In the modern GDI systems, the optimization of the fuel injection process is essential to prepare an air-fuel mixture capable to promote efficient combustion and reduce fuel consumption and pollutant emissions. A key feature for a better atomization is the fuel injection pressure. The increasing of the injection pressure is considered a good way for particle number (PN) reduction due to improved spray atomization, faster evaporation and better mixture formation.In this paper, a multi-hole GDI injector was tested to investigate the effects of very high injection pressures (IVHP), in addition to different ambient densities and temperatures, on the fuel spray morphology, in a cycle-resolved images analysis. Commercial gasoline was injected at the pressures ranging between 40.0 to 70.0 MPa, at gas densities varying between 1.12 to 11.5 kg/m3, and gas temperature up to 200°C. Sequences of liquid and vapor images of the injected fuel were captured by Mie-scattering and shadowgraph optical techniques on a high-speed C-Mos camera and the characteristic parameters of the jets, tip penetrations, cone-angles, and fuel spread were extracted for both the phases by a customized image-processing procedure developed in C#. The effects of the single parameters affecting the spray evolutions, remaining constant the residual parameters, are reported and analyzed.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Gasoline Fuel Sprays Characterization at Very-High Injection Pressures


    Weitere Titelangaben:

    Sae Technical Papers


    Beteiligte:
    Montanaro, A. (Autor:in) / Meccariello, G. (Autor:in) / Allocca, L. (Autor:in)

    Kongress:

    2019 JSAE/SAE Powertrains, Fuels and Lubricants ; 2019



    Erscheinungsdatum :

    19.12.2019




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




    Gasoline Fuel Sprays Characterization at Very-High Injection Pressures

    Montanaro, A. / Allocca, L. / Meccariello, G. | British Library Conference Proceedings | 2019


    High-Speed Imaging Studies of Gasoline Fuel Sprays at Fuel Injection Pressures from 300 to 1500 bar

    Wooldridge, Margaret / Medina, Mario / Fatouraie, Mohammad | SAE Technical Papers | 2018


    High-Speed Imaging Studies of Gasoline Fuel Sprays at Fuel Injection Pressures from 300 to 1500 bar

    Medina, Mario / Fatouraie, Mohammad / Wooldridge, Margaret | British Library Conference Proceedings | 2018


    Spray Characterization of Gasoline Direct Injection Sprays Under Fuel Injection Pressures up to 150 MPa with Different Nozzle Geometries

    Yamaguchi, Akichika / Helmantel, Arjan / Karrholm, Fabian Peng et al. | SAE Technical Papers | 2019


    Spray Characterization of Gasoline Direct Injection Sprays Under Fuel Injection Pressures up to 150 MPa with Different Nozzle Geometries

    Yamaguchi, Akichika / Koopmans, Lucien / Helmantel, Arjan et al. | British Library Conference Proceedings | 2019