程市，钱叶剑，罗琳

(合肥工业大学 机械与汽车工程学院,安徽 合肥 230009)

摘要：论文分析了进气噪声的产生机理，针对原机各阶次噪声出现的噪声尖点，找出了对应的振动频率。利用正交试验对空滤器的扩张比（容积恒定）、Helmholtz谐振腔和1/4波长管消声元件的结构参数进行综合优化设计，最大限度降低进气噪声。结果表明：基于正交试验得到的消声元件组合方案的进气插入损失最大（61.45dB），各阶次噪声均在阶次噪声限值以下，提升了进气消声系统的开发效率。

关键词：进气消声元件；阶次噪声；插入损失；正交试验

Abstract: This paper analyzed the intake noise generating mechanism.  The noise cusp corresponding to vibration frequencies is found out for each order noise. To minimize the intake noise, structural parameters of intake silencer components were designed and optimized by using orthogonal experiment, such as expansion ratio of air-filter (constant volume), Helmholtz resonator and 1/4 wave length tube. Results showed that each order noise of the optimal combination scheme was under the limit order noise, and the intake insertion loss reached the maximum of 61.45dB. The orthogonal experiment method can improve the efficiency of intake noise elimination system.

    Keywords：Intake Silencer Components； Order Noise； Insertion Loss； Orthogonal Experiment