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자료유형
학술대회자료
저자정보
김재헌 (한국과학기술원) 박정서 배충식
저널정보
한국자동차공학회 한국자동차공학회 추계학술대회 및 전시회 2010년 한국자동차공학회 학술대회 및 전시회
발행연도
2010.11
수록면
320 - 325 (6page)

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초록· 키워드

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The operating characteristics and efficiency of a small-sized linear engine fueled with propane for generating electricity was investigated. The bore and stroke of the engine was 20 ㎜ and 19 ㎜, respectively, resulting in total displacement of 12 ㏄ with 2 cylinders. Spark ignition system was adopted, and the mixture of propane and air was supplied to the combustion chamber. The pressure and the equivalence ratio of the mixture were varied to investigate the operating speed and combustion characteristics. Displacement sensor was used to measure the displacement of the piston and the velocity data was further derived. Pressure data inside the combustion chamber was measured with pressure transducer to study the combustion. Under the idling condition, the variation of the operation frequency was not obvious as the variation of the mixture conditions, and the operating frequency maintained around the value of 50 ㎐. The combustion of each cycle showed instability according to the variation of the IMEP(Indicated Mean Effective Pressure), and eventually resulted in large cyclic variation. The main reason of the instability was due to the uneven amount of mixture trapped in the cylinder during the scavenging process. Also, low overall fuel conversion efficiency of the engine was observed due to the low scavenging efficiency of the 2-stroke engine and certain amount of short-circuited fuel.

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Abstract
1. 서론
2. 실험 장치 및 조건
3. 실험 결과
4. 결론
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UCI(KEPA) : I410-ECN-0101-2013-556-001769237