Abstract: The noise performance of the intake system becomes a key technical index. The resonant cavity structure can optimize the acoustic performance of the intake system of passenger cars. By dividing the cavity and adding muffler holes on the main road, the amplitude of muffler and frequency band of the cavity can be improved, and the structure optimization and muffler effect of the cavity can be analyzed to achieve the purpose of optimizing the noise performance of the intake system and improve the satisfaction of the noise sense of passenger car customers.

Key words: Resonators; Silencing holes; Diaphragms; Transmission losses

摘要： 进气系统噪声性能成为一个关键性技术指标，谐振腔结构可以优化乘用车进气系统的声学性能。通过对谐 振腔隔开分腔、在主管路上增加消音孔可以提高谐振腔的消声幅值、增宽谐振腔的消声频带，对谐振腔结构优化以 及消声效果分析，以达到进气系统噪声性能优化的目的，提升乘用车客户噪声感官的满意度。

关键词: 谐振腔；消音孔；隔板；传递损失