523 非定常燃料噴霧の壁面衝突挙動に関する基礎的研究

概要

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In a direct injection gasoline engine, the unburned hydrocarbons from adhesion fuel of the wall are one of the problems that needs to be solved. The purpose of this study is to clarify the mixture formation process including the spray-wall interaction for the solution of these problems and further high efficiency. As the first step, the wall impingement behavior of small droplets is observed by a high-speed video camera. The purpose of this experiment is to obtain the fundamental information concerning the film formation process and breakup behavior characteristics of individual droplets impinging upon a wall. As the second step, for the impinging spray, the behavior of droplet images is taken by laser sheet scattering. In addition, the film formation process in the impinging spray is observed by a high-speed video camera. Considering the result of first step, the purpose of the second step is to investigate the spray impingement behavior and the fuel film formation process.
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