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논문 기본 정보

자료유형
학술저널
저자정보
저널정보
한국자동차공학회 한국자동차공학회논문집 자동차공학회논문집 제5권 제5호
발행연도
1997.9
수록면
188 - 196 (9page)

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초록· 키워드

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Many researchers have developed the measurement technique of in-cylinder flow characteristics and found the effect of intake port geometries on engine performance. The flow characteristics of four-valve cylinder head were examined in a steady flow rig for different intake ports. Tumble in-tensity of intake configurations with different entry angles were quantified with a tumble meter. The velocity and angular momentum distributions in the tumble adaptor were measured under steady conditions with PIV(Particle Image Velocimetry).
We have obtained the results that flow structure becomes complicated by valve interference at low valve lift. As the valve interferences were reducing and the flow rates of tumble direction were increasing according to valve lift increasing and incylinder flow pattern changed to large vortex structure with tumble direction. intake ports with different entry angles have different tumble cen-ters. Tumble eccentricity of intake port with low entry. angle was large, so that the port had rela-tively much angular momentum compared to others which was expected to improve combustion performance.

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ABSTRACT

1.서론

2.실험장치 및 방법

3.실험결과 및 고찰

4.결론

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