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Visualization and Numerical Analysis of Non-evaporating Spray with a Swirl-Type GDI Injector  

원영호 (울산대학교 기계자동차공학부)
강수구 (울산대학교 대학원)
Publication Information
Transactions of the Korean Society of Automotive Engineers / v.11, no.4, 2003 , pp. 22-28 More about this Journal
Abstract
Predictions of the fuel spray dispersion and mixing processes are very important to improve the fuel consumption and exhaust emissions in GDI engines. Numerical and experimental analysis of the sprays with a swirl injector have been conducted. A numerical analysis is carried out using KIVA-II code with modified spray models. Experimental measurements are performed to show the global spray images and the local images near nozzle tip using laser sheet visualization technique. Computed and measured spray characteristics such as spray width, tip penetration are compared, and good agreements can be achieved. The spray head vortex is stronger as the injection pressure increases, but numerical calculations cannot show the head vortex properly.
Keywords
GDI swirl injector; Spray modeling; Spray visualization; Gasoline direct injection engine;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
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