The octane in American gasoline is calculated differently and is the average of the RON and MON (motor octane number).
Generally, American grades of fuel are 4 to 6 octane lower than comparable grades of European gasoline.
The open interior layout maximizes space for tools, materials and equipment.
In 2014 Brazil produced 23.4 billion liters (6.19 billion U. liquid gallons), representing 25.2 percent of the world's total ethanol used as fuel. EPA designated Brazilian sugarcane ethanol as an advanced biofuel due to its 61% reduction of total life cycle greenhouse gas emissions, including direct indirect land use change emissions.
However, some authors consider that the successful Brazilian ethanol model is sustainable only in Brazil due to its advanced agri-industrial technology and its enormous amount of arable land available; uses modern equipment and cheap sugar cane as feedstock, the residual cane-waste (bagasse) is used to produce heat and power, which results in a very competitive price and also in a high energy balance (output energy/input energy), which varies from 8.3 for average conditions to 10.2 for best practice production. and requiring just a minor adjustment on regular gasoline engines.
E85, which contains 15 percent gasoline and 85 percent enthanol. Not on bandwagon Even though senior powertrain executives such as Nicholson say they need higher octane fuel to help them increase engine efficiency, you don’t usually hear automakers themselves lobbying loudly for it, except at industry conferences and dinners with reporters.
Premium fuel costs around 53 cents more per gallon than regular in many parts of the country -- a fact that has many motorists grumbling.
But if the EPA does mandate higher octane gasoline, I think the cost difference between regular and premium will evaporate pretty quickly. When the EPA decided to dramatically reduce sulfur in diesel fuel a decade ago, the oil industry cried foul, saying diesel prices would increase because of the added expense of refining the cleaner fuel.
Today, diesel in most areas costs less than regular gasoline.
We have had requests to regulate octane for many years.”But Grundler said the agency couldn’t regulate octane until 2007, when the Supreme Court decided that greenhouse gases are harmful.
And even then, it wasn’t as easy as asking experts to settle on a new higher octane rating. For us to intervene and set fuel standards, we need to show that there is an air quality benefit or that, absent regulations, that it is somehow inhibiting the after-treatment or other parts of the vehicle.
Higher octane gasoline likely won’t be available until the next set of fuel economy and emissions standards take effect after 2025.
The deliberations about how high to raise octane are still probably a few years off. Europe as the model In Germany for example, regular gasoline is usually 95 octane while premium is 100, based on the RON (research octane number) scale.
Speaking during a question-and-answer session at the end of a panel discussion on fuel economy, here’s what Grundler had to say about octane:“After 2025, we should talk about what the future fuels should look like and what is the optimum mix of vehicle and fuel technologies.