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http://dx.doi.org/10.15435/JILASSKR.2018.23.1.22

Study on Macroscopic Spray and Spray Pattern Characteristics of Gasoline Direct Injection Injector for the Variation of Injection Pressure  

Park, Jeonghyun (전남대학교 일반대학원 기계공학과)
Park, Suhan (전남대학교 기계공학부)
Publication Information
Journal of ILASS-Korea / v.23, no.1, 2018 , pp. 22-29 More about this Journal
Abstract
The purpose of this study is to investigate the macroscopic spray characteristics and spray pattern of a gasoline direct injection (GDI) injector according to the increase of injection pressure. The macroscopic spray characteristics, such as a spray tip penetration and spray angle, were measured and analyzed from the frozen spray images, which are obtained from the spray visualization system including the high-speed camera, light-source, long-distance microscope (LDM). The spray pattern was analyzed through the deviation of the center of the spray plum and images were acquired using Nd: YAG Laser and ICCD(Intensified charge coupled device) camera. From the experiment and analysis, it revealed that the injection pressure have a significant influence on the spray tip penetration and spray pattern. However, the injection pressure have little influence on the spray angle. The increase of injection pressure induced the reduction of a closing delay. In addition, the deviation of spray center increase with the increase of injection pressure and the distance from a nozzle tip.
Keywords
GDI(Gasoline Direct Injection); Spray characteristics; Spray pattern; Spray penetration; Spray angle;
Citations & Related Records
Times Cited By KSCI : 7  (Citation Analysis)
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