3226 スプリット噴射が直噴ディーゼル噴霧の混合気特性におよぼす影響(S48-2 燃料噴霧・混合気形成(2),S48 燃料噴霧・混合気形成)

概要

論文の詳細を見る
Characterization of the mixture formation process of a split injection D.I. Diesel spray injected by a common rail injection system was made using the laser absorption and scattering (LAS) technique. The LAS technique provides the quantitative measurements of the liquid and vapor phase concentration distributions in the fuel spray. Comparing with the single injection, the split injection shows smaller liquid phase penetration and slightly smaller spray tip penetration. The fuel vapor concentration is higher around the spray tail (injection nozzle side) and decreases as it approaches the spray tip. The injection splitting makes a relatively flat distribution of the vapor equivalence ratio around the middle to the tip of the spray. The 2nd injection of the split injection increases the rates of ambient gas entrainment and fuel evaporation, and it shifts the peak of the frequency distribution of the vapor equivalence ratio to the stoichiometric side.
社団法人日本機械学会の論文
2005-09-18