Team from GM, Ford, FCA reviews how to calculate engine efficiency benefits of high octane fuels

Green Car Congress

The preflame reactions are a strong function of temperature, so evaporative cooling from the fuel can also play a significant role, which is particularly important for fuels containing alcohol. To achieve continued improvement in engine efficiency and CO 2 emissions, it is critical to quantify the roles of fuel octane rating and alcohol content. Alcohol and gasoline-alcohol blends also offer efficiency benefits independent of their octane value.

2015 188

Perspective: US Needs to Transition to Hydrous Ethanol as the Primary Renewable Transportation Fuel

Green Car Congress

Under the Proalcool Program, sugar companies were ordered to increase production and the state-run oil company, Petrobras, was required to make álcool (ethanol) available at its fuel stations. The growth in hydrous ethanol, which uses a blend of 94-95% ethanol to 5-6% water, rapidly increased during the 1980s, with consumption peaking in 1989. Named flex-fuel vehicles (FFVs), these automobiles run on gasoline, ethanol, or any blend of the two. by Brian J.

2009 261