Abstract
In order to regenerate the diesel particulate filters (DPF), temperature of the exhaust is raised by SFI (Secondary Fuel Injection). The purpose of this study is to predict spray feature injected by tailpipe injector in diesel engines. In this report, we calculated the spray in tailpipe considered multi-component of fuel simulated diesel fuel regarding numerical analysis. As a result, it is clarified calculation results can qualitatively reappeared real phenomena.