ガソリン機関用噴射弁の噴霧性状に関する研究 : 第2報, 噴霧性状の背圧による変化

概要

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This paper discuses the atomization mechanism of a spray injected into a low-pressure field, as the focus of an injection system in a suction manifold of gasoline engines. Pure liquid fuel, which is n-Pentane or n-Hexame, is injected into a quiescent gaseous atmosphere at room temperature and low pressure through a pintle-type gasoline injector. Fuel sprays are observed through photographs with varying the back presure, and the changes in spray characteristics with the back pressure below atmospheric pressure are examined in detail. In particular, in the case of back pressure below the saturated vapor pressure of fuel, atomization mechanism is discussed from the viewpoint of the flash boiling phenomenon. Spray characteristics can be obtained with the pressure difference between the back pressure and the vapor pressure, corresponding to the intensity of the flash boiling, for various fuels.
一般社団法人日本機械学会の論文
1992-09-25