Elucidation of Gasoline Direct Injection Spray Characteristics by Mixing with High-boiling Component Fuel (First Report)

―Analysis of Effect on Basic Spray Characteristics by Changing Fuel Component―

Abstract

In the future, there is a movement to reduce the number of diesel vehicles, and it is expected that diesel fuel might be in excess. The purpose of this study is to propose a fuel design by mixing the surplus diesel fuel into gasoline and apply it to gasoline engines. In this report, it was evaluated the macroscopic and atomization characteristics of spray by changing the fuel composition and investigated the effect on wall impingement. As a result, gasoline spray mixed with diesel fuel component made lager droplet, therefore fuel droplet impingement behavior might be difference.