| 柴油机曲轴速度变化的频谱分析 |
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| 引用本文： | 林亮,李育学,李京. 柴油机曲轴速度变化的频谱分析[J]. 船海工程, 2008, 37(1): 80-83 |
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| 作者姓名： | 林亮 李育学 李京 |
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| 作者单位： | 1. 海军工程大学动力工程学院,武汉,430033
2. 海军驻兴平地区军事代表室,西安,710000 |
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| 摘 要： | 使用光电转速传感器,通过计算其感应器内部时钟的脉冲测量曲轴的速度变化,分析低谐波转速变化能过滤出由曲轴的动力响应产生的失真,根据这些谐波携带的信息建立起测量数据和发动机平均气压转矩之间的关系,从而发现故障并且确定不良的气缸.
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| 关 键 词： | 曲柄轴 频谱分析 发动机诊断 柴油机 曲轴 速度变化 频谱分析 Diesel Engine Variation Speed Spectrum Analysis Frequency 气缸 故障 发现 关系 转矩 气压 发动机 测量数据 信息 低谐波 失真 |
| 文章编号： | 1671-7953（2008）01-0080-04 |
| 收稿时间： | 2007-06-28 |
| 修稿时间： | 2007-09-03 |
Frequency Spectrum Analysis for Speed Variation of the Diesel Engine's Crankshaft |
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| LIN Liang,LI Yu-xue,LI Jing. Frequency Spectrum Analysis for Speed Variation of the Diesel Engine's Crankshaft[J]. Ship &Ocean Engineering, 2008, 37(1): 80-83 |
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| Authors: | LIN Liang LI Yu-xue LI Jing |
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| Abstract: | The speed variation of the crankshaft may be easily and accurately measured using a shaft encoder and counting the pulses of the internal clock of the data acquisition system. Analyzing only the lower harmonic orders of the speed variation spectrum can filter out the distortions produced by the dynamic response of the crankshaft. The information carried by these harmonic orders permits to establish correlations between measurements and the average gas pressure torque of the engine, and to detect malfunctions and identify faulty cylinders. |
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| Keywords: | crankshaft frequency spectrum analysis diesel engine diagnosis |
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