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Numerical Analysis of the Exhaust Gas Flow and Heat Transfer in a Close-Coupled Catalytic Converter System During Warm-Up
ISSN: 0148-7191, e-ISSN: 2688-3627
Published March 05, 2001 by SAE International in United States
Annotation ability available
Event: SAE 2001 World Congress
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.
CitationYoshizawa, 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.
SAE 2001 Transactions Journal of Fuels and Lubricants
Number: V110-4 ; Published: 2002-09-15
Number: V110-4 ; Published: 2002-09-15
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