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배출가스의 온도 및 유량이 최적 촉매 분포에 미치는 영향에 관한 연구

Title
배출가스의 온도 및 유량이 최적 촉매 분포에 미치는 영향에 관한 연구
Other Titles
A Study on the Effects of Exhaust Gas Temperature and Flow Rate on the Optimal Catalyst Activity Profiles
Author
김우승
Keywords
Catalyst (촉매); Catalytic Converter (촉매변환기); Axial Distribution (축방향 분포); Mathematical Modeling (수학적 모델링); Numerical Analysis (수치 해석); Optimization (최적화)
Issue Date
2009-09
Publisher
한국자동차공학회
Citation
2009 KSAE 부문종합 학술대회, Page. 250-256
Abstract
In practical applications, monolithic catalytic converters are operated at non-isothermal conditions. In this case, the active metal distribution along the length of the converter may influence its performance. Indeed, better conversions can be achieved by controlling the distribution of the same quantity of active material. In this study, a 1D quasi-steady plug-flow reactor model has been adopted to predict the transient thermal and conversion characteristics of a monolithic catalytic converter. The optimal design of a longitudinal noble metal distribution of a fixed amount of catalyst is investigated to obtain the best performance of a dual monolithic catalytic converter by using a micro genetic algorithm with consideration of heat transfer, mass transfer, and chemical reaction in the monolith under various operating conditions. The optimal axial distribution of the catalyst is determined by solving the multi-objective optimization problems which are to minimize both the CO cumulative emissions during constant operating condition, and the difference between the integral value of a catalyst distribution function over the monolith volume and total catalytic surface area over total monolith volume.
URI
http://www.dbpia.co.kr/Article/NODE01506604http://repository.hanyang.ac.kr/handle/20.500.11754/104094
Appears in Collections:
COLLEGE OF ENGINEERING SCIENCES[E](공학대학) > MECHANICAL ENGINEERING(기계공학과) > Articles
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