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By applying a smoke-wire method, the air swirl in the cylinder of the internal combustion engine was visualized successfully in the condition of motoring.<BR>A nichrome wire coated with oil was set up inside the combustion chamber. The oil was vaporized by heating the wire electrically in the fixed instant, and then the oil vapor was cooled by ambient air and the white oil mist (smoke) was formed.<BR>The photographs of smoke were taken by means of a high speed camera, so the flow pattern and the velocity of air were determined.<BR>The fundamental properties of this electrically controlled smoke traces were investigated in steady flow and in the field of acceleration, and then it was found that the technique was possible to apply to the flow visualization and the quantitative measurement of the air swirl in engine.
公益社団法人日本マリンエンジニアリング学会の論文