Many car owners said, "On the road, you must add good oil, power is enough to save fuel, such as No. 95 gasoline is better than No. 92 gasoline." "Is that really the case? What is the difference between 92, 95 and 98 gasoline, the higher the gasoline label, the more resistant to burning? The answer, of course, is no. We just need to refuel according to the car's factory instructions, without deliberately adding high-grade gasoline. Can I save money with high-grade gasoline? Average fuel consumption is almost the same.
In daily life, the use of gasoline with two different labels of No. 92 and No. 95 does not have much impact on average fuel consumption. Many experimental platforms have proved through actual tests that the final fuel consumption data using No. 92 and No. 95 differs by only about 0.1 liters/100 km, and the unit price of No. 95 gasoline is more expensive than No. 92 gasoline. Therefore, from a comprehensive point of view, "high-grade gasoline fuel saving" is a false proposition.
In addition to fuel consumption, using the same value of No. 92 gasoline and No. 95 gasoline respectively, the distance will not be too different. Of course, under certain conditions, the use of No. 95 gasoline is more fuel-efficient than No. 92 gasoline, but the fuel-saving effect is very limited. No. 92, 95, 98 is only a gasoline label, representing the explosion resistance, the larger the label means that the better the anti-riot ability, and the quality of the gasoline itself has nothing to do with it, not that the higher the label, the less the gasoline impurities.
Is No. 95 gasoline more resistant to burning than No. 92 gasoline? Speaking of which, we must talk about car engines. Gasoline has the characteristics of small viscosity and rapid evaporation, so it can be injected into the cylinder through the injection system, and after compression reaches a certain temperature and pressure, it is ignited by a spark plug to expand the gas.
Therefore, engines with different compression ratios are different in the choice of fuel label. The engine with high compression ratio should try to choose high-grade gasoline, and the gasoline label of the low-compression ratio engine can be appropriately reduced. The standard determines the knock performance. Domestic gasoline labels are divided according to continental gasoline standards for vehicles, and No. 92, No. 95 and No. 98 gasoline are the same in terms of quality and cleanliness, and the biggest difference between them is the octane number.
The proportion of anti-knockant added to No. 98 gasoline is slightly more than that of No. 95 and No. 92 gasoline, but it is exactly the same in quality and has nothing to do with cleanliness. As for the different amount of anti-explosion agent, it is to adapt to the different requirements of different compression ratio engines for knock resistance values.
Compression ratio. Let's popularize the second concept: compression ratio. Compression ratio is a very important structural parameter of the engine, which represents the ratio of the gas volume at the beginning of the compression of the piston at the lower stop point to the gas volume of the piston at the end of compression at the upper stop point, and the height of the engine compression ratio determines the level of the fuel label used.
In short, what car adds what oil, and the label of the oil used in the vehicle is determined by the compression ratio of the car engine. It is important to note that high-grade gasoline is not necessarily better than low-grade gasoline. If the engine with low compression ratio is hard to use high-grade oil, it is likely that there will be a phenomenon of "stagnation", that is, it will not reach the spontaneous ignition point when it is pressed to the head, which will not only cause unnecessary waste because the gasoline is not completely burned, but also easily make the engine produce carbon deposits and damage the car.
Gasoline label has nothing to do with the purity of gasoline, the province is not fuel-efficient and related to the compression ratio of the car, and the right oil can be used to have better protection for the vehicle. What is the difference between No. 92, No. 95, no. 98 gasoline? From the outside, they don't have a big gap. Domestic gasoline numbers are divided according to continental motor gasoline standards, and No. 92 and No. 95 and No. 98 gasoline are the same in terms of oil quality and cleanliness, the biggest difference is their octane number.
The proportion of anti-knockant added to No. 98 gasoline is slightly more than that of No. 95 and No. 92 gasoline. The quality of several gasolines is exactly the same, and cleanliness has nothing to do with it, the only difference is that the amount of anti-explosion agent is different, which is designed to adapt to different compression ratio engines for different anti-knock value requirements.
Understanding the meaning of the gasoline label, let's explore a saying that is widely circulated in the current public opinion field: the high-grade gasoline is powerful enough, and it can also extend the life of the engine. Speaking of which, let's popularize the second concept: compression ratio. Compression ratio is a very important structural parameter of the engine, which represents the ratio of the gas volume at the beginning of the compression of the piston at the lower stop point to the gas volume at the end of the compression of the piston at the upper stop point, and the compression ratio of the engine determines the height of the fuel label. In short, what car adds what oil is determined by the compression ratio of the car engine.