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정석윤(Seokyoon Jeong),이우(Woo Lee),이기수(Gisoo Lee),김경훈(Kyunghun Kim),배상현(Sanghyun Bae),김혜삼(Hyesam Kim) 한국자동차공학회 2006 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
This research focused on the flow analysis of continuos regeneration Diesel Particulate Filter(DPF) for Diesel engines. Generally diesel engines are relatively superior to gasoline engine on the fuel consumption durability and combustion efficiency. But diesel engines are general1y known to be harmful to environment such as CO, HC, SOF and Particulate Matter(PM). For this reason, as an DPF and quality control of fuel has been applied as an after treatment system. In this study, the analysis was done on an heavy-duty diesel engine on which continuous regeneration DPF was installed in order to investigate the flow distribution and uniformity at the front of catalyst inlet on the change of shape of DPF.
배기저감장치의 촉매선단 입구 길이 변화에 따른 성능특성
정석윤(Seokyoon Jeong),임준형(Junhyoung Im),김상만(Sangman Kim),김혜삼(Hyesam Kim),김경훈(Kyunghun Kim) 한국자동차공학회 2008 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
The main constituents of exhaust gas emitted from a vehicle are Nitrogen and Vapor and others include Carbon Dioxide, Carbon Monoxide, Hydrocarbon, Nitrogen Oxide, Particulates. and SO₂. As the countermeasures to this exhaust gas, there are SCR directly resolving NOx, DOC oxidizing HC and CO by using O₂. and DPF removing PM accumulated on filter. In this research, we are about to study each performance characteristic on the front of catalyst inlet on the change of shape for exhaust reduction device.
DOC 배플 위치에 따른 담체 입구에서의 유동균일도 평가
정석윤(Seokyoon Jeong),이우(Woo Lee),이기수(Gisoo Lee),김경훈(Kyunghun Kim),배상현(Sanghyun Bae),김혜삼(Hyesam Kim) 한국자동차공학회 2006 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
The technologies reduction in exhaust emissions from diesel engines are simply defined as two; one is quality control of improvement fuel system and the other is development of diesel exhaust aftertreatment. An aftertreatment devices reduce exhaust gas of diesel engine, diesel oxidacatalyst(DOC) with high reduction efficiency for harmful matter and particulate matter. We carried out the evaluation of flow uniformity in substrate inlet on location Diesel Oxidation Catalysts (DOC) for heavy duty diesel engine vehicles. It was found that better conversion efficiency depends on the condition of temperature and shape of DOC inlet. In this study, the location of baffle inside DOC was analyzed in order to show the flow distribution and uniformity research as well as the effects of flow analysis.
질소산화물 저감을 위한 SCR TYPE CEM의 설계평가
정석윤(Seokyoon Jeong),정홍석(Hongseok Jung),이근우(Kunwoo Yi),조연근(Yonguen Cho),김경훈(Kyunghun Kim),김혜삼(Hyesam Kim) 한국자동차공학회 2006 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
SCR system for diesel engine vehicles is a device to reduce NOx from the emission gas of the diesel engine causing selective catalytic reaction by utilizing a metal catalyst with ammonia, NH₃, or HC as a reductant, and the device is recognized as a unique technology to meet future emission regulation for NOx such as Euro-V (2008). Under the current circumstance that the development for diverse post process technologies is in process, in this study, we evaluated the pressure and uniformity inside of SCR TYPE CEM(Catalyst Exhaust Muffler) reducing NOx among noxious gasses, through design and CFD(Computational Fluid Dynamics) analysis.