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논문 기본 정보

자료유형
학술저널
저자정보
저널정보
한국자동차공학회 한국자동차공학회논문집 한국자동차공학회논문집 제8권 제4호
발행연도
2000.7
수록면
42 - 50 (9page)

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초록· 키워드

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Drop size distribution of an air-assisted fuel injector (AAFI) was investigated. Influence of parameters such as ambient air density, supply pressure, and air-liquid mass ratio (ALR) was examined through both measurement and analysis. The Sauter mean diameter (D₃₂) varied from 9 to 25 μ m throughout all experimental conditions. An empirical correlation for droplet size was obtained, Analytical correlations for predicting D₃₂ with respect to operating conditions were also derived through energy consideration and introduction of a simplified model of the initial state of the liquid fuel. When a modified term for the ALR, which had been obtained from the empirical fitting, was adapted to the original equation, the proposed correlation in this study matched more closely with measured results. The current correlation exhibited a favorable prediction for D₃₂, compared to that by the empirical correlation at selected experimental conditions, so that it may be used to predict atomization performance of the AAFI at operating conditions, which was not covered in the measurements. After validation, the analytical equation was applied to survey the feasible operating conditions for gasoline direct injection application.

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ABSTRACT

1.서론

2.실험장치

3.측정결과

4.평균입경(D32)예측을 위한 해석

5.미립화 성능 예측

6.결론

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UCI(KEPA) : I410-ECN-0101-2009-556-013989526