Powertrain diagnosis has been demanded with growth & complexity of powertrain electronic control system and enforcement of law & regulation in the last decades. In regulation OBD II, requirement of misfire monitoring has been demanded much more strictly. A variety of diagnosis methods for misfire have been proposed and developed, however most of them either depend greatly on special or expensive sensors or suffer from the disturbance of vibration due to non-misfire reasons. One combination of Frequency Domain Analysis and Fuzzy Logic to perform the misfire diagnosis is proposed. It takes full advantage of property of frequency domain analysis and fuzzy logic, providing accurate and robust detection results, without adding additional hardware diagnosis instruments. Fast Fourier Transform is used to perform frequency domain analysis, which can abstract the specific frequency characteristics of misfire signals during overall engine crankshaft speed fluctuations directly and quickly, and fuzzy logic provides good trading off between significance and precision, which can reduce possible false misfire alarm caused by interruption of noise and disturbance of uneven road. The experiment on one four-cylinder engine proves that the method is effective.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Combined Frequency Domain Analysis and Fuzzy Logic for Engine Misfire Diagnosis


    Additional title:

    Sae Technical Papers


    Contributors:
    Wu, Haotian (author) / Huang, Xianan (author) / Ma, Xiping (author) / Xia, Zhenchun (author)

    Conference:

    SAE 2015 World Congress & Exhibition ; 2015



    Publication date :

    2015-04-14




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




    Misfire Detection Based on Engine Speed Time-Frequency Analysis

    Corti, Enrico / Serra, Gabriele / Minelli, Giorgio et al. | SAE Technical Papers | 2002


    Misfire detection based on engine speed time-frequency analysis

    Cavina,N. / Corti,E. / Minelli,G. et al. | Automotive engineering | 2002


    ENGINE MISFIRE DETECTION DEVICE

    HOZUKI TAKASHI / WADA SHUICHI / KODA TAKESHI | European Patent Office | 2020

    Free access

    Misfire Detection Based on Engine Speed Time-Frequency Analysis

    Cavina, N. / Corti, E. / Minelli, G. et al. | British Library Conference Proceedings | 2002


    Statistical engine misfire detection

    Stotsky, A A | SAGE Publications | 2007