Developmental Study on High-Dispersion Diesel Injection Nozzle (3rd Report, Effects of Geometric Dimension of Atomization Enhancement Nozzle on Atomization of Intermittent Spray)

The purpose of this study is to develop the nozzle, which is able to obtain the spray with high-dispersion and high-penetration and to apply the atomization enhancement nozzle developed in this study to an actual Diesel injector. In this paper, the effects of geometric shape and dimension of the atomization enhancement nozzle on atomization of intermittent spray were investigated. Moreover, spread of the spray of the atomization enhancement nozzle, which was invented in this study, was compared with a single hole nozzle used in the actual Diesel nozzle. As the results, although the spray tip penetration of the atomization enhancement nozzle was short, spread of the spray became large significantly compared with the single hole nozzle at the intermittent injection.