CONTROL OF POLLUTANTS WITH CATALYTIC CONVERTER AND COPPER COATED CYLINDER HEAD IN METHANOL- GASOLINE BLEND OPERATED TWO STROKE SI ENGINE

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, 2 0% methanol , by volume) having copper coated engine [CC E , copper - (thickness, 300 μ) coated on inner surface of the cylinder head ] provided with catalytic converter with sponge iron and manganese ore as as catalyst s 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.