Which is better, unleaded gasoline or ethanol, and which is better for a car engine?

Gasoline is unleaded gasoline and it doesn't matter what 92 gasoline or ethanol gasoline you use is unleaded because leaded gasoline has long been banned in the world, but unleaded gasoline does not contain lead at all. It still contains trace amounts of lead in **, but its content is very low, with only about 1%g of lead per liter of gasoline. Ethanol gasoline is a fuel that is processed from grains and various plant fibers.

It is a new fuel made by blending ethanol and regular gasoline in a certain ratio. According to Chinese standards, ethanol gasoline is blended with "90% unleaded gasoline fuel ethanol". When the ethanol content in ethanol gasoline is controlled within 10%, the corrosion is very slight, and when the ethanol content exceeds 15%, additives must be injected into the fuel to inhibit the formation of corrosion.

Another point is that ethanol itself has a certain degree of water absorption, and if ethanol gasoline is stored for a long time, its water content will gradually increase, which will bring certain combustion problems to the engine. After replacing ethanol gasoline, the most obvious feeling of pure gasoline is that it is not durable. On the one hand, it is caused by a drop in power.

After all, in some cases after the power drops, you should press the throttle more. Another important reason is that ethanol has a smaller air-fuel ratio than gasoline. Less air is required to burn the same amount of ethanol.

In order to consume the air that enters the cylinder each time the ECU controls the increase in the amount of fuel injected.

In fact, the use of ethanol gasoline is not unique to us. Brazil was the first country to use it, and the United States, Europe, and other countries also became popular for some time. The biggest advantage of ethanol gasoline is high explosion resistance, low emission pollution, it is very convenient to obtain fuel component ethanol, and the technology is mature.

As long as the ethanol content is controlled within 10%, the car can almost directly use ethanol gasoline without special modifications. To sum up, in recent years, various information and news about the so-called ban on ethanol gasoline in Europe have been circulating on the Internet. It is difficult to comment because the popular reviews of a car are not field-surveyed and do not check the specific policies of those countries.

Fuel ethanol is indeed hydrophilic, but how does it come into contact with the water in a sealed tank? At this point, some people will say that the air contains water vapor, but it is difficult for the air to enter the tank; Because gasoline is a volatile fuel, it is volatile most of the time. Fuel oil expands by volume from gas to liquid.

In order to prevent the internal pressure from breaking the tank, a "carbon canister system" was designed. The fuel vapor flows through the pipe to the canister, where the activated carbon adsorbs the fuel and squeezes the gas out of the breathing hole. Can air still get into the tank?

The products of ethanol combustion are mainly carbon dioxide and water. Add 10% equivalent to reducing gasoline emissions such as hydrocarbons, nitrogen oxides, carbon monoxide, particulate matter, etc. People need to breathe, and car users are no exception; So reducing emissions and improving air quality with E10 ethanol gasoline seems to be good for everyone, especially for the more than 1 billion people who don't drive.

Unleaded gasoline will also have a good feeling for the car, you can maintain your own engine, there will be no big odor, and you can protect your respiratory tract. **It's also very suitable. Very eco-friendly.

Ethanol gasoline is better, this thing has relatively low emissions after use, ** is relatively cheap, relatively speaking, it is still very good.

Unleaded gasoline is relatively good for the engine, no corrosiveness, no harmful substances.

Ethanol gasoline is better. Because unleaded gasoline may still emit gases, particulate matter and condensate when burned, in addition to unleaded hail, the harm to human health still exists.

Ethanol gasoline is a new type of alternative energy formed by mixing ethanol and ordinary gasoline into fuel processed from grain and various plant fibers in a certain proportion. According to China's national standard, ethanol source gasoline is made by blending 90 percent ordinary gasoline with 10 percent fuel ethanol.

Non-peelite lead gasoline is a kind of gasoline that does not add tetraethyl lead as an anti-seismic explosion additive in the refining process, and unleaded gasoline only contains a trace amount of lead, generally one percent of one gram per liter of gasoline. Unleaded gasoline is not harmless gasoline, and unleaded gasoline fundamentally solves the problem of lead pollution in automobile exhaust.

Pacific Automobile Network] Unleaded gasoline is good. Compared with the calorific value generated after combustion, ethanol itself is 40% lower than ordinary gasoline, so if you want to get the same power output, ethanol gasoline will have about 5% more fuel consumption than ordinary gasoline, so if you want to maintain good fuel economy, its power will decrease.

Gasoline is divided into leaded gasoline (out of the market), unleaded gasoline and ethanol gasoline, and many vehicles now recommend the use of more environmentally friendly unleaded gasoline and ethanol gasoline, so let's talk about the difference between ethanol gasoline and unleaded gasoline.

Ethanol gasoline: Ethanol gasoline is made of 90% ordinary gasoline and 10% fuel ethanol, and the unified identification is E92, E95 and E98, and E is the number of ethanol.

Unleaded gasoline: Unleaded gasoline refers to gasoline with a lead content below and no tetraethyl lead is added as an anti-shock explosion additive in the refining process. The use of unleaded gasoline can effectively control harmful substances in automobile exhaust gases, reduce pollution such as hydrocarbons (smoke caused by HC), carbon monoxide (CO toxicity) and nitrogen oxides (NOx form acid rain).

Difference: The calorific value of ethanol gasoline is lower than that of unleaded gasoline, and the power of the car will be reduced after use, and it is relatively fuel-efficient, but the exhaust emissions are lower, more environmentally friendly, and it is relatively cheaper, which is obviously better. At present, the domestic vigorous promotion of ethanol gasoline means that unleaded gasoline will also be withdrawn from the market.

It should be noted that ethanol gasoline and unleaded gasoline cannot be mixed for a long time, because the impurities in unleaded gasoline will accumulate in the fuel tank, and ethanol has a strong cleaning effect, which will clean these impurities, thereby blocking the oil circuit and causing the engine to work abnormally. If you have to mix it, you can choose ethanol gasoline with a similar grade, which will have less impact on the working condition of the engine.

1.Of course, ethanol gasoline: the pure gasoline mentioned here is actually what we often call unleaded gasoline (containing trace amounts of lead), and ethanol gasoline refers to the addition of a certain proportion of fuel ethanol (commonly known as alcohol) to ordinary unleaded gasoline.

2.From an environmental point of view, ethanol gasoline is undoubtedly better, because the ethanol in ethanol gasoline is a renewable resource, and its emissions will be cleaner as a vehicle energy source.

3.However, the resources of pure gasoline are limited and cause a lot of pollution to the atmosphere. Becoming a strategic energy source is not easy in the long run.

4.If you just look at the driving performance of the car, it is clear that pure gasoline will be better. After all, the latent heat of vaporization of ethanol is large, and the vaporization temperature under the theoretical air-fuel ratio is higher than that of conventional gasoline.

It affects the formation of the mixture and the combustion rate, resulting in a decrease in the power, economy and cold start of the car, which is not conducive to the acceleration of the car. These are also the reasons why many car owners are not very interested in ethanol gasoline.