| 基于爆发噪声信号的内燃机失火故障诊断研究 |
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| 引用本文： | 王华民,陈霞,安钢,樊新海.基于爆发噪声信号的内燃机失火故障诊断研究[J].内燃机工程,2004,25(1):47-50. |
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| 作者姓名： | 王华民 陈霞 安钢 樊新海 |
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| 作者单位： | 1. 装甲兵工程学院,北京,100072
2. 总装轻武器论证研究所 |
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| 基金项目： | 国防"十五"预研资助项目(41327030203) |
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| 摘 要： | 本文提出了一种利用爆发噪声诊断内燃机失火故障的新方法。通过高压进油管压力信号的分析,将爆发噪声信号以内燃机一个工作循环为周期分割成多段信号。采用重采样技术,使分段信号长度一致并保证在时域上对齐。用等高线图法对分段信号进行能量面积分析。实践证明该方法可以准确的诊断出多缸失火故障及失火气缸位置。
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| 关 键 词： | 内燃机 失火 爆发噪声 等高线图 故障诊断 |
| 文章编号： | 1000-0925(2004)01-047-04 |
I.C.Engine Misfire Fault Diagnosis Based on Explosive Noise Signal |
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| WANG Hua-min,CHEN Xia,AN Gang,FAN Xin-hai.I.C.Engine Misfire Fault Diagnosis Based on Explosive Noise Signal[J].Chinese Internal Combustion Engine Engineering,2004,25(1):47-50. |
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| Authors: | WANG Hua-min CHEN Xia AN Gang FAN Xin-hai |
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| Affiliation: | WANG Hua-min~1,CHEN Xia~2,AN Gang~1,FAN Xin-hai~1 |
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| Abstract: | A new method is presented to diagnose the engine misfire by analyzed explosive noise in this paper. Firstly, the explosive noise signal is divided into many segments corresponding to engine's circulation that confirmed by analyzed pressure signal of oil inlet pipe. Secondly, resample technique is used to make that segments have identical length and align in time-domain. At last, contour map method is used to analyze the power area of segments signals. Practices prove that this method is good for diagnosing the engine misfire and finding the cylinders where the misfire occurs precisely. |
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| Keywords: | I C Engine Misfire Explosive Noise Contour Map Fault Diagnosis |
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