Study on Performance and Emission of a Port-Fuel Injected SI Engine Fueled with Acetone-Butanol-Ethanol (ABE)
Abstract: ABE (Acetone-Butanol-Ethanol, ABE) fermentation is one of the major methods to produce bio- butanol. The goal of this study is to investigate the combustion characteristics of the intermediate product in the production of butanol, namely ABE in a spark-ignited engine and hence to make an attempt to affirm its potential used as an alternative fuel for ICEs. Acetone, n-butanol and ethanol were blended in a 3:6:1 volume ratio and then blended with pure ethanol-free gasoline with dif-ferent ratios to create various fuel blends. These blends were tested in a port-fuel injected spark ignited engine and their performance was evaluated through measurements of in-cylinder pressure, and various exhaust emissions. ABE is combusted faster than gasoline and n-butanol due to its higher laminar flame speed. Brake Special Fuel Consumption (BSFC) was seen to increase and NOx was seen to decrease with ABE fraction increasing, with pure ABE achieving near-zero NOx.
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