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대형디젤엔진용 Metal Foam Filter의 미세입자 특성
송호영(Hoyoung Song),이민호,김재권(Jaigueon Kim),정충섭(Choongsub Jung),박만호(Manho Park),이정민(Jungmin Lee) 한국자동차공학회 2010 한국자동차공학회 학술대회 및 전시회 Vol.2010 No.11
Fine particles have the greatest demonstrated impact on human health. Their small size allows them to get deep into the lungs and from there they can reach or trigger inflammation in the lung, blood vessels or the heart, and perhaps other organs. Recently many studies have been performed about fine particles, specially nano particle less than 100㎚ size. In this study, we have performed experimental study on SFC reduction characteristics of emission, specially PM and PN(nano particle) and confirmed whether SFC have an advantage of reduction of particulate matter. EEPS measured the sample gas directly extracted from the tailpipe and used first dilutor between tailpipe and EEPS. We found that SFC reduced PM about 49% and PN about 62% and have a high reduction performance of nano particles.
대형디젤엔진용 Metal Fiber Filter의 미세입자 배출특성에 관한 연구
송호영(HoYoung Song),김기호(Ki Ho Kim),김재권(Jai Gueon Kim),정충섭(Choong Sub Jung),이세영(Se Young LEE),이덕의(Duck Euy Lee) 한국자동차공학회 2009 한국자동차공학회 학술대회 및 전시회 Vol.2009 No.11
This study was focused on nanoparticle emission characteristics of metal fiber filter for heavy duty diesel engine. It was known that Metal Fiber Filter has many superior characteristics like high corrosion resistance, high-temperature resistance(up to 1000℃), very low pressure drop, excellent mechanical strength, long on-stream life, high porosity. In this study, ESC(European Steady Cycle) and ETC(European Transient Cycle) was applied and PM(Particulate Matter) was measured directly from tail-pipe. DMS 500 was used to analyze PM behaviors. BPT(balance point temperature) of Metal Fiber Filter was about 380℃. Total Particle Number without DPF recorded 1.02×10?(#/㎤) on ESC and 2.38x10?(#/㎤) on ETC. These with DPF reduced to 2.11x10?(#/㎤) on ESC and 6.73x10 5(#/㎤) on ETC. Especially Nucleation mode on both modes was relatively more reduced than accumulation mode.
연료조성 변화에 따른 노킹 및 입자상물질 상관관계 규명 연구
송호영(Hoyoung Song),이민호(Minho Lee) 한국자동차공학회 2022 한국자동차공학회 지부 학술대회 논문집 Vol.2022 No.5
This study investigated the effects of fuel composition on knocking generation and particulate matter of a single cylinder port fuel injection spark-ignition engine. Hydrocarbon confounds such as iso-octane and aromatic hydrocarbons and ETBE blended fuels were used as fuels in this study. The ignition timing was varied to investigate the effects of fuel composition and knocking from 10° to 40° before top dead center (BTDC). The experimental results indicated that as the fuel evaporation improved, the ignition delay and combustion duration were shortened. Additionally, the knocking of fuels with these characteristics occurred earlier than the other fuels, and the knocking intensity of these fuels was stronger. As a result of the change in ignition timing, knocking begined when the combustion duration was shorter than 19 °CA, and the intensity of knocking increased. A fuel with higher iso-octane content at the same combustion duration has relatively high resistance to knocking. Particulate emissions sharply increased as the knocking intensity increased. PN increased with increasing knocking strength. Type-1 with high iso-octane content in hydrocarbon-based fuel has the lowest knocking strength, and PN is low.