The Journal of Engine Research

The Journal of Engine Research

Experimental investigation on the effect of injection pressure and injector installation angle on the penetration of the gasoline port fuel injector using high speed imaging method

Authors
M. Nazari Chekoveri
A. Hajiali Mohammadi
S. M. Mirsalim
H. R. Fajri
Abstract
The development of spray is one of the important factors effecting the combustion of PFI engines. This research was carried out in order to investigate some of the spray characteristics from PFI injector. In this study, the injector flux was investigated by a mass method and equations for it were presented. The results showed that in the pressure interval (2 to 6 bar), the relation of flux with pressure is a quadratic polynomial. The linearity of the injector was investigated and the results of experiments and equations with the manufacturer's nominal value were less than the difference of 2%. Use the Shillerin Imaging method to get the geometry of the spray. Tip penetration depth was followed as a geometric characteristic. The images were processed by image processing in MATLAB software. Investigations showed changes in penetration depth with pressure injections. At a Certain time after the injection began, the depth of penetration increased with pressure. Also, the effect of injector angle on the depth of penetration of the spray was followed by a finding that a certain trend could not be proposed for it, but in some cases, the angle change would change the depth of penetration by 15 mm then vertical position.
Keywords
PFI injector
Schlieren Imaging
image processing
Tip Penetration
Injector Angle
The Journal of Engine Research
Volume 52, Issue 52 - Serial Number 52
Selected Papers of 2nd National Conference on Internal Combustion Engines (NCICE-2)
Autumn 2018
Pages 29-42

  • Receive Date 27 November 2022