Currently, most cars are bi-fuel, that is, they can be fueled with alcohol or gasoline. This idea has pleased consumers, as they can opt for the cheapest fuel, but sometimes the cheapest can be expensive. The alcohol-fueled car develops greater power, as the combustion of this fuel is cold, as its explosion becomes greater and, as a consequence, the vehicle consumes more alcohol. In the case of the gasoline-powered engine, the power becomes lower and the economy at the time of burning makes the car more economical.
The big issue is that alcohol has a lower market price than gasoline, bearing in mind that alcohol is derived from sugar cane and gasoline from petroleum. With so many options, how can you opt for economy when refueling a dual-fuel car?
The correct option is to relate the price of alcohol and gasoline, based on the division alcohol / gasoline. If the result of this division is less than 0.70, fill it with alcohol, if it is greater than 0.70, use gasoline. Specialists arrived at this index, as they found that alcohol cannot exceed the price of gasoline by 70%. The table below shows the relationship between fuel prices, showing when to refuel with alcohol or gasoline, in relation to possible market prices.
Use alcohol if the price is equal to or less than those mentioned for gasoline.
by Mark Noah
Brazil School Team
Graduated in Mathematics
Equation - Math - Brazil School
Source: Brazil School - https://brasilescola.uol.com.br/matematica/carros-bicombustiveis.htm