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This paper represents an experimental investigation to evaluate the effect of magnetic field on exhaust emissions and engine performance of four-stroke, single piston spark-ignition engine working with (10% vol.)Ethanol-Gasoline blends. Carbon monoxide CO, carbon dioxide CO2 and unburned hydrocarbon HC are examined during running of the engine with and without the presence of magnetic coils. The engine performance parameters (brake power, brake specific fuel consumption and brake thermal efficiency) are investigated too .Two magnetic coils with different intensities (1000 and 2000 Gauss) were used . The magnetic coil is placed on the line of fuel supply before the carburetor. All tests were conducted at a wide open throttle (WOT) , compression ratio 10:1 , speed of 2000 rpm and ignition timing ( between 5 0 and 30 0 BTDC ) . Results show a significant reduction in exhaust gas emissions when applying the magnetic field. A maximum reduction of 68.8 % of CO, 15 % of CO2 and 42.5 % of HC are observed when using 2000 Gauss magnetic coil. Moreover, it was noticed that all engine-affecting parameters were improved. Running the engine with 2000 Gauss and 10 vol.% ethanol-gasoline blends shows better results ( concerning pollution emissions and brake thermal power ) than 1000 Gauss magnetic coil . يٍخادٌا قاسخدلاا ثاوسذِ ِٓ تيشاغٌا ثارىٌٍّا داعبٔا ًيٍمح جيصّب ًّعح يخٌا لاا يىٔازي – ٓيٌوشاىٌا ظٕغٌّّا ًيٍخ يٍع دعز ًصىٌّا تعِاج تسدٕهٌا تيٍو تيىئاىيٌّا تسدٕهٌا ُسل – ًصىٌّا .

Reduction of Pollutant Emission in Ethanol-Gasoline Blends Engines with Magnetic Fuel Conditioning