| 瞬态转速分析及其在发动机气缸故障诊断中的应用 |
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| 引用本文： | 白广来,孟宪尧,M.F White.瞬态转速分析及其在发动机气缸故障诊断中的应用[J].大连海事大学学报(自然科学版),2002,28(z1):56-60. |
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| 作者姓名： | 白广来 孟宪尧 M.F White |
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| 作者单位： | 大连海事大学自动化研究所,辽宁,大连,116026,Marine Machinery Inst Norwegian Univ of Science & Technology Trondheim,7491 Norway |
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| 摘 要： | 发动机气缸内的压力和气压产生的扭矩是一个非常重要但运行时很难得到的参数.为此,描述了一种通过测量和分析发动机的瞬态转速来监测气缸内的压力和压力扭矩的方法.在发动机模型和测量的瞬态转速信号的基础上,经过傅立叶变换和傅立叶逆变换,可得出发动机各缸的气压扭矩的波动波形.根据气压扭矩振动波形可监视发动机气缸内的工作状态和对故障气缸做出诊断.
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| 关 键 词： | 发动机 瞬态转速 故障诊断 |
Transient speed analysis and its application to diagnosis of engine cylinder faults |
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| Abstract.Transient speed analysis and its application to diagnosis of engine cylinder faults[J].Journal of Dalian Maritime University,2002,28(z1):56-60. |
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| Authors: | Abstract |
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| Abstract: | The pressure in a cylinder and its contribution to the engine torque output are parameters of fun-damental importance, but difficult to obtain during engine operation. The objective of this paper is to de-scribe a method of monitoring engine pressure and pressure torque by measuring and analysing engine tran-sient speed. Based on a lumped model of engine dynamics, using Fast Fourier Transform and Inverse FastFourier Transform, the pressure torque fluctuation waveform can be obtained. This waveform can be usedto monitor cylinder condition and to diagnose faults in cylinders |
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| Keywords: | engine transient speed faults diagnosis |
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