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한국자동차공학회 한국자동차공학회논문집 한국자동차공학회논문집 제11권 제3호
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피인용 7

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    초록·키워드

    A cylindrical constant volume combustion chamber was used to investigate the flow characteristics at spark plug and the combustion characteristics of homogeneous charge methane-air mixture under various initial pressure, excess air ratio and ignition times in quiescent mixture. The flow characteristics such as mean velocity and turbulence intensity was analyzed by hot wire anemometer. Combustion pressure development measured by piezoelectric pressure transducer and flame propagation acquired by ICCD camera were used to investigate the effect of initial pressure, excess air ratio and ignition times on pressure, combustion duration, flame speed and burning velocity. Mean velocity and turbulence intensity had the maximum value at 200 or 300ms and then decreased to near 0 value gradually after 3 seconds. Combustion duration. flame speed and burning velocity were observed to be promoted with excess air ratio of 1.1, lower initial pressure and ignition time of300ms.

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      UCI(KEPA) : I410-ECN-0101-2009-556-013994716