Advantages and disadvantages of ethanol gasoline for vehicles Using ethanol gasoline as a clean motor fuel oil has the following advantages:
1. High octane and good anti-knock performance.
2. The oxygen content of ethanol reaches 34.7%. With 10% ethanol in gasoline, the oxygen content can reach 3.5%.
3. Using ethanol gasoline can effectively reduce vehicle exhaust emissions and improve emissions. National research shows that E15 ethanol gasoline (the ethyl alcohol content of gasoline is 15%) has a 16.2% reduction in carbon hydrocarbon emissions and a 30% reduction in emissions. of carbon monoxide compared to pure unleaded automobile gasoline.
4. Fuel ethanol production resources are abundant and the technology is mature. When less than 10% is mixed in gasoline, gasoline with ethaneol can be used directly without any major change of use.
The disadvantages of ethanol gasoline for automobiles in terms of combustion value, power and corrosion resistance:
1. The calorific value of ethanol is 60% of that of conventional one. reports that if the car uses a gasoline blend containing 10% ethanol without any modifications, the engine's fuel consumption will increase by 5%.
2. The latent heat of vaporization of ethanol is large, and the evaporation temperature under the theoretical air-fuel ratio is higher than that of conventional gasoline. This affects the formation and combustion rate of the mixture, leading to decreased economy and cold starting performance, which is not conducive to vehicle acceleration.
3. Ethanol produces acetic acid during the combustion process, which has a corrosive effect on metals.automotive rates, particularly copper. Relevant tests have shown that when the ethanol content of gasoline is between 0 and 10%, there is almost no metal corrosion. However, when the ethanol content exceeds 15%, effective corrosion inhibitors must be added.
4. Ethanol is an excellent solvent and can easily cause slight corrosion, swelling, softening or cracking of automotive gaskets and other non-metallic synthetic materials.
5. Ethanol easily absorbs water. When the water content of vehicle ethanol gasoline exceeds the standard index, separation of the liquid phase occurs easily.
All ethanol gasoline will be used starting March 15. The unified identification of ethanol gasoline at gas stations is E90, E93 and E97 is the label of vehicles using ethanol gasoline for automobiles, you can adder. unleaded automotive gasoline of the same quality. Similarly, ethanol vehicle gasoline of the same brand sold at designated service stations may also be added to qualified unleaded vehicle gasoline. However, you should choose to refuel at a reputable, quality-assured gas station. Avoid adding unleaded gasoline containing water to vehicles and counterfeit and substandard petroleum products, as this may prevent the vehicle from operating normally.
If a car that has traveled more than 30,000 kilometers is filled with ethanol gasoline for the first time, if the fuel tank and oil lines of the car are not cleaned , the car's oil lines will be clogged and the car will stall. Even after cleaning, a small amount of impurities still enter the fuel tank. After exhausting the first fuel tank, the car must be inspected and cleaned. And if it is a new car with a mileage less than 30,000 kilometers, there is no need to clean the fuel tank and oil lines before adding gasoline to the ethanol.
Entered. According to information posted on the official Weibo website, Santang Zhongwang gas station is suspected of discharging sewage, exhaust gas and other pollutants. This has had a certain impact on the environment. In 2023, the relevant services sealed the gas station. Gasoline stations are refueling stations that service cars and other motor vehicles and retail gasoline and oil.