吉林大学学报(工学版) ›› 2004, Vol. ›› Issue (3): 357-361.

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Simulation analysis of exhaust muffler with boundary element method

YUAN Zhaocheng, DING Wanlong, FANG Hua, GAO Zheng   

  1. College of Automotive Engineering, Jilin University, Changchun 130022, China
  • Received:2003-06-11 Online:2004-07-01

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Abstract: The acoustical behavior of a motorcycle exhaust muffler was simulated with the boundary element method.The results show that the boundary element cell modal is right and the calculation method is reasonable. The causes for the muffler attenuation trough was analyzed by the sound modal analysis and the sound pressure map analysis, and the improvement was put forward with the control measure of the long duct standing wave.This method is effictive to control muffler attenuation of the muffler structure which is Axis symmetry.Thus, a successful muffler design method is developed.

Key words: internal-combustion engine engineering, exhaust muffler, sound modal analysis, boundary element method

CLC Number: 

  • TK413.47
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