某乘用车排气系统啸叫成因分析

Verification and Optimization of the Whistle Caused by Exhaust System

某乘用车开发过程中,发现三档全油门加速工况车内可听到尖锐啸叫声,通过噪声试验、气密试验、调整内部结构、冷流台架试验等方法确定了啸叫位置,为解决同类问题提供参考。

During the development of a car,it was found that a whistle can be heard in the car during the 3 WOT. The structure caused this noise was determined by noise test,air-tight test,adjustment of internal structure one by one,cold flow bench test and other methods,and the exhaust system optimization scheme is proposed. provides a reference for solving similar problems.