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Conversion Characteristics of Warm-up Catalytic Converter for the Diesel Vehicle  

Choi Byungchul (school of Mechanical Systems Engineering, Chonnam National University)
Juhng Woonam (school of Mechanical Systems Engineering, Chonnam National University)
Yoon Youngbae (Graduate School of Mechanical Engineering, Chonnam National University)
Jung Myunggun (R & D Center, Ordeg Company)
Publication Information
Transactions of the Korean Society of Automotive Engineers / v.13, no.3, 2005 , pp. 80-86 More about this Journal
Abstract
In this study, we investigated the characteristics of the conversion efficiency and the effect of ageing Diesel Oxidation Catalyst (DOC). The DOC was composed of Warm-up Catalytic Converter (WCC) and Underbody Catalytic Converter (UCC). As the result, the conversion efficiency of THC was 10$\~$50$\%$ on WCC and 30$\~$40$\%$ on UCC .The conversion efficiency of CO was 80$\~$90$\%$ on WCC and remained 10$\~$20$\%$ of CO was purified on UCC. The WCC shows high conversion efficiency on CO. After 20 hours aging process of engine bench, conversion efficiencies of THC and CO were improved a little, because it was activated catalyst surface by 20 hours aging. In case of 80 hours aging, the conversion efficiencies of THC and CO were decreased on WCC. However, the UCC was not affected by aging process .
Keywords
디젤엔진;산화촉매;열화;
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