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논문 기본 정보

자료유형
학술대회자료
저자정보
저널정보
한국자동차공학회 한국자동차공학회 춘 추계 학술대회 논문집 한국자동차공학회 1997년 추계학술대회논문집 1호
발행연도
1997.11
수록면
359 - 365 (7page)

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초록· 키워드

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Initial flame development and propagation were visualized under different stratified conditions to estimate the effects of stratification on the engine performance in a port injection SI engine. Effect of intake flow was also investigated by replacing cylinder heads of different swirl ratios. Experiments were performed in an optical single cylinder engine modified from a production engine and images were captured through the quartz window mounted in the piston by an intensified CCD camera. Four cylinder heads which have different intake ports were assembled on the cylinder block to vary port swirl ratios. Stratification was controlled by the combination of the port swirl ratio and injection timing. Under each condition, the flame images were captured at the pre-set crank angles. These were averaged and processed to characterize the flame. The flame stability was estimated by the weighted average of flame area and luminosity.
Results show that the direction of flame propagation is decisively governed by the in-cylinder flow. The flame development and the initial flame stability are strongly dependent on the stratified conditions and the initial flame stability governs the engine stability and lean misfire limit. Port-induced air motion is decayes in the combustion chamber at the end of the compression stroke.

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ABSTRACT

1.서론

2.실험장치 및 방법

3.실험 결과 및 검토

4.결론

5.참고문헌

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UCI(KEPA) : I410-ECN-0101-2009-556-014118281