| 基于排气噪声EMD的柴油机失火故障诊断 |
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| 引用本文： | 樊新海,安钢,张传清,王凯.基于排气噪声EMD的柴油机失火故障诊断[J].内燃机工程,2010,31(1). |
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| 作者姓名： | 樊新海 安钢 张传清 王凯 |
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| 作者单位： | 装甲兵工程学院 机械工程系,北京,100072 |
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| 基金项目： | 军队维改项目(2007WG09) |
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| 摘 要： | 针对坦克柴油机失火故障诊断问题,在实车上模拟了失火故障,应用EMD对不同状态下的排气噪声信号进行了经验模态分解,利用Hilbert变换求取了主固有模态分量(IMF)的瞬时频率函数,以其围绕周期性排气噪声基频的波动方差和平均穿越率为特征参数,建立了一种诊断柴油机失火故障的方法。应用结果表明了诊断方法的可行性。
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| 关 键 词： | 内燃机 柴油机 经验模态分解 排气噪声 失火 故障诊断 |
Misfire Fault Diagnosis for Diesel Engine Based on EMD of Exhaust Noise |
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| FAN Xin-hai,AN Gang,ZHANG Chuan-qing,WANG Kai.Misfire Fault Diagnosis for Diesel Engine Based on EMD of Exhaust Noise[J].Chinese Internal Combustion Engine Engineering,2010,31(1). |
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| Authors: | FAN Xin-hai AN Gang ZHANG Chuan-qing WANG Kai |
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| Affiliation: | Department of Mechanical Engineering/a>;Academy of Armored Forces Engineering/a>;Beijing 100072/a>;China |
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| Abstract: | In view of misfire fault diagnosis for diesel engine,the misfire fault in actual vehicle was simulated,the exhaust noise signals in different conditions were analyzed by using empirical mode decomposition(EMD),and the instantaneous frequency function of main intrinsic mode fraction(IMF) was obtained by Hilbert transform.A diagnosis method for misfire fault of diesel engine was proposed by using the fluctuation variance and average transcendental ratio of instantaneous frequency function against the base fre... |
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| Keywords: | IC engine diesel engine empirical mode decomposition(EMD) exhaust noise misfire fault diagnosis |
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