副室式ディーゼル機関のセラミックス製渦流室における燃焼特性

概要

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There is a concept that the increase in the temperature of the charge in a combustion chamber and the shield of heat transfer through a chamber wall can facilitate soot oxidation and reduce soot discharge. In the experiments presented here, an IDI diesel engine installed with a bigger-size cylindrical swirl chamber with two quartz windows, which can be considered to be a piston cavity in a DI diesel engine, was used to inspect the concept. The experiments were carried out using two types of swirl chambers to examine the effects mentioned above. The first chamber was made of ceramics and the other was made of steel. In case of the ceramics chamber, the evaporation of fuel oil is promoted more, the vapor is spread more, the ignition delay is shorter, the area of the flame is larger, the area of high flame temperature is larger, a stabler combustion is maintained until the flame vanishes, the maximum pressure is higher and soot is distributed in a wider zone than in that of the steel chamber.
社団法人日本機械学会の論文
1991-03-25