柴油机表面噪声的声强测量与分析  

Sound Intensity Measurement for Noise Source Identification in Diesel Engine

作　　者：韩军[1] 郝志勇[1] 刘月辉[1] 

机构地区：[1]天津大学,天津300072

出　　处：《汽车工程》2003年第3期272-274,共3页Automotive Engineering

摘　　要：依据声强法的测量原理 ,对一台车用增压柴油机进行了声强测量研究 ,得到了该发动机整机噪声分布的声强云图 ,确定了该机的主要噪声源位置。用振动速度法对声强法测量的结果进行了验证 。The sound intensity measurement is carried out on a typical supercharged diesel engine of a vehicle.Then a sound intensity contour map for noise distribution in the engine is obtained and the main noise sources are located.The result of sound intensity measurement is also verified by vibration velocity method with good agreement.

关 键 词：柴油机 表面噪声 声强测量 噪声源 声强云图 振动速度法 

分 类 号：TK427[动力工程及工程热物理—动力机械及工程]