The vehicle tests were performed under the Federal Test Procedure-75 (FTP-75) and the Highway Fuel Economy Test (HWFET) modes. Particle number (PN) concentrations, size distributions, and the filtering efficiency with the GPF were evaluated with a condensation particle counter (CPC) and a differential mobility spectrometer (DMS500). Under steady engine operating conditions, the PN concentrations at the engine-out position were 9.7 × 10 5 –2.5 × 10 6 N/cc. While, the PN concentrations after the GPF were 9.2 × 10 4 –3.5 × 10 5 N/cc, and the PN was reduced by 77%–96%. The PN filtering efficiency with the GPF-GDI vehicle reached approximately 58% in the FTP-75 and 62% in the HWFET mode. The PN concentration of the GPF-GDI vehicle was significantly reduced to 3.95 × 10 11 N/km for the FTP-75 and 8.86 × 10 10 N/km for the HWFET mode. The amount of nucleation mode particles below 23 nm was substantially reduced with the GPF-GDI vehicle. The fuel economy, CO 2 , and regulated emissions of the GPF-GDI vehicle were equivalent to those of the base GDI vehicle under the vehicle certification modes.

Keywords: gasoline direct injection engine; gasoline particulate filter; particle number; sub-23 nm particles; pressure drop (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2015
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (5)

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