REVIEW OF ETHANOL-GASOLINE PETROL ENGINE PARAMETERS BY EXPERIMENTAL & MINITAB TOOLS

The aims of this work are to obtain the characteristics and the performance optimization of the spark-ignition engine and single-cylinder by using the gasoline-ethanol fuel blend in composition 15%-80% . The engine operates on different engine speeds in the range 2000–7000 RPM (increment 1000 RPM), ignition timing in interval 12–28 BTDC (increment 4 BTDC) and compression ratio in range 12–13 (increment 0.5). All the performance engine parameters better than gasoline engine performance except for specific fuel consumption and thermal efficiency that is worse than. Those results will be obtained when the engine parameters work on the compression ratio, 16-20 BTDC (before top dead center) of ignition timing, and higher than 4000 RPM (revolution per minute). Meanwhile, the optimization of the engine performances has been done by using Box Behnken design of response surface methodology. The result of this study has revealed that at optimal parameters the values of the brake power, brake torque, thermal efficiency, mean effective pressure, specific fuel consumption,