Estimates of DI Hydrous Ethanol Utilization for Knock Avoidance and Comparison to a Measured and Simulated DI E85 Baseline
نویسنده
چکیده
The use of hydrous ethanol DI fuel for knock avoidance in conjunction with PFI gasoline is investigated. The properties of the hydrous ethanol are described and constraints on the ethanol-water-hydrocarbon mixtures quantified. After a selection of the appropriate water-ethanol blends, calculations are performed using an engine simulation coupled to a kinetic calculation to determine the required hydrous ethanol for knock-avoidance. The volume requirements of hydrous ethanol at two levels of water concentration are then compared to measured and simulated values for DI E85.
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