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http://dx.doi.org/10.15435/JILASSKR.2015.20.3.187

Schlieren, Shadowgraph, Mie-scattering Visualization of Diesel and Gasoline Sprays under GDCI Engine Low Load Condition  

Park, Stephen Sungsan (한국과학기술원 기계공학과)
Kim, Donghoon (한국과학기술원 항공우주공학과)
Bae, Choongsik (한국과학기술원 기계공학과)
Publication Information
Journal of ILASS-Korea / v.20, no.3, 2015 , pp. 187-194 More about this Journal
Abstract
In this study, three visualization methods, Schlieren, Shadowgraph, and Mie-scattering, were applied to compare diesel and gasoline spray structures. Fuels were injected into a high pressure/high temperature constant volume chamber under the same ambient pressure and temperature condition of low load in gasoline direct injection compression ignition (GDCI) engine. Two injection pressures (40 and 80 MPa), two ambient pressures (4.2 and 1.7 MPa), and two ambient temperatures (908 and 677 K) were use. The images from the different methods were overlapped to show liquid and vapor phases more clearly. It was found that the gasoline fuel is more appropriate to form a lean mixture.
Keywords
GDCI; Diesel spray; Gasoline spray;
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