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Filtration Characteristics of Metal Foam Filters for DPF Combined with Electrostatic Precipitation Mechanism  

Park, Seok-Joo (Clean Energy System Research Center, Korea Institute of Energy Research)
Lee, Dong-Geun (Department of Mechanical Engineering, Chungnam National University)
Kim, Jin-Hyun (Department of Mechanical Engineering, Myongji University)
Cho, Gyu-Baek (Engine R&D Group, Korea Institute of Machinery and Materials)
Kim, Hong-Suk (Engine R&D Group, Korea Institute of Machinery and Materials)
Jeong, Young-Il (Engine R&D Group, Korea Institute of Machinery and Materials)
Publication Information
Transactions of the Korean Society of Automotive Engineers / v.15, no.2, 2007 , pp. 151-158 More about this Journal
Abstract
Filtration studies, using simulated test nanoparticles or diesel nanoparticles, have been performed about Inconel foam filters for DPF combined with electrostatic precipitation. The simulated test particles were synthesized by laser ablation in the nitrogen atmosphere at the standard condition. The diesel particles were exhausted from the diesel engine driven on the condition of idle or load mode. Filtration efficiency of the metal foam filter is very low because most of particles are penetrated through the large pores of filter. However, the efficiency was considerably improved by applying the electric field to the filter and/or charging the nanoparticles. Nevertheless, the pressure drop of filter hardly increased because the filter-pores were not clogged by deposited particles and kept open.
Keywords
DPF; Diesel particulate matter; Metal filter; Electrostatic precipitation; Penetration rate;
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