基于声压原理的柴油发动机检测室噪声的测量、分析与治理

Noise Measurement,Analysis and Denoise of Diesel Engine Testing Chamber Based on Sound Pressure Principle

以某新建成的柴油发动机检测室为对象,基于声压原理,对检测室中存在的强噪声、高轰鸣声进行测量分析.通过对多工况、多测点测量获得的数据和声频谱等图形比较分析,找出产生强噪声、高轰鸣声的原因,提出了解决方案和措施,达到了降噪、消除轰鸣声目的,改善了现场运行人员工作环境.

Based on sound pressure principle, the noise measurement, analysis and denoise of a diesel engine performance testing chamber were presented. Firstly, comparative analysis of noise intensity and their frequency spectrum were measured and analyzed in detail in different operation status and multimeasurement points （place）. Then, the cause of strong noise and reverberation existing in the diesel engine performance testing chamber was found. Finally, some scheme and methods were put forward accordingly. The chamber＇s noise reduction and reverberation elimination were attained, and the environment condition of personnel were ameliorated.