| 穿孔板在降低某6缸柴油机油底壳噪声中的应用 |
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| 引用本文： | 刘新华,刘亚君,苏志宵,杨建绩.穿孔板在降低某6缸柴油机油底壳噪声中的应用[J].车用发动机,2009(6). |
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| 作者姓名： | 刘新华 刘亚君 苏志宵 杨建绩 |
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| 作者单位： | 中国北方发动机研究所,山西,大同,037036 |
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| 摘 要： | 采用穿孔板制作局部隔声罩,用于降低某6缸柴油机油底壳的噪声辐射。通过对该柴油机油底壳的辐射噪声进行频谱分析,针对其噪声特点,设计了用于油底壳的局部隔声罩。试验结果表明,实测平均声压级降低了1.0 dB,吸声降噪效果明显。
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| 关 键 词： | 柴油机 噪声控制 噪声测量 穿孔板 声压 |
The Application of Perforation Plate in Reducing Oil Sump Noise of Some 6-cylinder Diesel Engine |
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| LIU Xin-hua,LIU Ya-jun,SU Zhi-xiao,YANG Jian-ji.The Application of Perforation Plate in Reducing Oil Sump Noise of Some 6-cylinder Diesel Engine[J].Vehicle Engine,2009(6). |
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| Authors: | LIU Xin-hua LIU Ya-jun SU Zhi-xiao YANG Jian-ji |
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| Institution: | LIU Xin-hua,LIU Ya-jun,SU Zhi-xiao,YANG Jian-ji(China North Engine Research Institue,Datong 037036,China) |
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| Abstract: | The perforation plate was made into local sound insulation enclosure.to reduce the oil sump noise of some 6-cylinder engine.By the frequency spectrum analysis of radiated noise,the partial acoustic enclosure of oil sump was designed in accordance with the noise features.The results show that the average sound pressure level decreases by 1.0 dB(A),which testifies the good absorption effect. |
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| Keywords: | diesel engine noise control noise measurement perforation plate sound pressure |
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