▎ 摘　　要

In this article was investigated performance, combustion and emission by modifying the nozzle, (singles holes (modified), (3 holes (based) and (five holes). The tests were performed in four-stroke Kirloskar single-cylinder diesel engine-fueled by graphene oxide (30 ppm) at 1500 rpm, and the water-cooled direct injection diesel engine with an eddy current dynamometer has been maintained throughout the experiment at a standard injection timing at 240 bar is 23 degrees BTDC (before Top Dead Centre). Three different nozzles from the results were noted. The impressive results in performance, combustion, and emissions (3 holes fuelled with diesel and 30 ppm of graphene oxide) are improved. The only drawback is that the amount of NOx is increased due to complete combustion, with diesel and graphene oxide at 30 ppm.