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조기 흡기 밸브 닫힘과 분사시기 변경을 통한 가솔린 직분사 엔진에서의 혼합기 형성 및 난류특성에 관한 수치적 연구Numerical Study on Mixture Formation and Turbulent Characteristics in a GDI Engine for Various Intake Valve Closing and Injection Timings
- Other Titles
- Numerical Study on Mixture Formation and Turbulent Characteristics in a GDI Engine for Various Intake Valve Closing and Injection Timings
- Issue Date
- May-2014
- Publisher
- 한국연소학회
- Keywords
- Gasoline Direct Injection; Early Intake Valve Closing; Injection Timing; Spark Ignition Engine; Fuel-Air Mixture
- Citation
- KOSCO SYMPOSIUM 논문집, pp.169 - 170
- Indexed
- OTHER
- Journal Title
- KOSCO SYMPOSIUM 논문집
- Start Page
- 169
- End Page
- 170
- Abstract
- Early intake valve closing was purposed to reduce pumping lose in a gasoline direct injection engine. Reduced turbulence intensity was supplemented by injecting fuel. To compare effects of applying early intake valve closing, throttling case was also investigated. Early intake valve closing induces high turbulence kinetic energy. However, throttling case has higher turbulence kinetic energy than throttling case at TDC. Late injection intensifies turbulence intensity in both case while it reduces fuel-air mixture homogeneity.
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Collections - 서울 공과대학 > 서울 기계공학부 > 1. Journal Articles
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Related Researcher
- Park, Sungwook
- COLLEGE OF ENGINEERING (SCHOOL OF MECHANICAL ENGINEERING)