Effects of injection pressure on performance & emission characteristics of CI engine using graphene oxide additive in bio-diesel blend

Abstract In the present study, the effects of graphene oxide (GO) Nanoparticles and Injection Pressures on Performance and Emissions of a diesel engine fueled with Sapota seed biodiesel were investigated. Fuel injection pressure plays a vital role in enhancing engine performance & emission characteristics. Biodiesel's two blends were made with Sapota Seed Oil (10% & 20%) mixed with Diesel (90% and 80%), respectively termed as B10 and B20. The GO Nano-particles of 50 ppm concentration were mixed with these two blends and named as (B10GO50, B20GO50) and later did engine testing with 200 and 220 bar injection pressures. Experiments were performed at a constant 1500 rpm speed at loads of 0, 25, 50, 75, 100 (%), but varying Fuel injection pressures. From the experiments, we obtained values for various parameters, such as BSFC, BTE, Carbon monoxide (CO), Hydrocarbon (HC), Carbon dioxide (CO2), and Nitrogen oxide (NOx). We have noticed from the data that, as the injection pressure rises, the atomization increases. As a result, we observed that NOx Emissions had reduced significantly by 39%. Moreover, we determined less CO and HC emissions in the blends B20GO50 and B10GO50 with 200 and 220 bar than the Diesel. From the Investigation, it can be concluded that biodiesel can be used as an alternative to the diesel engine without any engine modifications.