What is the difference between 92 and 95 gasoline?

The gasoline label represents the anti-knock resistance, and the larger the mark, the better the anti-riot ability, which has nothing to do with the quality of the gasoline itself, nor does it mean that the higher the mark, the less impurities there will be. What is Knock Resistance? The first thing about this kind of detonation is the inside of the engine, where the mixture is ignited by the spark plug and the energy is released to drive the piston to do work.

To put it simply, the detonation is caused by the abnormal combustion inside the engine, because the spontaneous combustion of a part of the mixture inside and the ignition ignite the gas form an energy impact, resulting in the phenomenon of knocking the cylinder, and the detonation brings the loss of power. The anti-riot substance is the isooctane in gasoline, the higher the label, the higher the isooctane content, and of course, the stronger the anti-knock performance. Some drivers will feel that the power of the car with 95 gasoline will be better, in fact, this is just a psychological effect, each car factory manual has recommended the use of 92 or 95 gasoline, according to this there is no problem, because what gasoline a car uses is related to the matching of the engine system, in essence, it is related to the compression ratio of the engine, the higher the compression ratio, the greater the power, the higher the efficiency, but the stability is poor, so the need for gasoline with high knock resistance.

The compression ratio is not reached, and the use of higher gasoline will not help the power, at most it will be slightly better in terms of cleanliness and low carbon, but the effect is not very obvious. There are often friends encountered, occasionally special circumstances out of oil, the two oils are mixed, generally there will be no big problems, but can not be used for a long time, which will cause detonation, lack of power, etc. The same car with a number 95 will not have a big problem occasionally using a number 92 gasoline, but if it is long-term, it will make the frequency of detonation more frequent and the wear and tear on the engine will be aggravated.

In the final analysis, the biggest difference between No. 95 and No. 92 is the difference in riot resistance, that is, the isooctane number contained is different. <>

The main function of the gasoline marking is to mark the anti-knock resistance, which has nothing to do with the quality of the gasoline itself, not that the higher the label, the fewer impurities in the gasoline. In fuel, the anti-knock substance is isooctane. No. 92 gasoline, which contains 93% isooctane.

The higher the grade, the better the combustion stability of the gasoline and the higher the engine will not work abnormally due to deflagration. This is also the reason why engines that use 95 gasoline should never be filled with 92 gasoline, because it will cause damage to the engine. Since a high-grade engine can't be filled with low-grade fuel, what happens the other way around?

Is it possible to extend the life of the engine by filling the low-grade engine with high-grade fuel? The answer is no! In addition, there is a long-standing argument that high-grade gasoline for low-grade engines is more powerful and more fuel-efficient.

No. 95 gasoline does have a slight advantage in terms of fuel consumption, but considering the price difference with No. 92 gasoline, then the overall cost of use is not saving. Therefore, no matter what kind of car you drive, you only need to fill the corresponding grade of fuel according to the requirements of the manual when refueling, and you don't need to deliberately fill high-grade gasoline, let alone fill fuel that is lower than the required grade. <>

1. The octane number is differentNo. 92 gasoline is rich in 92% isooctane, 8% n-heptane; Whereas 95 gasoline is rich in 95% isooctane and 5% n-heptane.

2. The power and fuel consumption performance are differentNo. 95 gasoline has an advantage over No. 92 gasoline in terms of power fuel consumption because its isooctane content is higher than that of No. 92 gasoline.

3. **Different:No. 92 gasoline is cheaper than No. 95 gasoline, due to market competition and geographical factors, the oil price of each gas station is not the same, for example, the gas station near the city center is better because of the location, and there are more people who refuel, generally ** will be a little higher, and in the suburbs and other more remote gas stations, the overall oil price will be lower. But no matter how it changes, at the same gas station, 92 gasoline is cheaper than 95 gasoline.

Precautions for gasoline use.

Vehicle No. 92 gasoline marking, packaging, transportation, storage and delivery acceptance shall be carried out in accordance with SH 0164. If manganese is contained in motor gasoline, it must be protected from light during transportation and storage.

The pipelines, containers and pumps of No. 92 gasoline for vehicles in the process of transportation, storage and transportation should be dedicated, and if you have to use the pipes, containers and pumps used by leaded gasoline, they must undergo special treatment before they can be used. Gasoline is flammable, explosive dangerous goods, storage and transportation sites are strictly prohibited from fireworks, loading and unloading must use copper tools, in case of sparks, when pumping oil or pouring tanks, oil tanks and live pipes must be grounded with conductive metal wires.

Hello, 92 gasoline and 95 gasoline cleanliness are not the same, gasoline octane number is not the same, if it is a direct injection and turbocharged engine, it is recommended to use 95 gasoline.

Question: I added 3 tanks of 95 gasoline in the New Year, and now switching to 92 will have an impact on the car.

The answer has little impact, and now the 92 gasoline oil is also good, and the gasoline required by the manufacturer to be filled must be relatively high, if it is a direct injection engine in the cylinder, it is recommended to add 95 gasoline.

Question: Sylphy is 92, the new car has added 3 boxes of 95, and now the switch to 92 will have an impact on the car.

The answer has no effect, the original car requires 92 you have been adding 95 is fine, 95 gasoline is one level higher than 92, 95 has been added before, and now 92 is also in line with the manufacturer's requirements, no problem, rest assured to use.

A complete range of additives can reduce deflagration and reduce air pollution.

The octane number is slightly higher, which can be understood as more durable.

Different vehicles have requirements for gasoline, and some high-end cars require the use of 95 gasoline.

"95 and 92 are both gasoline labels, which represent the octane number of gasoline, and the higher the label, the higher the octane number, the better the anti-knock resistance of gasoline. Many car owners believe that high-grade petrol will be cleaner than low-grade petrol, but in fact the petrol grade has nothing to do with whether the fuel is clean or not. Refueling according to the compression ratio of the engine or the requirements of the car instruction manual can be more scientific and economical, and can give full play to the efficiency of the engine.

The applicable compression ratio is different, the car with the compression ratio between the 92 gasoline should generally use 92 gasoline, and the car with the compression ratio greater than 95 gasoline should use 95 gasoline; The octane number of No. 93 gasoline is lower than that of No. 95 gasoline, that is, No. 92 gasoline contains 92% of isooctane, while No. 95 gasoline has an octane number of 95%.

1. The content is different.

It is clear that there is no difference between 92 gasoline and 95 gasoline, and the oil quality is the same. The main components analyzed are that 92 gasoline is composed of 92% isooctane and 8% n-heptane, while 95 is composed of 95% isooctane and 5% n-heptane, and the reason why 95 gasoline is slightly more expensive is that the proportion of isooctane is larger.

Isooctane also has another role is anti-knock, that is, the higher the proportion of iso-octane, the better the anti-knock performance. Each engine will be given a comprehensive evaluation before leaving the factory, and the requirements for anti-explosion will be put forward according to the performance and other data characteristics of the engine, that is, what grade of gasoline needs to be used.

2. **Different.

95 gasoline is a little more expensive than a tank of 92 gasoline. Use the ** of 95 gasoline minus the ** of 92 gasoline and multiply it by 8, you will not get the ** difference of the fuel consumption of the car 100 kilometers, for example, now the ** of 92 gasoline in our region is yuan liters, and the ** of 95 gasoline is yuan liters, then this model uses 92 gasoline and uses 95 gasoline 100 kilometers ** The difference is: (yuan.

That is, this model uses No. 92 gasoline and uses No. 95 gasoline for 100 kilometers.

3. The power is different.

No. 95 gasoline with higher octane number is suitable for engines with higher compression ratio, because this type of engine will be more and more advanced with the increase of operating speed, and as a result, when the speed reaches a critical point, it will occur that the oil and gas in the cylinder will be burned in advance before ignition, which is called "detonation, and increasing the octane number of gasoline can effectively improve the knock resistance.

The difference between No. 92 gasoline and No. 95 gasoline is mainly in the applicable compression ratio, octane number, oil price, etc., and the specific differences are:

1. The applicable compression ratio is different. Generally speaking, cars with compression ratios between should generally run on 92 gasoline; Cars with a compression ratio greater than 95 should use No. 95 gasoline.

2. The octane number is different. The octane number of 93 gasoline is lower than that of 95 gasoline. That is, No. 92 gasoline contains 92% isooctane, while No. 95 gasoline has an octane number of 95%.

3. Oil prices are different. The unit price of 92 gasoline is cheaper than that of 95 gasoline.

The biggest difference between these two types of gasoline is that n-heptane and isooctane are not the same.

Among them, No. 92 gasoline is rich in 92% isooctane and 8% n-heptane; Whereas 95 gasoline is rich in 95% isooctane and 5% n-heptane.

In addition, the gasoline mark also represents the anti-knock resistance of the fuel, and the larger the mark, the better the anti-knock performance. It is worth mentioning that the gasoline label has nothing to do with the quality of the gasoline itself, and it does not mean that the higher the gasoline, the better, or that the higher the gasoline does not mean that there are fewer impurities or the purer the purity.

1. Composition difference. Gasoline 92 is made up of 92% isooctane and 8% n-heptane, while gasoline 95 is made up of 95% isooctane and 5% n-heptane. The higher the purity of isooctane, the stronger the anti-knock performance of gasoline, and the higher the relative price.

2. Stability difference. No. 95 gasoline is particularly stable, and No. 95 gasoline is easier to burn, No. 92 gasoline has an octane number of 92 percent, and the octane number of No. 95 gasoline is 95%, and No. 95 gasoline is particularly easy to burn, so it is right to say that it is more resistant to burning. The two oils cannot be mixed and matched, and the gasoline mixture will cause the engine to be bad, and it will also have a great impact on the life of the engine.

3. Differences in applicable models. When choosing No. 92 and No. 95 gasoline, please add it according to the instructions for using the car, generally about 100,000 cars, adding No. 92 gasoline is enough, and 300,000 cars plus No. 95 gasoline can meet the needs of the engine.

The biggest difference between No. 92 gasoline and No. 95 gasoline is that the share of n-heptane and isooctane is not the same. No. 92 gasoline is rich in 92% isooctane, 8% n-heptane; Whereas 95 gasoline is rich in 95% isooctane and 5% n-heptane.

The gasoline mark represents the anti-knock resistance, and the larger the mark, the better the anti-riot ability, which has nothing to do with the quality of the gasoline itself, not that the higher the mark, the less impurities there will be.

So what is knock resistance?

Knock resistance refers to the ability of gasoline to resist knocking when incinerated in the engine, and it is the primary goal of gasoline incineration function. Knocking is caused by the abnormal incineration of gasoline in the engine. The octane number is the target of the fuel detonation resistance, and the higher the octane number, the stronger the detonation resistance.

Engines with high tightening ratios have high pressure in the incineration chamber, and are prone to knocking if fuel with low knock resistance is used. Then it can be seen that the octane number of No. 95 gasoline accounts for a high proportion of gasoline, and the fuel has good anti-knock performance.

1。In the car that should have increased 95 gasoline, 92 gasoline was added, and it would not be a big problem when mixed in a short period of time, but it would be detonation for a long time, especially when it was idling, and it would also lead to an increase in engine carbon deposition and fuel consumption if it was mixed for a long time.

2。In the car that should have increased 92 gasoline to add 95 gasoline, some car owners like to enrich the car, with high grade oil to add low grade specification of the car, because 92 gasoline riot resistance is low, so 92 gasoline engine with 95 gasoline is not much doubt. But although there is no big doubt, is it okay to spend money like this?

China's automotive gasoline label is divided by the octane number of the research method, and there are propositions on the selection of oil products and the clarification of the use of the label in the user manual of the car, and the reasonable selection of gasoline label is not only conducive to maintaining the engine, reducing fuel consumption, but also conducive to improving the power of the engine.

Old drivers who run long distances on holidays should have a deep understanding that it is difficult to refuel in a long-distance car. It is not uncommon for car owners to mix 92 and 95 gasoline, what will be the impact of this? The fundamental difference between the two is that the octane number is different, in layman's terms, the anti-knocking agent added is different, and the proportion of anti-knocking agent added to No. 95 gasoline is slightly more than that of No. 92.

The quality of the two gasolines is exactly the same, and the cleanliness has nothing to do with it, the only difference is that the amount of antiknock agent added is different, which is designed to adapt to the different requirements of different compression ratio engines for anti-knock value.

So should you add 92 gasoline, and 95 is better for the car? That's not true. The engine system determines what type of gasoline to use, and 92 gasoline should be used, even if you add 95 gasoline, it will not add any power to the car.

It's okay to mix 95 gasoline in a 92 tank, but if your engine compression ratio is below 10, it's wasteful. If it is above 12, it is recommended that you use 95 gasoline, which may be more economical. The use of low-grade gasoline in a high-compression ratio engine may cause engine knocking, which is detrimental to the engine.

What is the general compression ratio? The engine between 10 should choose 92?No. 95 gasoline; Engines with compression ratios above 10 should choose 95?

No. 98 gasoline. Of course, in the car's fuel tank cap, the gasoline number recommended to the owner to fill has already been written. It is precisely this that many car owners have doubts.

Strictly speaking, you can't mix them. The addition of high-grade models and low-grade gasoline will seriously affect the normal operation of the engine, which will lead to knocking, and in severe cases, it will reduce the service life of the engine and increase the maintenance cost. If a low-grade model is added with high-grade gasoline, it will cause gasoline to burn back, making gasoline fuel insufficient, resulting in waste.

So for the safety of the vehicle, but it is better to use it separately.

Reminder: What type of gasoline to add to your car, there are suggestions on the selection of oil in the car's user manual and instructions on the use label, and it is the best choice to refuel your car according to the recommended gasoline model in the user manual. If you mix different grades of gasoline to refuel your car for a long time, it will affect the service life of the ignition system, fuel injector and spark nozzle of the car, and it will also make your car overhaul time earlier.