【摘要】 对具有汽车尾气净化功能的消声器的消声性能和净化性能进行了较深入的研究。在理论上,利用矩阵变换的原理,建立了安装催化剂的双层摩擦穿孔声管的声场传递矩阵数学模型;利用已有的研究成果,推导出在考虑气流速度影响时的几种典型声学单元的声场传递矩阵;列出了排气噪声和废气含量测试结果,并进行了分析。更多还原

【Abstract】 It developed the exhaust muffler with the function of reducing noise and purifying, set up a mathematical model of sound field transformation matrix that double deck frictional perforated pipe was used to assemble depurator. With this model, it deducted the transformation matrixes of some topical sonic units effecting gas velocity. It gave the experiment results and analyses of exhaust noise and exhaust contents.更多还原