基于声强法识别柴油机表面辐射噪声源的研究  

Study on Surface Noise Source Identification for Diesel Engine Using Sound Intensity Method

作　　者：王之东[1] 沈颖刚[1] 毕凤荣[2] 

机构地区：[1]昆明理工大学交通工程学院,昆明650224 [2]天津大学机械工程学院,天津300072

出　　处：《噪声与振动控制》2008年第5期182-184,共3页Noise and Vibration Control

摘　　要：采用声强测量法对柴油机进行表面辐射噪声的测量,利用声强分布云图找到柴油机主要噪声源来自于气门室罩、油底壳、增压器和高压油泵。计算它们对整机噪声声功率的贡献,为降低该型柴油机的表面辐射噪声提供有效的参考依据。The surface noise of diesel engines was measured by using the sound intensity method. Using the data of contour of the sound intensity, the main noise sources of diesel engine, oil pan, booster and high pressure oil pump, were identified. Their contributions to the noise power were analyzed. Based on the analysis, some effective reference data was provided for reducing this type of diesel engine＇ s noise.

关 键 词：声学 声强 柴油机 噪声源 

分 类 号：U464[机械工程—车辆工程]