EFFECT OF INJECTOR ORIENTATION ON VELOCITY VECTOR COMPONENTS IN A DI DIESEL ENGINE: ANALYSIS THROUGH CFD SIMULATION

摘要

In direct injection (DI) diesel engines the effect of injector Orientation on velocity vector Components have high influence on engine performance as well as exhaust gas emissions. The fuel injector orientation plays very important role in fuel air mixing. A single cylinder four stroke DI diesel engine with fuel injector having multi-hole nozzle injector is considered for the analysis and a computational fluid dynamics (CFD) code, STAR-CD is used for the simulation. In the present study, various injector orientations are considered for the analysis. It is shown that there is an optimal injector orientation for the fuel in-cylinder fluid flow through velocity vectors at 950, 1000 and 1100 are discussed.