发动机转速对噪声影响的探讨  

Probing into Influences of Engine Speed on Noise

作　　者：马锐[1] 宋雪[1] 魏少东[1] 张莉娜[1] 

机构地区：[1]长安大学工程机械学院

出　　处：《工程机械》2009年第3期34-37,共4页Construction Machinery and Equipment

摘　　要：发动机噪声是工程机械的主要噪声源,为提高工程机械总体噪声控制水平,对发动机的噪声进行试验和分析,分析噪声的产生机理,阐述发动机噪声随转速变化的规律,并结合某型号发动机噪声频谱试验结果,验证了发动机转速对噪声的影响。建议进行工程机械发动机选型时,在满足其它性能的情况下,应尽量选用额定转速较低的发动机,来降低整机噪声。Engine noise is the main noise resource in construction machinery.In order to increase overall noise control level of construction machinery,engine noise is tested and analyzed and the generating mechanism of noises is analyzed.Regularity of engine noise variation with the speed is described.In association with the test results of noise spectrum of an engine,influences of engine speed on noise are inspected.It is suggested that engines with as low rated speeds as possible should be selected to reduce the noise level of basic machines.

关 键 词：工程机械 发动机 噪声 频谱分析 

分 类 号：TB533[理学—物理]