Experimental exploration of fuel spray characteristics with various injection duration using bio-diesel

Nowadays, emission norms are very stringent due to global warming and pollution all over world, in order to reduce these emissions the current research is going on in alternative fuel. In this way the study of fuel spray characteristics is a vital one, which influences the emission, combustion and mixture formation. The spray characteristics of fuel primarily depend on fuel injection process, fuel density, viscosity, ambient pressure and temperature. The main aim of the work is to study spray duration and injection pressure at ambient conditions for Jatropa Oil Methyl Ester (JOME) and Karanja Oil Methyl Ester (KOME) fuelled in a spray chamber under non evaporating condition. The Macroscopic spray characteristics, such us spray tip penetration, spray cone angle, spray width, shape factor and spray area were found by Image processing technique (proanalyst software). It was observed that increasing spray duration would improve the spray tip penetration and spray area, due to this reason a decrease in spray width, spray cone angle and shape factor for JOME and KOME were observed when compared to diesel. The effect of fuel properties on near nozzle morphology was calculated. The spray formation was prolonging and narrower spray plume cone angle, width is observed for JOME and KOME as compared to diesel showing slower breakup length. This work also investigates spray atomization and penetration of different fuels with diesel.