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Development of Gasoline Direct Swirl Injector
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 Title & Authors
Development of Gasoline Direct Swirl Injector
Park, Yong-Guk; Lee, Chung-Won;
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 Abstract
The Gasoline Direct Injection(GDI) system has been highlighted due to the improvement of fuel consumption and the control of exhaust emission from gasoline engines. The GDI system includes a high injection pressure, smaller mean diameter, good spray characteristics and stability. We were interested in the development for gasoline direct swirl injector(GDSI) in which the swirler is specially designed with an incident angle. Nymerical analysis was utilized to investigate the internal flow of GDSI with a goal to determine the swirl incident angle and needle lift. Accordingly, it describes characteristics of a GDSI in which the flowrate and spray characteristics are satisfied. especially the spray tip penetration decreases, compared with other type GDI, mean diameter of droplets is from 20 to 25 and spray angle ranges from 64to 66.
 Keywords
Gasoline Direct Swirl Injector(DGSI);High Pressure Swirl Injection(HPSI);Swirler;Pick-Hold Signal;Dynamic Flowrate;Counter-Rotating Recirculation Zone;
 Language
Korean
 Cited by
1.
직접분사식 가솔린 선회분사기 개발에 관한 연구 II,박용국;이충원;

한국자동차공학회논문집, 2001. vol.9. 6, pp.76-84
 References
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