Analysis of Spray Feature in Multi Hole Nozzle for Direct Injection Gasoline Engine

Abstract

In direct injection gasoline engines, the spray structure has dominant effect on the ignition and combustion processes. In this study, we conducted analysis of non-evaporative spray features injected from multi hole nozzle for direct injection gasoline engine by experiment and numerical simulation using the commercial CFD code. Here, in the experiment the spray features were grasped with Super High Spatial Resolution Photography (SHSRP), which was originally developed by the author’s group. Further, it is found that the simulated spray structure such as the penetration and droplet size distribution with CFD code is well consistent with the experimental results.