多成分燃料の噴霧挙動に関する研究 : 第2報,蒸発噴霧における多成分燃料の液相内部構造の解明(熱工学,内燃機関,動力など)

概要

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This study is conducted to assess the effect of mixed fuel composition and mass fraction on spray inner structure in evaporating transient spray under the variant ambient conditions. Spray structure and spatial distribution of liquid phase concentration are investigated using a thin laser sheet illumination technique on the multi-component fuel (3-component mixed-fuel). A pulsed Nd-YAG laser is used as a light source. The experiments are conducted in a constant-volume vessel with optical access. Fuel is injected into the vessel with electronically controlled common rail injector. Used fuel contains i-octane (C_8H_<18>), n-dodecane (C_<12>H_<26>) and n-hexadecane (C_<16>H_<34>) that are selected as low-, middle- and high- boiling point fuel, respectively. Experiment conditions are 72 [MPa] in injection pressure, 5 [kg/m^3] and 15 [kg/m^3] in ambient gas density, 500 [K], 600 [K] and 700 [K] in ambient gas temperature, and different fuel mass fraction. And the effect of fuel temperature (300 [K], 368 [K]) is investigated in order to assess the effect of vaporization characteristics on cold starting and normal operating condition.
一般社団法人日本機械学会の論文
2005-08-25