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조용석(Y.S.Cho),김득상(D.S.Kim),이윤석(Y.S.Lee),송대근(D.K.Song),주영철(Y.C.Joo),한민섭(M.S.Han) 한국자동차공학회 1998 한국자동차공학회 춘 추계 학술대회 논문집 Vol.1998 No.11_1
Results from an experimental study to measure the conversion efficiency of a close-coupled catalytic converter (CCC) are presented. Exhaust gases upstream and downstream of the catalyst are sampled by a sampling probe, and analyzed by an exhaust gas analyzer. The distribution of the exhaust species and catalyst conversion efficiency over the catalyst face is compared with the velocity distribution in the catalytic converter.<br/> Results showed that the conversion efficiency is not strongly dependent on the velocity distribution, but the species concentration distribution correlates well with the velocity distribution. It was found that the non-uniform velocity distribution results in non -uniform species distribution over the catalyst face and speed up the aging process in a specific region of the catalyst.<br/>