The Department of Mechanical Engineering discusses a master's thesis on The effect of nanotechnology additives on the performance and emissions of the pressure ignition engine)) (The effect of nano-additives on performance and emission of compression

The Department of Mechanical Engineering discussed a master's thesis on: The effect of nanotechnology additives on the performance and emissions of the pressure ignition engine))

(The effect of nano-additives on performance and emission of compression ignition engine) That took place on Thursday, 9/1/2020 at nine o'clock in the room of Dr. Jawamir, where the discussion committee consisted of: Prof. Abdul Hassan Abdul Karamallah / Chairman and Assistant Professor Naseer Salman Kazim / Member and Assistant Professor Mahmoud Atallah Mashkour / Member And Assistant Professor Abdul Kazim Muhammad Hassan / supervisor.

The thesis aimed to clarify the experimental work to study the effect of adding nanoparticles to diesel fuel on engine performance and emissions. The added nanoparticles were titanium oxide (TiO2) and aluminum oxide (Al2O3) with a diameter of 20 nanometers and 25 nanometers, respectively. Three doses of nanoparticles were added in volumetric proportions (25,50,100) one part per million parts to prepare the nanofuel. Nanoparticles were mixed with diesel fuel by a manual mechanical mixer and an ultrasound machine.

The study reveals that adding aluminum oxide (Al2O3) and titanium oxide (TiO2) to diesel fuel (diesel + aluminum oxide) and (diesel + titanium oxide) improves the physical properties of fuels. Where the sitanian number was improved from 51.8 for net diesel to 53.2 and 53.9 for (diesel + titanium oxide) and (diesel + aluminum oxide) respectively at 100 ppm, the calorific value improved from kcal / kg10941.08 for net diesel to kcal / kg 10960.43 and kcal 10949.41 / kg for (diesel + titanium oxide) and (diesel + aluminum oxide) respectively at 100 ppm, the flash point increases from 65 ° C for net diesel to 78 ° C and 76 ° C for (diesel + titanium oxide) and (diesel) + Aluminum oxide), respectively, at 100 ppm.

Also, the addition of (Al2O3) and (TiO2) improves engine emission characteristics such as carbon monoxide emissions which decreased by 34.28% and 20.5% for (diesel + titanium oxide) and (diesel + aluminum oxide) respectively at 25 parts In a million, carbon dioxide emissions increased by about 1.75% and 2.27% for (diesel + titanium oxide) and (diesel + aluminum oxide) respectively at 100 ppm, nitrogen oxide emissions decreased by about 37.7% and 12.2% for each of + Titanium oxide) and (diesel + aluminum oxide) respectively at 25 ppm and non-combustible hydrocarbon emissions decreased by about 16%. 9 and 13.5% for (diesel + titanium oxide) and (diesel + aluminum oxide) respectively at 25 ppm

Finally, the addition of (Al2O3) and (TiO2) improves engine performance such as a 23.5% and 23.3% reduction in specific braking specific fuel consumption for (diesel + titanium oxide) and (diesel + aluminum oxide) respectively at 25 ppm, and decreased The equivalent rate was about 26.83% and 14.87% for (diesel + titanium oxide) and (diesel + aluminum oxide) respectively at 25 ppm, the brake thermal efficiency increased by 18.87% and 10.89% for (diesel + titanium oxide) and ( Diesel + aluminum oxide) respectively at 25 ppm and the exhaust gas temperature increased from 220 ° C for the diesel grid to 245 ° C with the addition of 100 pp Millions of alumina are not loaded.