The effects of injection pressure and swirl ratio on the in-cylinder soot oxidation are studied using simultaneous PLIF imaging of OH and LII imaging of soot in an optical diesel engine. Images are acquired after the end of injection in the recirculation zone between two adjacent diesel jets. Scalars are extracted from the images and compared with trends in engine-out soot emissions. The soot emissions decrease monotonically with increasing injection pressure but show a non-linear dependence on swirl ratio. The total amount of OH in the images is negatively correlated with the soot emissions, as is the spatial proximity between the OH and soot regions. This indicates that OH is an important soot oxidizer and that it needs to be located close to the soot to perform this function. The total amount of soot in the images shows no apparent correlation with the soot emissions, indicating that the amount of soot formed is a poor predictor of the emission trends.


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    Titel :

    Simultaneous PLIF Imaging of OH and PLII Imaging of Soot for Studying the Late-Cycle Soot Oxidation in an Optical Heavy-Duty Diesel Engine


    Weitere Titelangaben:

    Sae Int. J. Engines


    Beteiligte:
    Micó, Carlos (Autor:in) / Richter, Mattias (Autor:in) / Olofsson, Nils-Erik (Autor:in) / Bengtsson, Per-Erik (Autor:in) / Lind, Ted (Autor:in) / Li, Zheming (Autor:in) / Andersson, Öivind (Autor:in)

    Kongress:

    SAE 2016 World Congress and Exhibition ; 2016


    Erschienen in:

    Erscheinungsdatum :

    05.04.2016


    Format / Umfang :

    10 pages




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




    Simultaneous PLIF Imaging of OH and PLII Imaging of Soot for Studying the Late-Cycle Soot Oxidation in an Optical Heavy-Duty Diesel Engine

    Lind, Ted / Li, Zheming / Micó, Carlos et al. | British Library Conference Proceedings | 2016




    Soot and Wear in Heavy Duty Diesel Engines

    Mainwaring, Robert | SAE Technical Papers | 1997


    Soot and Wear in Heavy Duty Diesel Engines

    Mainwaring, R. / Society of Automotive Engineers | British Library Conference Proceedings | 1997