Abstract
We propose a new method for evaluating the amount of adhesion fuel when fuel spray impinges on the wall surface by considering the normal and tangential droplet impact velocities. To verify this method, we examine how the amount of fuel adhered to a flat plate varies with the spray's angle of incidence. Our experimental results show that less fuel adheres to the wall when spray is oriented obliquely. To verify our method, we also examine the concentration of the air-fuel mixture and the fuel film thickness formed in an engine intake port model when a fuel spray is injected. By comparing these experimental results with our calculated results, we show that our proposed method can evaluate the behavior of adhered fuel which conventional methods can not evaluate.
