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자료유형
학술저널
저자정보
박정환 (한양대학교) 박수한 (한양대학교) 이창식 (한양대학교) 박성욱 (한양대학교)
저널정보
한국자동차공학회 한국자동차공학회논문집 한국자동차공학회논문집 제20권 제2호
발행연도
2012.3
수록면
116 - 122 (7page)

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초록· 키워드

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The purpose of this study is to investigate the overall spray behavior characteristics for various injection conditions in a gasoline direct injection(GDI) injector with multi-hole. The spray characteristics, such as the spray penetration, the spray angle, and the injection quantity, were studied through the change of the injection pressure, the ambient pressure, and the energizing duration in a high-pressure chamber with a constant volume. The n-heptane with 99.5% purity was used as the test fuel. In a constant volume chamber, the injected spray was visualized by the spray visualization system, which consisted of the high-speed camera, the metal-halide lamp, the injector control device, and the image analysis system with the image processing program.
It was revealed that the injection quantity was mainly affected by the difference between the injection pressure and the ambient pressure. For low injection pressure conditions, the injection quantity was decreased by the increase of the ambient pressure, while it nearly maintained regardless of the ambient pressure at high injection pressure. According to the increase of the ambient pressure in the constant volume chamber, the spray development became slow, consequently, the spray tip penetration decreased, and the spray area increased. In additions, the circular cone area decreased, and the vortex area increased.

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Abstract
1. 서론
2. 실험 장치 및 방법
3. 실험 결과 및 고찰
4. 결론
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