It is important to measure the temperature on the combustion chamber wall surface of a spark ignition engine because of improvement for thermal efficiency in the engine.Temperature on the engine combustion chamber wall surface is usually measured by the film type of the thermocouple. However attaching a thermometer to an engine has many restrictions. In this study, the temperature and the heat flux measurements on the engine combustion chamber wall surface were carried out using infrared rays. In order to remove the influence of infrared from combustion gas, the sapphire glass for observation window evaporated a carbon film and an aluminum film was applied. Moreover the influence on the heat flux of the sapphire glass used for the infrared rays observation window by the simulation using the MSC software was investigated. At first the calibration was carried out. The calibration is the method to obtain a relation of temperature and infrared radiation. Next the temperature on the spark ignition engine wall was measured with the IR detector. The temperature and the heat flux of the same place were measured using the thermocouple of the film type, and they were compared with the results using the IR detector. As the result the instrument for in the heat flux measurement on the combustion chamber wall surface using infrared rays, is improved in response and reproducibility. Moreover change of the temperature of the infrared observation window was able to be predicted by the simulation using MSC.
雑誌名
宮崎大學工學部紀要
巻
41
ページ
193 - 198
発行年
2012-07-30
出版者
宮崎大学工学部
Faculty of Engineering, University of Miyazaki
リポジトリのご案内
赤外線を利用した燃焼室壁面の熱流束計測(赤外線観測窓の検討)
engineering41_193-198.pdf
(1.86MB)
