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Simulation on Characteristic of Gas Flow and Mixing in Exhaust System
Technical Paper
2000-05-0097
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English
Abstract
One of the methods to reduce the engine exhaust emission is to use CCC. To obtain the maximum conversion efficiency in CCC, the exhaust gas should be uniformly distributed across the frontal area of catalytic substrate and the engine should be operated close to the stoichiometric air/fuel ratio through the use of an oxygen sensor in the exhaust system.
A theoretical and computational study of three-dimensional unsteady compressible non-reacting flow in three kinds of exhaust manifold and CCC system was performed to understand the flow characteristics and to estimate the effects of the geometry change. Also, in each case, proper oxygen sensor location where the exhaust gas can be efficiently measured is proposed.
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Authors
Citation
Chang, H., Kim, H., and Park, S., "Simulation on Characteristic of Gas Flow and Mixing in Exhaust System," SAE Technical Paper 2000-05-0097, 2000.Also In
References
- Lai M. C. Kim J. Y. Cheng C. Y. Li P. Chui G. Pakko J. D. “Three Dimensional Simulations of Automotive Catalytic Converter Internal Flow” SAE Paper 910200
- Jeong SooJin Kim Taehun “CFD Investigation of the 3-Dimensional Unsteady Flow in the Catalytic Converter” SAE Paper 971025
- Park Sang-Bong Kim Han-Sang Cho Kyung-Min Kim Woo-Tae “An Experimental and Computational Study of Flow Characteristics in Exhaust Manifold and CCC (Close-Couped Catalyst)” SAE Paper 980128
- Hauber Thomas Zacke Peter Braun Joachim “Influence of the Space between Monoliths and the Geometry of Endcones on the Conversion Rates of a Catalytic Converter” SAE Paper 980424
- Park Simoo Kim Ho Yong Cho Young Jin Lee Sun Youp Yoon Kum Jung “Flow Analysis and Catalytic Characteristic for The Various Catalyst Shapes” SAE Paper 1999-01-1541
- Star-CD Ver. 3.0 User's Manual 1996 Computational Dynamics Limited
- Tavaczynski Rodney J. Heywood John B. Keck James C. “Time-Resolved Measurements of Hydrocarbon Mass Flowrate in the Exhaust of a Spark-Ignition Engine” SAE Paper 720112
- Weltens H. Bressler H. Terres F. Neumaier H. Rammoser D. “Optimization of Catalytic Converter Gas Flow Distribution by CFD prediction” SAE Paper 930780
- Bressler H. Rammoser D. Neumaier H. Terres F. “Experimental and Predictive Investigation of a Close Coupled Catalyst Converter with Pulsating Flow” SAE Paper 960564