摩托车排气消声器声学性能研究及结构改进  

Study on the Acoustic Performance of Motorcycle Exhaust Muffler and Structure Improvement

作　　者：王震武[1] 毛文刚[1] 

机构地区：[1]国家摩托车质量监督检验中心

出　　处：《摩托车技术》2013年第6期37-41,共5页Motorcycle Technology

摘　　要：对某款125mL两轮摩托车消声器,采用Pro/E三维造型软件建立模型,运用SYSNOISE声学分析软件对消声器3个腔室进行消声性能仿真和分析,得出了各个腔室在低频、中频、高频时的消声特点,为消声器内部结构的优化和设计提出了科学合理的降噪策略,改进后的排气消声器经过试验验证,加速噪声值已经低于国家标准规定的77dB(A)。This paper introduces a model （established with 3-Dimension Pro/E and SYSNOISE softwarcs） for the analysis on the acoustic performance of a 125 mL two-wheel motorcycle. An analytic test for noise abatement effect is conducted for 3 chambers of a muffle at high, medium, and low-frequency. Based on the testing results, the suggestions for the optimization and redesign of the internal structure of muffler are put forward. The testing results show that the noise of redesigned muffler during the acceleration has met the requirements in national standard.

关 键 词：排气消声器 声学性能 频率 仿真 

分 类 号：U483[交通运输工程—载运工具运用工程] TB535.2[交通运输工程—道路与铁道工程]