Open AccessResearch on Computational Data Simulation of Automobile Engine Exhaust Muffler Performance
Author(s) -
SaiJun Zhong
Publication year - 2020
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1533/4/042043
Subject(s) - muffler , attenuation , insertion loss , transmission loss , acoustic attenuation , noise reduction , noise (video) , computer science , acoustics , automotive engineering , reduction (mathematics) , transfer function , engineering , physics , mathematics , electrical engineering , telecommunications , geometry , artificial intelligence , optics , image (mathematics)
In this paper, the transfer matrix method is used to simulate and calculate the insertion loss of muffler. This simulation method can evaluate the acoustic characteristics of the exhaust system. After deriving the transfer matrix of six kinds of silencing units, it is applied to the calculation of insertion loss. In this paper, a mathematical model of noise attenuation is established to analyze the relationship between the characteristics of muffler and acoustic attenuation. We can take the noise reduction as the objective function to optimize the muffler design. The mathematical model of pressure loss can be used to evaluate the aerodynamic performance of muffler.