Effect of nozzle geometry on atomization of transient spray from port fuel injector

Mohamed Esmail, Nobuyuki Kawahara, Eiji Tomita, Mamoru Sumida

Research output: Contribution to conferencePaper

2 Citations (Scopus)

Abstract

The present paper reports an experimental investigation of the effect of nozzle geometry of port fuel injector PFI on exit flow velocity, the stability of primary spray behavior and spray droplet size. Several types of PFI with were tested. The investigation of exit flow velocity and stability (wavelength) of spray structure was performed using an ultra high-speed video camera (max. camera speed 1Mfps) with a long-distance microscope (whole image). The visualized experiments were carried out in a closed chamber at the atmospheric pressure. With back-lighting, the time-series images of the spray behavior were obtained. Using ultra high-speed camera with long-distance microscope and Barlow lens, droplet diameter could be visualized with high temporal resolution (magnified image). Experimental results of average exit velocity compared with NOZZLE FLOW model where experimental results of stability and droplet diameter compared with KH-RT breakup model. Experimental investigation showed that exit velocity, droplet diameter and stability (wavelength) influence by nozzle geometry.

Original languageEnglish
Pages429-436
Number of pages8
Publication statusPublished - Dec 1 2008
Event7th International Conference on Modeling and Diagnostics for Advanced Engine Systems, COMODIA 2008 - Sapporo, Japan
Duration: Jul 28 2008Jul 31 2008

Other

Other7th International Conference on Modeling and Diagnostics for Advanced Engine Systems, COMODIA 2008
CountryJapan
CitySapporo
Period7/28/087/31/08

Keywords

  • Cavitation
  • Droplet diameter
  • Port fuel injector
  • Spray
  • Wavelength

ASJC Scopus subject areas

  • Automotive Engineering
  • Control and Systems Engineering
  • Modelling and Simulation

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  • Cite this

    Esmail, M., Kawahara, N., Tomita, E., & Sumida, M. (2008). Effect of nozzle geometry on atomization of transient spray from port fuel injector. 429-436. Paper presented at 7th International Conference on Modeling and Diagnostics for Advanced Engine Systems, COMODIA 2008, Sapporo, Japan.