K-2013 ディーゼルノズルの噴霧特性に対する流量係数の影響(S24-2 燃料噴霧(1))(S24 燃料噴霧,ガス流動,混合気形成過程)

概要

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The hydro grinding process can be used for diesel nozzle production. Enhanced hydro grinding treatment leads to larger inlet radius, which makes larger flow coefficient. An experiment was conducted to clarify the effect of the flow coefficient on the spray characteristics. The results obtained are listed as follows. (1) The smaller flow coefficient leads to larger spray cone angle, shorter intact-core length, finer atomization and lower spray penetration. (2) Independently of nozzle hole flow coefficient, the spread of the spray at 20 mm downstream from the nozzle hole exit slightly increases with increasing injection pressure. However the spread of the spray at 1 mm downstream appears opposite tendency to the former.
社団法人日本機械学会の論文
2001-08-22