A CFD STUDY ON THE EFFECT OF INJECTION PARAMETERS ON THE FORMATION OF NOX EMISSIONS IN DIESEL ENGINES

The objective of this study is to predict the effects of two main injection parameters on the formation of NOx emissions. The first parameter is the injection timing, the effects of injection timing on the formation of NOx emission will be illustrated and explained at four different injection timings. The second parameters is the cone angle, the effect of changing the cone angle on the formation of NOx emissions will be illustrated and discussed at different three cone angles as well. Computational fluid dynamics (CFD) and ANSYS ICE program were used for simulating the injection process, combustion, and the formation of NO. The Volume-average mole fraction of NO, the Mass-Average mass fraction of NO and the NO density will be discussed at all cases of injection parameters..