Spray Pattern Recognition for Multi-Hole Gasoline Direct Injectors Using CFD Modeling

2009-01-1488

04/20/2009

Event
SAE World Congress & Exhibition
Authors Abstract
Content
This paper describes a correlation study on fuel spray pattern recognition of multi-hole injectors for gasoline direct injection (GDi) engines. Spray pattern is characterized by patternation length, which represents the distance of maximum droplet concentration from the axis of the injector. Five fuel injectors with different numbers and sizes of nozzle holes were considered in this study. Experimental data and CFD modeling results were used separately to develop regression models for spray patternation. These regressions predicted the influence of a number of injector operating and design parameters, including injection system operating pressure, valve lift, injector hole length-to-diameter ratio (L/d) and the orientation of the injector hole. The regression correlations provided a good fit with both experimental and CFD spray simulation results. Thus CFD offers a good complement to experimental validation during development efforts to meet a desired injector spray pattern.
Meta TagsDetails
DOI
https://doi.org/10.4271/2009-01-1488
Pages
12
Citation
Das, S., Chang, S., and Kirwan, J., "Spray Pattern Recognition for Multi-Hole Gasoline Direct Injectors Using CFD Modeling," SAE Technical Paper 2009-01-1488, 2009, https://doi.org/10.4271/2009-01-1488.
Additional Details
Publisher
Published
Apr 20, 2009
Product Code
2009-01-1488
Content Type
Technical Paper
Language
English