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다공성 펠렛을 포집재로 사용하는 매연여과장치의 배압 및 재생 특성에 관한 연구
金鎭玄,柳鍾植,文學勳,車京玉 明知大學校 産業技術硏究所 2006 産業技術硏究所論文集 Vol.25 No.-
Diesel particulate trap is a core technology for the reduction of PM from diesel vehicles. This study presents the features and the characteristics of DPF system when using pellet type filters. In comparison with wall-flow filter, the pellet filter has the advantages of cracking free during regeneration and shape flexibility. Experiments are conducted in a test bench simulated as diesel engine exhaust condition. Pressure drop and particle loading rate was compared by using two pellet filters having the porosity of 70% and 0%. Also its regeneration was tested.
EEPS 및 Cavity 회전형 희석장치를 이용한 디젤 입자의 입경 분포 연구
金鎭玄,李俊瑞,車京玉 明知大學校 産業技術硏究所 2006 産業技術硏究所論文集 Vol.25 No.-
EEPS is a newly introduced instrument for size distribution measurement of engine exhaust particles. It can measure nano-particles with an adequate resolution and in real time. In this study, the characteristics of EEPS were compared with ELPI and SMPS. EEPS showed a same effect of engine load on the size distribution with ELPI and SMPS. But the quantitative results of EEPS weremore similar to SMPS than ELPI, because the EEPS and SMPS use a same principle for classifying particles by size. The capability for transient measurement of EEPS was equivalent to that of ELPI. Additionally, the effects of dilution ratio and heating the dilution gas on the size distribution of the diesel particles werestudied using a rotating cavity type diluter.