摘要
某车型在减速2500r/min左右时存在低频轰鸣抱怨和怠速扑扑声抱怨。通过噪声源识别,发现其来自排气系统,通过WAVE对排气系统后消声器进行仿真优化后,车内噪声在2500r/min左右降低了2dB(A)。
There is low-frequency booming noise around 2 500 r/min in one vehicle when decelerating. The booming noise mainly comes from exhaust system through noise source identification.The rear muffler of the exhaust system is optimized by Wave. The interior noise reduces 2 d B( A) around 2 500 r/min.
引文
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