中文摘要：

以某车型车内噪声声压级为目标，以单一源求逆法辨识排气噪声体积加速度，并测试排气口到车内噪声目标点的声学传递函数。计算排气管口通过空气传递路径到车内噪声的贡献量，得知任发动机1730rpm附近排气噪声的2阶激励频率是车内噪声的主要贡献源，此时车内噪声主要是排气噪声过大引起的。增加车辆的吸隔音措施效果小明显，应优化排气管消声器以降低排气噪声。实验验证了分析结果。

英文摘要：

Analysis of noise transfer path from exhaust noise source to vehicle＇ s interior position was carried out based on exhaust volume acceleration estimation using single path inversion method. The acoustic transfer function from the exhaust outlet to the vehicle＇ s internal objective points was tested, and the noise contribution of the exhaust to the internal noise was calculated. It was found that the exhaust noise with the second order excitation frequency at the engine speed 1730rpm is the main noise source of the vehicle＇ s interior noise, and the high sound pressure level of the interior noise is induced by the overlarge volume acceleration of the exhaust instead of the transfer path function from the exhaust orifice to vehicle＇ s interior objective points. Thus, to reduce the exhaust noise, the exhaust silencer should be optimized. By measuring and comparing the sound pressure levels at driver＇ s right ear with and without exhaust noise insulation respectively, this conclusion was validated.