Control of Exhaust Emissions from Two Stroke SI Engine having Copper Coated Piston with Methanol Blended Gasoline with Catalytic Converter

Abstract

Experiments were conducted to evaluate and control the exhaust emissions from two stroke single cylinder, spark ignition (SI) engine, with alcohol blended gasoline (80% gasoline, 20% methanol, by volume) having copper coated engine [CCE, copper-(thickness, 300 ?) coated on piston crown] provided with catalytic converter with sponge iron and manganese ore as as catalysts and compared with conventional SI engine (CE) with pure gasoline operation. The exhaust emissions of carbon monoxide (CO) and unburnt hydrocarbons (UBHC) were determined at different values of Brake Mean Effective Pressure (BMEP) with Netel Chromatograph CO/UBHC analyzer. Aldehyde levels were determined by Dinitrophenyl Hydrazine (DNPH) method. Copper coated combustion chamber with alcohol blended gasoline with catalytic converter using sponge iron catalyst with air injection significantly reduced the pollutants in comparison with CE with pure gasoline operation.