Thermodynamic Analysis, Performance And Emission Evaluation Of Ethanol- Gasoline Blend Fuel (E15)

Abstract

The Main Objective Of This Thesis Is To Study Thermodynamic Analysis And Performance Evaluation Of Spark Ignition (Si) Engines Using Gasoline-Ethanol Blend Fuel (E15). In This Work The Thermodynamic Analysis Of Actual Engine Cycle With Ethanol Gasoline Blend Fuel (E15) Was Done. Depending On The Thermodynamic Analysis Which Can Be The Mathematical Model Was Developed Using C++ Computer Programming Language. So The Performance Parameter Such As Brake Power, Brake Torque, Thermal Efficiency, Break Mean Effective Pressure, Combustion Efficiency, Brake Specific Fuel Consumption And Emission Was Analyzed. As A Result The Brake Power Torque For E15 Is Increased By 1.6% From E0. But The Fuel Consumption Decreased By 2.4%, 4.35% And 3.15% At Lower Speed, Maximum Power And Maximum Speed Respectively For E15 Than E0. This Program Is Versatile That Can Be Functional For Every Type Of Engine And Any Type Of Blend Proportion. As A Result The Brake Power, Brake Torque, Combustion Efficiency, Thermal Efficiency And Break Mean Effective Pressure Are Higher For E15 Than E0. The Brake Specific Fuel Consumption Is Lower For E15 Than E0. The Molar Fraction Emission Of Co2, Co And Water Vapor Is Less For E15 Than E0 But Molar Fraction Of N2 Is Higher For E15 Than E0. Experimental Investigation Was Done On The Real Engine And The Computer C++ Program Was Validated And Proved. In Experimental Investigation The Brake Power And Brake Torque For E15 Is Increased By 2.96% And 1.6% Respectively. The Minimum Fuel Consumption For E15 Is Lower By 1.3% Than E0 At 2308rpm, Higher For E15 By 1.7% Than E0 At Maximum Brake Power (2950rpm) And Higher For E15 By 2.5% Than E0 At Maximum Speed (3440rpm). The Deviation Between Result Of Developed Computer C++ Program And Experimental Investigation Was Less Than 5% For All Analyzed Engine Parameter.