Alcohol Blend Comparison Economy Fuel Economy 
Green Car Congress
MAY 1, 2009
The researchers found that the combination of technologies allowed improvements in fuel economy over the engine drive cycle. Furthermore, a reasonable improvement in dilution tolerance could be achieved at higher engine loads, which could eliminate over-fueling requirements under such conditions. Cairns et al. SAE 2009-01-0138).
Green Car Congress
MARCH 27, 2020
Co-Optima estimations indicate that significant fuel economy improvements are possible with improvements to RON, S, and HOV. The report highlights researchers’ answers to three vital questions: What fuels do engines want? At a 30% blend level, this equates to an 18% reduction in emissions for the finished fuel.
Green Car Congress
AUGUST 30, 2009
The oil price shocks of the 1970s led the Brazilian government to address the strain high prices were placing on its fragile economy. d) further provides for alcohol blends as follows: Special provisions for alcohol blends. (1) Donovan, CEO Renergie, Inc. Use of Hydrous Ethanol in Brazil. 40 CFR § 80.27(d)
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