This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Numerical Analysis of the Exhaust Gas Flow and Heat Transfer in a Close-Coupled Catalytic Converter System During Warm-Up
Technical Paper
2001-01-0943
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Event:
SAE 2001 World Congress
Language:
English
Abstract
A new multidimensional calculation method has been developed to simulate the warm-up characteristics of close-coupled catalytic converter systems. First, a one-dimensional gas exchange simulation and a three-dimensional exhaust gas flow calculation are combined to simulate the pulsation gas flow caused by the gas exchange process. The gas flow calculation and a heat transfer calculation are then combined to simulate heat transfer in the exhaust manifold and the catalyst honeycomb under pulsation flow. The predicted warm-up characteristics of the systems examined agreed well with the experimental data. In this simulation, CPU time was reduced greatly through the use of new calculation methods. Finally, the warm-up process of close-coupled catalysts is analyzed in detail with this simulation method. The design requirements for improving warm-up characteristics have been made clear. This simulation procedure is an effective design tool for developing close-coupled catalytic converter systems which have quick warm-up characteristics.
Recommended Content
Authors
Citation
Yoshizawa, K., Mori, K., and Kimura, S., "Numerical Analysis of the Exhaust Gas Flow and Heat Transfer in a Close-Coupled Catalytic Converter System During Warm-Up," SAE Technical Paper 2001-01-0943, 2001, https://doi.org/10.4271/2001-01-0943.Also In
References
- Takahashi, H. Ishizuka, Y. Tomita, M. Nishizawa, K. “Engine-Out and Tail-Pipe Emission Reduction technologies of V-6 LEVs” SAE Paper 980674 1998
- Aita, S. Tabbal, A. Munck, G. Fujiwara, K. Hongoh, H. Tamura, E. Obana, S. “Numerical Simulation of Port-Valve-Cylinder Flow in Reciprocating Engines,” SAE Paper No. 900820 1990
- Godrie, P. Zellat, M. “Simulation of Flow Field Generated by Intake Port-Valve-Cylinder Configurations-Comparison with Measurements and Applications,” SAE Paper No. 940521 1994
- Naitoh, K. Fujii, H. Urushihara, T. Takagi, Y. Kuwahara, K. “Numerical Simulation of the Detailed Flow in Engine Ports and Cylinder,” SAE Paper No. 900256 1990
- Trigui, N. Affes, H. Kent, J. C. “Use of Experimentally Measured In-Cylinder Flow Field at IVC as Initial Conditions to CFD Simulation of Compression Stroke in I.C. Engine - A Feasibility Study,” SAE Paper No. 940280 1994
- Khalighi, B. El Tahry, S. H. Haworth, D. C. Huebler, M. S. “Computation and Measurement of Flow and Combustion in a Four-Valve Engine with Intake Variations,” SAE Paper No. 950287 1995
- Kuo, T. Reuss, D. L. “Multidimensional Port-and-Cylinder Flow Calculations for the Transparent-Combustion-Chamber Engine,” 23 Engine Modeling ASME 1995 1995
- Lai, M. Kim, J. Cheng, C. Chui, G. Pakko, J. D. “Three-Dimensional Simulations of Automotive Catalytic Converter Internal Flow,” SAE Paper No. 910200 1991
- Wendland, D. W. Kreucher, J. E. Andersen, E. “Reducing Catalytic Converter Pressure Loss with Enhanced Inlet-Header Diffusion,” SAE Paper No. 952398 1995
- Kuo, T. Khalighi, B. “Numerical Study on Flow Distribution in T-Junctions and a Comparison with Experiment,” 23 Engine Modeling ASME 1995 1995
- Shuai, S. Wang, J. Zhuang, R. Chen, J. “Study on Flow Characteristics of Automotive Catalytic Converters with Various Configurations” SAE Paper 2000-01-0208 2000
- Cho, Y. Kim, D. Han, M. Joo, Y. Lee, J. Min, K. 1998 “Flow Distribution in a Close-Coupled Catalytic Converter,” SAE Paper No. 982552
- Sugiura, S. Ijuin, K. Yamada, T. Yaegashi T. “A Multi-Dimensional Numerical Method for Predicting Warm-Up Characteristic of Automobile Catalytic Converter Systems” SAE Paper 952413 1995
- Takeyama, S. Ishizawa, S. Yoshikawa, Y. Takagi, Y. “Gas Exchange Simulation Model for improving Charging Efficiency of 4-valve Internal Combustion Engine,” I.M.E. the First Conference of the Computers in Engine Technology 1987
- Kimura, S. Yokoyama, T. “Reduction of Intake Pulsation Noise by Reducing Noise Sources” JSAE Autumn Annual Meeting 1994
- Yoshizawa, K. Mori, K. Arai, K. Iiyama, A. “Numerical Analysis of Exhaust Gas Flow and Its Application for Lambda Control Improvement” 33-3 ASME Technical Conference 1999
- Zhao, F. Bai, L. Liu, Y. Chue, T. Lai, M. “Transient Flow Characteristic inside the Catalytic Converter of a Firing Gasoline Engine” SAE Paper No. 971014 1997
- Park, S. Kim, H. Cho, K. Kim, W. “An Experimental and Computational Study of Flow Characteristics in Exhaust Manifold and CCC (Close-Coupled Catalyst)” SAE Paper No. 980128 1998
- STAR-CD Version 3.05 Manual 1998
- Kays, W. M. et al. Convective Heat Mass Transfer 2nd 1980 243 McGraw-Hill
- Condie, G. K. McEligot, M. D. “Convective Heat Transfer for Pulsating Flow in the Takedown Pipe of a V-6 Engine” SAE Paper 950618 1995
- Imabeppu, S. Shimonosono, H. Yamamoto, S. “Analysis of Convective Heat Transfer in the Exhaust System of Gasoline Engines” JSAE Autumn Annual Meeting 1996
- Jayatilleka, C. L. “The Influence of Prandtl Number and Surface Roughness on the Resistance of the Laminar Sub-layer to Momentum and Heat Transfer” Progress in Heat and Mass Transfer 1 1969
- Mamiya, N. Hiraishi, M. Masuda, T. Ooki, A. “Thermal Fatigue Life Prediction of an Exhaust Manifold by Simulation” JSAE Autumn Annual Meeting 1999
- Lee. K. Shim, C. Kim, W. “Development of Dual Wall Air Gap Exhaust System” SAE Paper 2000-01-0205 2000
- Tamura, N. Matsumoto, S. Kawabata, M. Kojima, M. Machida, M. “The Development of an Automotive Catalyst using a Thin Wall (4 mil/400 cpsi) Substrate” SAE Paper 960557 1996
- Kikuchi, S. Hatcho S. Okayama, T. Inose, S. Ikeshima, K. “High Cell Density and Thin Wall Substrate for Higher Conversion Ratio Catalyst” SAE Paper 1999-01-0268 1999
- Nishizawa, K. Momoshima, S. Koga, M. Tsuchida, H. “Development of New Technologies Targeting Zero Emissions for Gasoline Engines” SAE Paper 2000-01-0890 2000