Emission Analysis of a Methyl Alcohol-Gasoline Blend Operated Two Stroke SI Engine with Catalytically Activated Cylinder Head

ABSTRACT Experiments were conducted to evaluate the exhaust emissions from two stroke single cylinder, spark ignition (SI) engine, with methyl alcohol blended gasoline (80% gasoline, 20% methyl alcohol, by volume) having catalytically activated engine [CCE, copper-(thickness, 300 μ) copper being coated on the inner surface of the cylinder head] 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. Formaldehyde and Acetaldehyde levels were determined by Dinitrophenyl Hydrazine (DNPH) method. Copper coated combustion chamber with alcohol blended gasoline considerably reduced the pollutants in comparison with CE with pure gasoline operation.