Examining CI Engines Experimentally Using SCR After-Treatment Techniques on Biodiesel

Abstract

These days, diesel engine emissions are the most prevalent issue. It has a negative impact on human life and the environment. As a result, the quantity of exhaust gases in the atmosphere has increased exponentially. The main gases that have the greatest negative impact on the environment are particulate matter, carbon monoxide, unburned hydrocarbons, and nitrogen oxides. To address these gases in gasoline and diesel engines, a number of technologies have been developed. One such cutting-edge emissions control technique for lowering emissions in diesel engines is selective catalytic reduction. Investigating a direct injection single cylinder CI engine running on biodiesel using the SCR after-treatment technique is the aim of this work. As an alternative to diesel fuel, which has a low cetane number and is insufficient to run current diesel engines, we used Jatropha methyl ester biodiesel for this study. Multiple regression analysis and Taguchi's performance and emission are used in this study. Fuel fraction, compression ratio, injection timing, injection nozzle pressure, urea flow rate, and urea percentage are the chosen input parameters. Measured output variables that affect CI Engine performance include Brake Thermal Efficiency (BTE), Specific Fuel Consumption (SFC), the amount of HC particles, NOx, and CO2 in the emission. The optimal conditions, which included a 17.5:1 compression ratio, 230 bar injection pressure, 22° injection timing, and 20% fuel, were discovered during the test, which was conducted under full load conditions.