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The instantaneous temperature probes and data acquisition system were developed for the measurement of cylinder wall surface temperature and the temperature at the inner part beneath the surface for the direct injection mono cylinder diesel engine. The instantaneous temperature at the inner part beneath the wall was both calculated theoretically and detected experimentally and then were compared each other. The results can be summarized as followings; 1) It is found that the measurable depth for the instantaneous temperature is 0.4mm. 2) When the depth beneath the surface was increased, the crank angles to the maximum temperature were increased and also there were the attenuation of maximum temperature, mean temperature, and temperature swing. 3) The variation of temperature swing is affected more by the temperature detection positions than by the engine speeds. 4) When the calculated temperature and detected temperature were compared, the temperature by the experiment is greater than by the calculation, it is believed that the poor cooling at the inner parts by flesh inlet air compared to the amount of cooling by flesh inlet air at the surface makes the experimental temperature to be higher than the calculation. 5) The correlation of surface temperature,the temperature of the inner parts with the engine spped and measurable depth are derived

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ABSTRACT

1.서론

2.순간온도프루부 제작 및 검증

3.실험장치 및 실험방법

4.결과 및 토의

5.결론

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UCI(KEPA) : I410-ECN-0101-2009-556-014116232