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Application Of Extension Theory In Misfire Fault Diagnosisof Gasoline Engines

机译：可拓理论在汽油机失火故障诊断中的应用

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摘要

A misfire fault diagnosis method in gasoline engines is proposed by extension theory. The extension diagnosis method is based on the matter-clement model and extended correlation function for the misfire fault diagnosis of gasoline engines. First, the matter-element models of the engine fault are built according to diagnostics derived from specialists' knowledge of practical experience and then, the fault types of misfire in engines can be directly identified by relation indices. The validity and reasonability of the proposed method is verified by the experimentation of EQ6102 engine. Diagnosis results show that the proposed method cannot only diagnose the main fault types of engines and can also detect useful information for future trends by the relation indices. This fault diagnosis method is easier and more practical than other traditional AI methods. Therefore, it will be favorable to diagnose the engine fault.
机译：利用可拓理论提出了一种汽油机失火故障的诊断方法。扩展诊断方法基于物质分解模型和扩展相关函数，用于汽油机失火故障诊断。首先，根据专家从实际经验中获得的诊断结果，建立发动机故障的物元模型，然后可以通过关系指标直接识别发动机失火的故障类型。通过EQ6102发动机的实验验证了该方法的有效性和合理性。诊断结果表明，所提出的方法不仅可以诊断发动机的主要故障类型，还可以通过关系指标检测出未来趋势的有用信息。这种故障诊断方法比其他传统的AI方法更容易，更实用。因此，有利于诊断发动机故障。

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