The miscibility of blends of gasoline and hydrous ethanol was investigated experimentally at - 25 degrees C and - 2 degrees C. Furthermore, the maximum water content was found for ethanol in flex fuel blends. The results strongly indicate that blends containing ethanol with a water content above that of the ethanol/water azeotrope (4.4% water by mass) can be used as Flex Fuel blends together with gasoline at ambient temperatures of 25 degrees C and 2 degrees C, without phase separation occurring. Additionally, it was shown that the ethanol purity requirement of ethanol-rich flex fuel blends falls with increasing ethanol content in the gasoline-rich flex fuel blend.
|Journal||Energy Sources. Part A. Recovery, Utilization, and Environmental Effects|
|Publication status||Published - 2009|
- ternary phase diagram
- flex fuel
- flex fuel vehicle
- phase separation
- hydrous ethanol