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직분식 가솔린 인젝터의 흡입 행정 분사시의 연료 거동 및 혼합기 분포 특성에 관한 연구

Title
직분식 가솔린 인젝터의 흡입 행정 분사시의 연료 거동 및 혼합기 분포 특성에 관한 연구
Other Titles
A Study on the Fuel Behavior and Mixture Formation in the Early Injection Timing of GDI Injector
Author
이기형
Keywords
GDI Injector; Penetration; Spray Angle; Injection Pressure; 가솔린 직분식 인젝터; 분무도달거리; 분사 압력
Issue Date
2002-08
Publisher
대한기계학회
Citation
대한기계학회논문집 B권, v. 26, no. 8, page. 1138-1144
Abstract
Recently GDI(Gasoline Direct Injection) engine is spot-lighted to achieve higher thermal efficiency under partial loads and better performance at full loads. To realize this system, it is essential to make both stratified combustion and homogeneous combustion. Spray pattern must be optimized according to injection timing because ambient pressure in combustion chamber is varied with crank angle. In this experimental study, two types of visualization system such as laser scattering method and schlieren method were developed to clarify the spray behavior during on intake stroke. As the ambient pressure increases, the penetration length and spray angle show a tendancy to decrease due to rising resistance caused by the drag force of the ambient air. Distribution of injected fuel on intake stroke has a significant effect on homogeneous mixture in the cylinder. These results provide the information on macroscopic wall-wet growth in the cylinder and design factors for developing GDI injector.
URI
http://www.dbpia.co.kr/journal/articleDetail?nodeId=NODE00530518https://repository.hanyang.ac.kr/handle/20.500.11754/157467
ISSN
1226-4881; 2288-5234
Appears in Collections:
COLLEGE OF ENGINEERING SCIENCES[E](공학대학) > MECHANICAL ENGINEERING(기계공학과) > Articles
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