3223 ディーゼルホールノズルの拡大模型におけるエマルジョン液体の流動,および微粒化挙動(S48-1 燃料噴霧・混合気形成(1),S48 燃料噴霧・混合気形成)

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The spray produced by the 10 times enlarged nozzle has been studied to elucidate behaviors of the internal cavitating flows and the breakup processes of emulsified fuel in diesel engines. The 54vol% peanut oil emulsified water with adding 23vol% ethanol as an emulsifier was employed as a test liquid. The difference of structure can be observed between the water sprays and the sprays of emulsified water at relatively low injection pressure and at relatively low needle lift, i.e. emerging the emulsified water from the nozzle frequently leads to producing the hollow cone spray, while it forms a solid cone spray as water is ejected. Therefore the spray of the emulsified water exhibits wider spray angle than that of water.
2005-09-18