As a method of high efficiecy of an internal combustion engine a gas flow is introduced into a combustion chamber. However, the gas flow in the combustion chamber is not necessarily connected efficient from increasing the cooling loss by the heat transfer between the combustion gas and the combustion chamber wall. Therefore, it is necessary to know the correlation of the gas flow in the cylinder and heat transfer to the combustion chamber wall. When the state of the gas flow in the cylinder is swirl, the equation which can calculate the heat transfer coefficient of the whole combustion chamber from the gas flow within the turbulent flow region is obtained. However, this equation cannot be used when a gas flow is in the low flow velocity region. In this study, the heat flux on the cylinder wall is measured in the low flow velocity region. As a result, the heat transfer coefficient within the low flow velocity region is obtained using the pressure and the volume in the cylinder.
雑誌名
宮崎大學工學部紀要
巻
41
ページ
181 - 186
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
火花点火機関燃焼室における熱流束計測(シリンダ内流れが低流速域での検討)
engineering41_181-186.pdf
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