TESTING OF SPARK IGNITION ENGINE WITH ALCOHOL

Individual transport favors SI engines due to many reasons such as less vibration, more comfort, and easy stop-and-go service. These engines are symbols of advanced technology and are known for modern civilization. The engines, which execute a single power stroke in two revolutions of the crankshaft which give higher workability, which means they can convert more amount of heat into work. Conventional fuels generated from nature are dwindling due to high demand because of the increase of automotive engines are being replaced with renewable fuels, which have got many advantages like they are regenerated in nature, less cost, and emit lower pollution levels. Alcohols, renewable fuels are volatile and they possess many advantages over conventional fuels. Tests are executed to determine workabili ty and products of the exhaust of the engine with the change of a ratio of compression executing one power stroke of two revolutions of the crank SI engine with CH3OH blended petrol (20% CH3OHl, 80% petrol by vol) having a coating of cuprum, [CCE, cuprum (thickness, 0.3 mm) coated on piston's top portion, liner's inner portion and head of the cylinder] and validated with the data of standard engine SI engine (CE) with neat petrol operation. Workability factors and products of exhaust were taken into account with CCE with CH3OH mixed with petrol and correlated with CE with the neat operation of petrol. CCE exhibited better workability and a reduction of products of exhaust with respect to CE with experimental fuels.