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http://dx.doi.org/10.15435/JILASSKR.2018.23.1.30

Prediction of Diesel Fuel Spray Characteristics in Compression Ignition Engine Cylinder by Intake Humidification  

Min, Se Hun (공주대학교 기계공학과 대학원)
Suh, Hyun Kyu (공주대학교 기계자동차공학부)
Publication Information
Journal of ILASS-Korea / v.23, no.1, 2018 , pp. 30-35 More about this Journal
Abstract
The objective of this study is to predict numerically the effect of intake humidification on the injected diesel fuel spray characteristics in a compression ignition engine. In this work, Wave model and Ducowicz model were applied as the break-up model and evaporation model, respectively. The amount of water vapor for the humidification was changed from 0% to 30% of injected fuel mass. The number of applied meshes was generated from 49,000 to 110,000. At the same time, the results of this work were compared in terms of spray tip penetration, SMD and equivalence ratio distributions. It was found that the cylinder temperature and cylinder pressure were decreased with increasing water vapor mass by vaporization latent heat and specific heat, however, the difference was very small. So, the spray tip penetration was not different by water vapor mass. Also, higher equivalence ratio distributions were observed with increasing water vapor mass by the improvement of fuel atomization.
Keywords
Break-up; Collision effect; Equivalence ratio; Humidification; Spray tip penetration; SMD;
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Times Cited By KSCI : 1  (Citation Analysis)
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