José Ricardo Sodré, Mechanical Engineering, Pontifical Catholic University of Minas Gerais, Av. Dom José Gaspar, 500, CEP 30535-610, Belo Horizonte, MG, Brazil and Guilherme Teixeira Correa Pinto, Engine Engineering Division, FIAT Powertrain Ltd., Rodovia Fernão Dias, Km 429, Betim, MG, Brazil.
The general working characteristics of flex-fuel engines with different gasoline-ethanol blend concentrations are presented. Analysis of emissions was performed in a 1.4-liter engine powered vehicle, tested in a chassis dynamometer following FTP-75 cycle. The engine was then tested for performance in a dynamometer bench, according to NBR/ISO 1585 standard. Ethanol concentration in gasoline was varied from 0 to 100%. The results establish the ideal concentration of each fuel to optimize the engine performance and exhaust emissions.
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