PERFORMANCE TESTING OF 4-STROKE SINGLE CYLINDER VARIABLE COMPRESSION S.I ENGINE WITH BLENDING OF PROPANOL WITH GASOLINE

Increasing global concern due to air pollution and to the limited oil reserves has generated much interest in the environmental friendly fuels alternative to petroleum based fuels, in particular for the transport sector in which the energy consumption depends almost exclusively on fossil fuels. Alcohols, because of their potential to be produced from renewable sources and because of their high quality characteristics for spark-ignition (SI) engines, are considered quality fuels which can be blended with fossil-based gasoline for use in internal combustion engines. . The performance parameters will investigate were Fuel consumption ,Brake specific fuel consumption and Brake thermal efficiency determine and exhaust emission such as carbon monoxide(CO),carbon dioxide(CO2), hydrocarbon (HC) and oxides of nitrogen (NOx) are also measured. The results shows that as the compression ratio increases actual fuel consumption decreases, BSFC also decreases and thus the brake thermal efficiency improved and the propanol at highest brake thermal efficiency obtained at compression ratio 9 and also reduction in percentage carbon monoxide, unburned hydrocarbons.