This paper will focus on fuel flow analysis in nozzles, in particular, in the injection hole, a key component of Fuel Injection Equipment(FIE). Optimum controlled flow in the hole improves flow efficiency and atomization. To meet the emission regulations which will be introduced from the end of '90's to the 21st century, Diesel Engines require FIE to produce higher injection pressure which creates better atomization and higher utilization of air. But higher injection pressure results in increased pump driving torque, larger pump size and higher cost. We have studied the improvement in fuel flow characteristics of the nozzle, using an enlarged flow model and the theoretical analysis method. As a result, we have found that the cavitation, which occurs at the inlet of the hole, is affected by the configuration of the sac hole and injection hole. And, furthermore, the cavitation has a direct effect on the contraction and its recovery flow. The optimum designed nozzle will be an effective measure to create a fine spray under lower injection pressure, which will be cost competitive in the market and help engines meet regulations.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Flow Analysis in Nozzle Hole in Consideration of Cavitation


    Additional title:

    Sae Technical Papers


    Contributors:

    Conference:

    International Congress & Exposition ; 1997



    Publication date :

    1997-02-24




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




    Flow analysis in nozzle hole in consideration of cavitation

    Kato,M. / Kano,H. / Date,K. et al. | Automotive engineering | 1997


    Analysis Of Flow With Cavitation In Diesel Nozzle Hole

    Kato, M. / Kano, H. / Date, K. et al. | British Library Conference Proceedings | 1997


    Analysis of flow with cavitation in diesel nozzle hole

    Kato,M. / Kano,H. / Date,K. et al. | Automotive engineering | 1997


    Visualization of Cavitation Inside Nozzle Hole and Injected Liquid Jet

    Matsumura, Eriko / Senda, Jiro / Inagaki, R. et al. | SAE Technical Papers | 2015