Acoustic Matching Simulation of Muffler with Hybrid Approach

Paper #:
  • 2011-01-1516

Published:
  • 2011-05-17
Citation:
Zheng, S., Kang, Z., and Lian, X., "Acoustic Matching Simulation of Muffler with Hybrid Approach," SAE Technical Paper 2011-01-1516, 2011, https://doi.org/10.4271/2011-01-1516.
Pages:
6
Abstract:
Different limitations exist in the practical application of one-dimensional and three-dimensional methods on the acoustic simulation of muffler respectively. Thus, a hybrid one/three-dimensional approach is developed in present paper to carry out the acoustic simulation of muffler matching with the engine. The acoustic source characteristics of engine are computed with one-dimensional methods, and acoustic four pole parameters of muffler are computed with three-dimensional methods, respectively. And, the insertion loss of muffler is finally calculated. The insertion loss of a muffler equipped with Selective Catalytic Reduction (SCR) in a heavy duty vehicle is simulated. The numerical results agree well with the experimental results, which verifies the reliability and accuracy of the present approach.
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