直噴ガソリン燃焼を想定した高温高圧場における高揮燃料噴霧の挙動 : 熱工学 , 内燃機関 , 動力など

概要

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Spray behavior of gasoline fuel injected into a N, gas vessel through a swirl nozzle with narrow spray cone angle were studied by means of a Schlieren photograph observation and a fuel vapor concentration measurement by Rayleigh scattering method, using Ar ion laser as a light source. The pressure and temperature inside the vessel were changed up to 0.6 MPa and 200℃ respectively. A low volatility gasoline and iso-Pentane of very high volatility were also studied. As a results, under the higher volatility condition appeared such features as the stronger gradient or sharp skeleton in the shade of the spray photograph at break up, the more accelerated penetration of the spray tip after break up, the wider region where Mie scattering dose not interfere the Rayleigh scattering, the wider region in the outside of the spray edge observed where fuel vapor concentration is detected. A simple break up theory was considered and the experimental formulas were made for the spray shape behavior.
一般社団法人日本機械学会の論文
2001-02-25