A methodology has been developed by the authors, in which non-intrusive measurements (engine block vibration) are used for diagnostic purposes of combustion process in Diesel engines. A previous paper of the authors has been devoted to demonstrate the direct relationship between in-cylinder pressure and accelerometer signals, when the vibration transducer is placed in sensitive location. Moreover, in the engine block vibration a frequency band in which such a relationship is very strong has been selected.The aim of this work is to provide a deeper insight into the effects of injection parameters on engine block vibration, in order to investigate the possibility of detecting modification of the in-cylinder pressure evolution by means of the accelerometer signal with the final objective of optimizing the combustion process by means of non-intrusive transducer.In the paper, the experimental apparatus is at first described; then, the processing technique is presented and results are reported and discussed concerning different settings of injection parameters and different values of engine speed and load.


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    Title :

    Block Vibration Measurements for Combustion Diagnosis in Multi-Cylinder Common Rail Diesel Engine


    Additional title:

    Sae Technical Papers


    Contributors:
    Recco, E. (author) / Arnone, L. (author) / Boni, M. (author) / Chiavola, O. (author) / Conforto, S. (author) / Manelli, S. (author)

    Conference:

    SAE World Congress & Exhibition ; 2009



    Publication date :

    2009-04-20




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




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