Ethanol fuel mixtures have "E" numbers which describe the percentage of ethanol fuel in the mixture by volume, for example, E85 is 85% anhydrous ethanol and 15% gasoline. Low …

Both vehicles accelerate about 0.4 seconds (15-80 mph) faster with high-octane E25 in the OEM condition. Increasing compression ratio in the F150 further improved acceleration with the E25 …

Jan 1, 2011 · The natural E25 oxidation process due to aging under atmospheric conditions has been investigated. To evaluate aging effects on the properties of commercially available fuel …

The tendency of an SI engine fuel to resist auto-ignition and engine knock is measured as the octane number, a critical performance parameter for SI engines. In the United States, the …

Sep 1, 2018 · There is growing interest in making use of fuels with increased octane number to help improve engine efficiency through increased compression ratio, downsizing with …

Some have suggested gasoline blended with 25% ethanol could deliver fuel with these characteristics. Even at elevated octane levels, E25 would still have lower energy content than …

Intermediate blends are for use in FFVs and offer owners more options. Common blends, in addition to E85, include E25 (25% ethanol, 75% gasoline) and E30 (30% ethanol, 70% …

Rising demand and tightening supplies of octane are reflected by the growing price spread between regular gasoline (87 octane) and premium (91-94 octane). Octane demand could be …

High Octane is the key enabler for higher torque, power and efficiency. Ethanol has high cooling effect which provides additional benefits for higher “effective” octane – 4x greater than E0.

Feb 3, 2016 · The high-octane fuel study found that E25 and E40—when used to fuel a vehicle optimized for the blend—could achieve volumetric fuel-economy parity with E10.