抄録
The formation of the fan-shaped spray through the new-type nozzle named V-type intersecting hole nozzles (IH nozzle) was proven by means of visualization. The spray characteristics including spray angle and spray tip penetration were studied by the comparison of two IH nozzles with different intersecting angles and a single hole nozzle (SH nozzle) in variable boundary conditions. Experimental results showed the spray angles in X and Y directions of the IH nozzles, as well as the spray tip penetration, were adjusted by the intersecting angle of the sub-holes inside the IH nozzles. A concept named spray volume enhancement ratio, δ_<SVER>, was also used in order to qualitatively estimate the injector performance as far as the end fuel mixture. In addition, numerical simulation was carried out to analyze the effects of the intersecting angle on the velocity characteristics, as well as cavitation in AVL-FIRE environment.
