English to Polish Tech/Engineering Automotive / Cars & Trucks

Higher octane gasoline contains the same energy content as lower octane gas, but it can handle higher compression ratios that improve combustion efficiency and power. Alcohol fuels such as methanol and ethanol actually contain LESS energy content than gasoline (57,000 BTUs for methanol and 76,000 BTUs for ethanol versus about 114,000 BTUs for gasoline) but are good racing fuels because they can handle higher compression ratios and contain additional oxygen that adds to combustion efficiency.

Alcohol fuel mixtures have to be almost twice as rich as those for gasoline. This decreases an engine’s volumetric efficiency slightly because the extra fuel displaces air, but also allows the engine to make about 10 percent more power if the engine is built to optimize performance on alcohol fuel.

W sensie że mieszanka paliwa z alkoholem musi być niemal podwójnie bogatsza niż w przypadku samej benzyny? Zmniejsza to nieznacznie sprawność wolumetryczną silnika (alkohol bogata mieszanka ??), ponieważ dodatkowe paliwo wypiera powietrze, ale zarazem pozwala silnikowi wygenerować moc o niemal 10% większą, jeśli silnik został zbudowany z myślą o zoptymalizowaniu osiągów na paliwie z alkoholu.