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Figure 2. Evolution use bioethanol The diagram above is fairly self-explanatory. The current trend toward biofuels is merely a return to origins. Otto cycle engine (petrol) and diesel were originally to be fueled with ethanol (in a startup called gasohol, the name still known in some parts of the world such as Brazil) and oil, respectively. In 1900, Rudolf Diesel introduced the engine that bears his name powered by peanut oil. Because science and technology have been progressively adapted by minor modifications, the engines for use with this oil derivatives, Otto existing engines can not operate in high blends of bioethanol, unless specifically adapted. The following chart shows the compatibility of existing fleets of vehicles Otto cycle with different proportions of bio-ethanol mixture. Became the first country to challenge the independence of the oil transportation was Brazil, which from 1973 began to mix gasoline and ethanol at a ratio of 22:78. In 1979, Brazil produced the first cars that could run on hydrated alcohol (95% ethanol and 5% water), later, in 1980 most of the cars produced were designed to work exclusively with ethanol Ethanol can be used in practice in mixtures with gasoline in concentrations of 5 or 10%, E5 and E10 respectively, requiring no changes to today's engines, according to the experience. However, European legislation on the volatility of petrol set the ethanol mixtures E5. Higher concentrations are allowed in countries such as USA, in fact, all petrol vehicles sold in the U.S. are able to operate with E10, and that is accepted by all manufacturers, serves as an example the fact that in 2006 in this country 50 % of petrol sold was mixed with bioethanol E10 the majority share In Spain and in Europe, the main application in the automotive sector is the development of bioethanol Ter Ethyl butyl ether (ETBE), an additive that improves oxygenation of the mixture to the combustion (increases the octane fuel).
GAIA BioEtanol