The Design and Analysis of Closed-Coupled Exhaust Manifold

Rang Shu Xu; Xiang Feng Yan; Ling Niu; Zhi Wei Dong

doi:10.4028/www.scientific.net/AMM.215-216.1241

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 215-216The Design and Analysis of Closed-Coupled Exhaust...

The Design and Analysis of Closed-Coupled Exhaust Manifold

Abstract:

The layout of closed-couple catalyst converter in internal combustion engine exhaust system is one of important way to reduce vehicle emission. CFD method based on finite volume method is adopted to numerical simulate flow distribution in the entrance of closed-coupled catalytic converter and applying business software of FLUENT to clarity the flow uniformity of inlet to ensure catalytic converter work efficiently and meet regulations. The flow field uniformity of entrance were studied and analyzed. Research finds that the shape of manifold has effect on dispersion of velocity in entrance and dispersion of velocity has a relatively strong correlation with pulsation flow. The flow reverse in junction deflect the air flow that flow into the entrance of closed-couple catalyst converter. Calculation results indicate that the uneven rate coefficient is 0.266 and volatility is 0.515 in the entrance of closed-couple catalyst.

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Periodical:

Applied Mechanics and Materials (Volumes 215-216)

Pages:

1241-1245

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.215-216.1241

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Online since:

November 2012

Authors:

Rang Shu Xu, Xiang Feng Yan, Ling Niu, Zhi Wei Dong

Keywords:

Catalyst, Exhaust Gas, Numerical Simulation, Velocity Distribution

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References

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