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정적 체임버 내에서 분사 조건에 따른 다공형 직분식 가솔린 인젝터의 분무 거동 특성

Title
정적 체임버 내에서 분사 조건에 따른 다공형 직분식 가솔린 인젝터의 분무 거동 특성
Other Titles
Spray behavior characteristics of multi-hole GDI injector for the injection conditions in a constant volume chamber
Author
박성욱
Keywords
GDI(가솔린 직분사); Multi-hole injector(다공형 연료 분사기); Spray tip penetration(분무 도달거리); Ambient pressure(분위기 압력)
Issue Date
2011-05
Publisher
한국자동차공학회 / The Korean Society Of Automotive Engineers
Citation
한국자동차공학회 부문종합 학술대회, Vol.2011 No.5 [2011], 194-197(4쪽)
Abstract
The aim of this study is to investigate the effect of the energizing duration and the ambient gas pressure on the gasoline direct injection (GDI) spray behavior characteristics in a constant volume-high pressure chamber. In order to visualize the GDI spray, the spray visualization system, which consists of the high-speed camera, the meta-halide lamps, and the synchronizing systems, is utilized. In addition, the n-heptane fuel that has a similar physical properties with gasoline fuel is used for the safety. It was revealed through the spray image analysis that the effect of energizing duration for spray tip penetration is insignificant. Also, the spray tip penetration is decreased according to the increasing ambient pressure due to the increase of the drag force and friction of ambient gas. The rotating vortex was located closely the injector nozzle tip as increase of ambient pressure.
URI
http://www.dbpia.co.kr/Article/NODE01755307
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > MECHANICAL ENGINEERING(기계공학부) > Articles
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