The insertion loss of this exhaust muffler is calculated after the muffler model is built and the engine model is validated,the calculated result compares well with the measured one.

• 通过分析试验得到消声器的消声频率特性,建立消声器模型并对发动机模型进行验证后,计算了排气消声器的插入损失,取得了计算结果与试验值吻合的良好效果。