某柴油机噪声源识别及分析

Analysis and Identification of Noise Source for Diesel Engine

根据声强法对某柴油机进行了声强测量研究,绘制出发动机的声强云图,得到了整机的噪声分布情况,确定了该机在不同工况下的主要噪声源,并对其噪声辐射特性进行了分析,为整机降噪研究奠定了良好的基础。

The noise source of a diesel engine of a vehicle was identified by the technique of sound intensity,the sound intensity contour map of the engine was drawn,the noise distribution of the engine was gotten.Moreover,the paper located the noise sources in different working conditions and analyzed the noise radiation characteristic of the main noise source.The work presented in this paper lays the foundations for reducing noise of the engine.