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

Energies

Cha-Lee Myung¹  Juwon Kim¹  Wonwook Jang¹  Dongyoung Jin¹  Simsoo Park¹  Jeongmin Lee² 

[1] School of Mechanical Engineering, Korea University, 145, Anam-ro, Seongbuk-gu, Seoul 136-701, Korea; E-Mails:;Alantum Corporation, 8F, Starwood B/D, 5439-1, Sangdaewon 2-dong, Joongwon-gu, Seongnam-city, Gyonggi-do 462-819, Korea; E-Mail:

关键词: gasoline direct injection engine;    gasoline particulate filter;    particle number;    sub-23 nm particles;    pressure drop;   

DOI  :  10.3390/en8031865

来源: mdpi

【 摘 要 】

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 × 10⁵–2.5 × 10⁶ N/cc. While, the PN concentrations after the GPF were 9.2 × 10⁴–3.5 × 10⁵ 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 × 10¹¹ N/km for the FTP-75 and 8.86 × 10¹⁰ 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, CO₂, and regulated emissions of the GPF-GDI vehicle were equivalent to those of the base GDI vehicle under the vehicle certification modes.

【 授权许可】

CC BY   
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