可視化計測法を用いたエンジン内ガス流動の計測(ピストン形状によるガス流動変化)

概要

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Abstract In diesel engines, gas flow is a very important term which promotes to mix air and fuel. However, in the past measurement procedure it is difficult to install the observation window and so on. Moreover, it was dlfficult to measure the three-dimensional flow in the cylinder. Therefore, it is necessary to understand gas flow in the cylinder in detail. In our previous research, we proposed the flow visualization method using color layer which can be indicated the velocity to the depth direction by the color of the image, and then three-dimensional flow measurement could be achieved. In this research, the model engine to imitate a real engine is used to examine the gas flow in the cylinder. Gas flow in the cylinder was measured how it was changed by two kinds of piston forms in this model engine by using visualization of tracers in color layer. As a result, it was understood that the state of the gas flow in the cylinder changes by the difference of the piston form. Thus, effectiveness of this measurement method measuring the gas flow in a cylinder was able to be shown.
宮崎大学の論文