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디젤기관에서 산화촉매장치에 의한 배출가스 저감에 관한 시뮬레이션 연구
한영출(Y. C. Han),김종춘(J. C. Kim),김재섭(T. S. Kim) 한국자동차공학회 1996 한국자동차공학회 춘 추계 학술대회 논문집 Vol.1996 No.11_1
Among aftertreatment devices which reduce exhaust gas of diesel engine, diesel oxidation catalyst(DOC) with high reduction efficiency for gaseous matter and particulate matter is now studied actively. In this study, a transient one-dimensional model developed to simulate the thermal and conversion characteristics of adiabatic monolithic converterss operating under warm-up conditions is presented. This model takes into account the gas-solid heat and mass transfer, axial heat conduction. chemical reactions and the related heat release. The model has been used to analyze the transient response of an axisymmetric catalytic converter during a warm-up as a function of catalyst design parameters and operation conditions in order to observe their effects on th e lightoff behaviour. The experimental test was carried out in two steps: the first on a sample for lightoff test and the second on 2400 cc light diesel engine whthDOC.