涡轮增压发动机进气消声器设计与声学性能数值分析

刘丽媛;季振林

振动与冲击 ›› 2011, Vol. 30 ›› Issue (10) : 193-196.

PDF(1737 KB)
PDF(1737 KB)
振动与冲击 ›› 2011, Vol. 30 ›› Issue (10) : 193-196.
论文

涡轮增压发动机进气消声器设计与声学性能数值分析

  • 刘丽媛; 季振林
作者信息 +

Design of turbocharged engine intake silencer and numerical analysis of acoustic attenuation performance

  • LIU Li-yuan; JI Zhen-lin
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文章历史 +

摘要

根据涡轮增压发动机进气噪声特性,设计两套进气消声器,建立进气消声器声学性能计算的有限元模型。使用贴附有吸声材料穿孔管声阻抗的修正公式和硅酸铝岩棉的声学特性参数,有限元法计算获得的消声器传递损失与实验测量结果吻合良好。最后分析组合结构对进气消声器声学性能的影响。

Abstract

According to the characteristics of turbocharged engine intake noise, two kinds of intake silencers are designed, and the finite element models for the intake silencers were created. By using the corrected expres-sion of the acoustic impedance of perforation in contact with fibrous material and the acoustic characteristic pa-rameters of aluminum silicate, transmission loss of the silencers is predicted, and the FEM predictions agree rea-sonably well with experimental results. Finally, the effects of combined structure on the acoustic attenuation per-formance of intake silencers are analyzed.

关键词

涡轮增压发动机 / 进气消声器 / 声学性能 / 数值分析 / 实验测量

Key words

turbocharged engine / intake silencer / acoustic characteristics / numerical analysis / experimental measurement

引用本文

导出引用
刘丽媛;季振林. 涡轮增压发动机进气消声器设计与声学性能数值分析[J]. 振动与冲击, 2011, 30(10): 193-196
LIU Li-yuan;JI Zhen-lin. Design of turbocharged engine intake silencer and numerical analysis of acoustic attenuation performance[J]. Journal of Vibration and Shock, 2011, 30(10): 193-196

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