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A Study of Measurement and Analysis of Flow Distribution in a Close-Coupled Catalytic Converter
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 Title & Authors
A Study of Measurement and Analysis of Flow Distribution in a Close-Coupled Catalytic Converter
Jo, Yong-Seok; Kim, Deuk-Sang; Ju, Yeong-Cheol;
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 Abstract
In this study, results from an experimental and numerical study of flow distribution in a close-coupled catalytic converter (CCC) are presented. The experiments were carried out using a glow measurement system. Flow distribution at the exit of the first monolith in the CCC was measured using a pitot tube under steady and transient flow conditions. Numerical analysis was done using a CF D code at the same test conditions, and the results were compared with the experimental results. Experimental results showed that the uniformity index of exhaust gas velocity decreases as Reynolds number increases. Under the steady flow conditions, flow through each exhaust pipe concentrates on a small region of the monolith. Under the transient flow conditions, flow through each exhaust pipe with the engine firing order interacts with each other to spread the flow over the monolith face. The numerical analysis results support the experimental results, and help explain the flow pattern in the entry region of the CCC.
 Keywords
Exhaust Pipe;Close-coupled Catalytic Converter;Exhaust Gas Flow Distribution;Flow Uniformity Index;
 Language
Korean
 Cited by
1.
배기매니폴드 직접부착 촉매장치의 배기 유동특성,박영철;이창식;

대한기계학회논문집B, 2003. vol.27. 7, pp.837-844 crossref(new window)
2.
LDV Measurement, Flow Visualization and Numerical Analysis of Flow Distribution in a Close-Coupled Catalytic Converter,;;

Journal of Mechanical Science and Technology, 2004. vol.18. 11, pp.2032-2041
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