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Performance Comparisons of Spark-Ignition Engine Fueled with Butanol/Gasoline and Ethanol/Gasoline Blends

The performance comparisons of engine fueled with butanol/gasoline and ethanol/gasoline blends were tested. It was indicated from the experimental results that, compared with pure gasoline, power and fuel economy of engine fueled with butanol/gasoline and ethanol/gasoline blends reduced slightly, while HC and CO emission reduced significantly, and NO emission increased. It can be concluded that, the performance of engine fueled with butanol/gasoline blends was better than ethanol/gasoline blends, and B20 was better than B30.