TY - JOUR ID - 72273 TI - Hydrogen and Ethanol as Potential Alternative Fuels Compared to Gasoline under Improved Exhaust Gas Recirculation JO - International Journal of Engineering JA - IJE LA - en SN - 1025-2495 AU - Nemati, Arash AU - Jafarmadar, Samad AU - Khalil Arya, S. AU - Mardi Kolur, Mohsen AD - Miyaneh Branch, Islamic Azad University AD - Mechanical Engineering, Urmia University AD - Mechainical Engineering, Urmia University AD - Mechanical Engineering, TU Berlin Y1 - 2014 PY - 2014 VL - 27 IS - 3 SP - 449 EP - 456 KW - SI engine KW - hydrogen KW - Alternative fuels KW - EGR KW - supercharging KW - Emission DO - N2 - In the present study, a computational fluid dynamics (CFD) method have been utilized to investigate the effects of exhaust gas recirculation (EGR) and initial charge pressure by means of using a supercharger on the emissions and performance of a SI engine. This engine is fueled separately by gasoline and two potential alternative fuels, hydrogen and ethanol. The results of simulation are compared to the experimental data. There is a good agreement among the results. The calculations are carried out for EGR ratios between 0% and 20% and four cases of initial pressure have been mentioned: Pin= 1, 1.2, 1.4, 1.6 bar. The effect of EGR on NOx emission of hydrogen is more than others while its effect on IMEP of hydrogen is less than others. From the viewpoints of emission and power, 10% of EGR seems to be the most desirable amount. The most noticeable effect of supercharging is on gasoline unlike hydrogen that seems to be affected the least. The comparison of results shows that hydrogen due to its high heating value and burning without producing any carbon-based compounds such as HC, CO and CO2 is an ideal alternative fuel compared to the other fuels. UR - https://www.ije.ir/article_72273.html L1 - https://www.ije.ir/article_72273_6f1282b4c04d3b588d91e024ecfb2a6e.pdf ER -