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연태헌(Taehun Yeon),한현식(Hyunsik Han) 한국자동차공학회 2007 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
In order to meet the stringent emissions regulations, new aftertreatment technologies such as EHC, secondary air injection, spark retardation and HC Trap for reducing the cold start emission have been proposed, and some of them have already been incorporated into production, to address these issues. This paper introduces the new technology which can significantly lower cold-start emission from gasoline vehicle by supplying air into the catalyst inlet. right after the engine shut-down. Modeling strongly indicates that might be associated with oxygen stored in the catalyst by the air injection.
국내06/북미ULEV-II 대응 촉매장치 강건설계 최적화 연구
김상범(Sangbeom Kim),김성근(Sungkun Kim),장한수(Hansoo Chang),김홍집(Hongjip Kim),연태헌(Taehun Yeon) 한국자동차공학회 2009 한국자동차공학회 학술대회 및 전시회 Vol.2009 No.11
The conventional aftertreatment systems to meet the stringent ULEV-Ⅱ emission regulation are usually composed of warm-up catalytic converter (WCC) and underfloor catalytic converter (UCC). However, those systems bring high cost, high back pressure, the limit of engine room for package design, and other side effects. The new optimized system needs to solve these problems and to meet ULEV-Ⅱ emission regulation efficiently. There are many technologies and design parameters in exhaust catalytic converter systems ; exhaust manifold structure, exhaust gas flow distribution, location of catalytic converter, PM coating technologies, substrate characteristics, and volume of catalysts. It is a key factor to make a optimized robust system with those parameters and technologies described. The new optimized exhaust and Integrated Close-coupled Catalytic Converter (ICCC) system can meet ULEV-Ⅱ regulation and can solve those problems of conventional system by a robust design. This study was focused on the optimization process of exhaust and ICCC system to determine robust design control factors, which are durability of catalyst - aged and/or fresh - , by vehicle evaluation, FTP-75.