Analysis of Combustion Characteristics with Catalytic Coated Cylinder Head in Two Stroke Spark Ignition Engine using Gasoline-Methyl Alcohol Blend

Abstract

Experiments were conducted to analyze the combustion characteristics of two stroke single cylinder, spark ignition (SI) engine, using gasoline blended with methyl alcohol (80% gasoline, 20% methyl alcohol, by volume) having catalytic coated engine [CCE, copper-(thickness, 300 microns) sprayed on the inner surface of cylinder head] and compared with conventional SI engine (CE) operating on pure gasoline. Combustion characteristics [peak pressure (PP), time of occurrence of peak pressure (TOPP), maximum rate of pressure rise (MRPR), maximum heat release (MHR) and temperature of burned gases at exhaust port opening (EPO)] were determined at full load operation of the engine by special P-? software package. Catalytic coated combustion chamber with methyl alcohol blended gasoline increased the PP, decreased the TOPP, increased the MRPR, increased the MHR and decreased the temperature of burned gases at EPO when compared with pure gasoline operated CE.