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Conversion of experimental engine of internal combustion from gasoline to E85 fuel is discussed. Bio-ethanol fuel is briefly introduced; its physical, chemical properties are shown. Cold start-up problems, flammability limits, self ignition temperature, octane number, corrosive properties are shown. E85 fuel is introduced and gasoline - E85 flexible fuel operation is discussed. Introduced are the experimental engine, its main parameters, the magnet-transistor ignition system and the fuel supply system. The article details the conversion of the ignition system, the structure and operation of the spark advance modification device. Discussed also are the conversion of the fuel supply system and the carburetor nozzle to E85 fuel using a flow metering device. The test bench used for the experiment is also introduced. Discussed are the properties to be determined during the experiment, the applied formulae and the calculated results for gasoline and E85 fuel. Engine output and fuel consumption are measured, and operation on E85 is optimized. Separate chapter deals with the comparison of measurement results.

Conversion of internal combustion engine from gasoline to E85 fuel