Effects of Injector Parameters on Diesel Engine Performance and Exhaust Emissions by Using Simulation Software

Abstract

The phenomenon of global warming is one of the most important problems facing us at the present time, which has not been treated so far, and that the root cause of this phenomenon is the greenhouse gases surrounding the globe, and hence the aim was to reduce the rates of these gases and know the causes of the occurrence and attempts To reduce or minimize these causes. Emissions from motor vehicles and power plants are one of the main reasons for the presence of greenhouse gases, so there has to be a solution that reduces these emissions, and here are the emissions from motor vehicles in general and diesel engine in particular. The engine was tested to reduce its emissions, and the method used was to adjust the fuel injector to reduce emissions and increase mechanical efficiency. A comprehensive study was conducted for these emissions, their different types, causes and ways to reduce them by studying the amount of emissions and mechanical efficiency of one of the diesel machines and then conducting the same study for the same machine, but by changing the injector variables Where at each stage we change one of the variables of the fuel injector in a certain range and installing other variables, at a certain nominal engine speedand compression ratio until we get the lowest amount of emissions and the highest mechanical efficiency as possible. And when entering the values of injector parameters obtained into the Diesel-RK program,it is noted that the value of mechanical efficiency increased from 88.01% to 88.8%, the PM emission decreased from 0.17372 ppm to 0.13187 ppm, CO2 emission decreased from 714.04 g/kWh to 711.67 g/kWh and the value of NOx emission decreased from 1205.2 g/kWh to 805.45 g/kWh.