Abstract
The mixture formation process of a direct injection gasoline spray, which plays an important role of combustion and emission formation processes, was investigated to visualize liquid and vapor phase by the use of scattering and LIF. In the present study, the charge condition including density and temperature in the constant volume bomb was changed to investigate the effect of surroundings on mixture formation. Moreover, OH radical of spray combustion was also visualized by LIF. As a result, the injected spay behavior into high pressure and temperature field and these combustion characteristics were made clear.
