1, ethanol gasoline is gasoline with ethanol added, the amount of which varies from country to country, and the letter E is added in front of the gasoline label to differentiate it from ordinary gasoline.

2. The price is the same as regular gasoline.

3, according to the actual test situation, adding 10% ethanol, the impact on the power system is relatively small, can be ignored, but usually more than 20% of ethanol gasoline will need to change the engine and its related parts of the design of the material needs to be changed to adapt to the impact of ethanol gasoline.

Ethanol gasoline compared with ordinary gasoline it has the following advantages:

(1) high octane number (about 110), can be a substitute for unleaded anti-explosive additive methyl tertiary butyl ether.

(2) Ethanol is an oxygenated fuel with a high latent heat of evaporation, which reduces emissions.

(3) ethanol is an excellent solvent, can effectively eliminate fuel impurities in the fuel tank, fuel line system condensation.

Deficiencies are:

(1) The low calorific value of ethanol is lower than that of gasoline, and ethanol is 62% of gasoline; however, the theoretical amount of air for ethanol combustion is also less, and ethanol is 60% of gasoline.

(2) Due to the high latent heat of evaporation of ethanol gasoline, is not conducive to the evaporation of fuel at low temperatures, especially in the winter cold, easy to cause engine cold start difficulties. At the same time, the low boiling point of ethanol, high temperature is easy to produce gas resistance, so that the fuel supply is reduced or interrupted.

(3) The shelf life of ethanol gasoline is shorter than that of ordinary gasoline, and it is easy to produce delamination phenomenon after exceeding the shelf life.

(4) Ethanol is an excellent solvent, but also easy on rubber parts and synthetic non-metallic materials such as corrosion, softening, swelling or cracking.

References

Regular gasoline and ethanol gasoline, which is better? Both have advantages and disadvantages! ... CarFitter.com[cited 2017-12-22]