Simultaneous Measurement of Deposition Amount of Diesel Spray Impinging on Oil Film and Oil Film Thickness Using Double Laser Induced Fluorescence Method

Abstract

Post-injection has been attracted attention as the Diesel Particulate filter regeneration method. However oil dilution caused that fuel spray impinges oil film on cylinder liner has seen as a problem is an issue which cannot be ignored. Because oil dilution is leading to deterioration of sliding properties of piston and thermal efficiency, there is need to clarify spray impingement behavior on oil film. In this study we simultaneous measured deposition amount of diesel spray impinging on oil film and oil film thickness using Double Laser Induced Fluorescence method. As the result of measurement using DLIF method, it was found that a large difference of amount deposition of fuel spray impinging on dry wall and oil film.