Characteristics of Evaporating Diesel Spray: A Comparison of Laser Measurements and Empirical/Theoretical Predictions

Event
SAE World Congress & Exhibition
Authors Abstract
Content
The objective of the paper is to characterize the diesel spray under the ambient conditions relevant for direct injection (D.I.) diesel engines. The particular emphasis is on the comparisons between laser measurements and predictions by empirical correlations and theoretical analyses. The ultraviolet-visible laser absorption-scattering (LAS) imaging technique is employed to quantitively determine the spray/mixture properties of the diesel spray injected by a hole-type injector, in terms of spray tip penetration and spatial concentration distributions of liquid and vapor phase. The structure of evaporating spray is obtained and analyzed. Based on the penetration correlations in the literature, a non-dimensional analysis of the spray tip penetration data is carried out. The results indicate that a self-similar state of the evaporating fuel spray is achieved. The measured mean fuel concentration distribution along the spray axis is in good agreement with the predicted one by the quasi-steady momentum theory for the spray with constant mass flow rate.
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DOI
https://doi.org/10.4271/2009-01-0854
Pages
14
Citation
Gao, J., Nishida, K., Moon, S., and Matsumoto, Y., "Characteristics of Evaporating Diesel Spray: A Comparison of Laser Measurements and Empirical/Theoretical Predictions," SAE Int. J. Engines 2(1):805-818, 2009, https://doi.org/10.4271/2009-01-0854.
Additional Details
Publisher
Published
Apr 20, 2009
Product Code
2009-01-0854
Content Type
Journal Article
Language
English