小型柴油机噪声测量与声源识别技术

Noise Measurement and Identification in Small Engine

论述了内燃机噪声源识别的主要方法,并在一台小型农用柴油机上运用表面声强等方法,作了噪声测量、数据处理和声源识别分析,找出了主声源部件,为整机降噪研究打下了良好的基础。

The general methods for identification of noise source in internal combustion engine are expounded.The measurement,test data processing and identification analysis of noise source are made by using surface acoustic intensity and others.Therefore,the main noise sources are found,which will play a good fundament on the study of noise reduction in engine.