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LDV 와 유동가시화를 이용한 CCC 입구의 유동분포 측정 및 수치해석
조용석(Y.S.Cho),김득상(D.S.Kim),정태용(T.Y.Jung),왕희준(H.J.Wang),김용관(Y.K.Kim),주영철(Y.C.Joo),한민섭(M.s.Han) 한국자동차공학회 1998 한국자동차공학회 춘 추계 학술대회 논문집 Vol.1998 No.5_1
Results from an experimental study of flow distribution in a close-coupled catalytic converter (CCC) are presented. The experiments were carried out with a flow measurement system under steady and transient flow conditions. The flow distribution of the CCC was measured by LDV system and flow visualization. Results from numerical analysis are also presented.<br/> Experimental results showed that in steady flow conditions, the flow through each exhaust pipe made some flow concentrations on a small region of the CCC inlet. The transient test results showed that the flow through each exhaust pipe in the engine firing order interacted with each other to make the flow distribution uniform. The results of numerical analysis supported the experimental results, and helped explain the flow in the entry region of CCC.<br/>