ABSTRACT
In diesel engines, the spray, the atomization, rate of evaporation, injector for fuel, and the droplet attributes it is necessary to ascertain the engine's performance, combustion efficiency, and emissions characteristics. In recent engine development employs micro-orifice hole with various orifice design. It is necessary to characteristics the impact of different nozzle designs on engine emissions and performance. In HCCI engines, the geometry hole of the nozzle and fuel characteristics in the nozzle will affect combustion and pollutants formation as well as fuel atomization. An analysis of the emission and performance attributes of HCCI engines is presented in this paper based on the geometry of the nozzle holes. Finally, it was observed that fuel injectors with more nozzle holes form less NOx and soot which emit more CO and HC when increased the nozzle hole number.
