| 摩托车发动机的噪声源识别 |
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| 引用本文： | 李景渊.摩托车发动机的噪声源识别[J].摩托车技术,2012(3):41-43. |
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| 作者姓名： | 李景渊 |
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| 作者单位： | 重庆车辆检测研究院国家摩托车质量监督检验中心（重庆） |
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| 摘 要： | 在对某款摩托车发动机噪声源识别试验中，通过声强测量发现，曲轴箱体的表面辐射噪声是主要噪声源，但却不能确定该噪声源的成因。在综合应用了共振频率分析、分别运行法和频谱分析法等噪声源识别方法后，最终发现该噪声源来自发动机的正时链轮和链条的冲击噪声，并发现其位置与声强等高线指示的声源位置并不一致。
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| 关 键 词： | 噪声源识别 声强 正时链轮 |
Identification of Noise Source of Motorcycle Engine |
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| Li Jingyuan.Identification of Noise Source of Motorcycle Engine[J].Motorcycle Technology,2012(3):41-43. |
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| Authors: | Li Jingyuan |
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| Institution: | Li Jingyuan |
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| Abstract: | This paper introduces the method of identifying the noise source in motorcycle engine. Firstly,we find the surface-radiated noise of crankshaft case is the main noise source through sound intensity measurement.Then we adopt resonant frequency analysis and spectral analysis to further identify source of noise and find that the noise is generated by the impact of timing chain wheel and chains.And the real noise position is different with that indicated by the sound intensity contour. |
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| Keywords: | Identification of noise source Sound intensity Timing chain wheel |
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