Flow Distribution in a Close-Coupled Catalytic Converter 982552
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 specially designed for this study under steady and transient flow conditions. Flow distribution at the exit of the first monolith was measured by a pitot tube. Numerical analysis was also performed for comparison.
Experimental results showed that the flow uniformity index decreases as Reynolds number for the flow increases. For steady flow conditions, the flow through each exhaust pipe concentrates on a specific region of the monolith. The transient test results showed that the flow through each exhaust pipe, in the engine firing order, interacts with each other to make the flow distribution uniform. The numerical analysis results supported the experimental results, and helped explain the flow distribution in the CCC.
Citation: Cho, Y., Kim, D., Han, M., Joo, Y. et al., "Flow Distribution in a Close-Coupled Catalytic Converter," SAE Technical Paper 982552, 1998, https://doi.org/10.4271/982552. Download Citation
Author(s):
Yong-Seok Cho, Duk-Sang Kim, Minsub Han, Youngcheol Joo, Jong-Hwa Lee, Kyoung-Doug Min
Affiliated:
Kookmin University, Samsung Motors Inc.
Pages: 9
Event:
International Fall Fuels and Lubricants Meeting and Exposition
ISSN:
0148-7191
e-ISSN:
2688-3627
Also in:
Taking Gasoline Vehicles Beyond Ulev: Catalyst System Approaches-SP-1392, SAE 1998 Transactions - Journal of Fuels and Lubricants-V107-4
Related Topics:
Catalytic converters
Exhaust pipes
Logistics
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