18-03-2014, 11:14 AM
Dual fuel And Multi Fuel
Dual fuel .pptx (Size: 1.41 MB / Downloads: 24)
Bi Fuel
Run on two fuel stored in two separated tanks
Only one is injected at single time
Gasoline or (CNG, H2, LPG)
Diesel or (CNG, H2, LPG)
Advantage at high speed as we can use higher octane rating fuel at high speed
Dual Fuel or Flexible fuel
Engine run on two blended fuel stored in one tank
Normally Gasoline + Ethanol or Methanol
Capable of burning any proportion of the resulting blend in the chamber as injection and spark timings are adjusted automatically according to the actual blend detected by electronic sensors
Range 100%(E100) ethanol to 100% gasoline but in cold country generally use 85% ethanol(E85) and 15% gasoline
Ethanol produce less energy per liter of gasoline. So fuel economy is less with ethanol
Multi Fuel
Engine can operate on more than two fuels
Can use CNG, Gasoline, Diesel, Gasoline + Ethanol
Switching among fuel is done manually
Not necessarily under powered
Not got enough success as compared to bi fuel and dual fuel
In 2004 GM do brasil introduced the Chevrolet Astra 2.0 with a "MultiPower" engine built on flex fuel technology developed by Bosch of Brazil, and capable of using CNG, ethanol and gasoline (E20-E25 blend) as fuel