There are several types of gasoline, and what are the classifications of gasoline

The types of gasoline are divided into: No. 90, No. 93, No. 97 are three types of unleaded gasoline (the current gasoline has long bid farewell to the era of lead), in addition to No. 95, No. 100 and so on. Different labels refer to the octane number of this gasoline, such as:

No. 93 gasoline refers to the octane number of gasoline is 93, and the octane number indicates the anti-knock resistance of this grade gasoline, the higher the label of gasoline, that is, the higher the occult value content, the less likely it is to deflagrate, that is to say, the better the anti-knock performance of the engine during combustion. Gasoline should be selected according to the compression ratio of the engine, and high-grade gasoline should be used for vehicles with high compression ratio, so as to ensure the best power output and the lowest cost in the case of no deflagration of the engine.

The compression ratio refers to the ratio of the total volume of the engine cylinder (i.e. working volume + combustion chamber volume) to the combustion chamber volume (compression ratio = total volume of the cylinder combustion chamber volume). The compression ratio is a very important structural parameter of the engine, which represents the ratio of the volume of gas at the beginning of the piston compression at the bottom dead center to the volume of the gas at the end of the piston at the top dead center. In terms of power and economy, the compression ratio should be as large as possible.

The compression ratio is high, the dynamics are good, the thermal efficiency is high, and the vehicle acceleration and maximum speed will be improved accordingly. However, due to the constraints of cylinder material performance and gasoline combustion detonation, the compression ratio of gasoline engine should not be too large.

In general, the compression ratio should be 90 motor gasoline; The compression ratio should be used in 90 and 93 motor gasoline; The compression ratio should be used in 93 and 95 motor gasoline; The compression ratio should be 95 and 97 motor gasoline. Generally, the compression ratio can be found in the car manual, in addition to the manual, some vehicle manufacturers will also mark the recommended fuel label on the inside of the fuel tank cap. The owner should strictly follow the different compression ratios of the engine and choose the corresponding grade of vehicle gasoline to make the engine play the best performance.

If unleaded petrol is used in a lower number than the specified requirement, the engine will detonate. Generally, there is a knocking phenomenon during rapid acceleration and climbing, and if the engine has a long-term knocking due to the low gasoline grade, the engine will be damaged, and even the piston and cylinder block will be damaged.

However, the choice of gasoline is not the higher the grade, the better, the main basis for the choice of gasoline label is the compression ratio of the engine. Parameters such as compression ratio and ignition advance angle have been set in the engine computer, and the owner has no problem choosing gasoline in strict accordance with the requirements of the instructions. The blind use of high-grade gasoline will not give full play to its advantages of high anti-knock performance, and it will also cause a waste of money.

If you can't find the compression ratio of your vehicle, please try to use high-grade gasoline to avoid causing damage to your car.

2 types, diesel and ordinary gas oil.

1. According to the manufacturing process, gasoline components can be divided into straight-run gasoline, hot-cracked gasoline (coking gasoline), catalytic cracking gasoline, catalytic reforming gasoline, superimposed gasoline, hydrocracking gasoline, alkylated gasoline and synthetic gasoline, etc.

2. Gasoline products can be divided into three categories: aviation gasoline, vehicle gasoline, and solvent gasoline according to their uses. The first two are mainly used as fuel for gasoline engines, and are widely used in automobiles, motorcycles, speedboats, helicopters, agricultural and forestry aircraft, etc.

solvent gasoline is used in the production of synthetic rubber, paints, greases, spices, etc.; Gasoline components can also dissolve substances that cannot be dissolved by water, such as oil, and play a role in cleaning oil; The gasoline component is used as an organic solution and can also be used as an extractant.

The history of the development of gasoline:

In the mid-19th century, the importance of gasoline was not yet recognized, and kerosene for lighting lamps was used in large quantities. Petroleum refining at that time relied on a simple distillation process to separate the components of the oil with different boiling points. The kerosene component has a high boiling point, is safe to use when lit, and becomes the main product of **refining, while gasoline and other components are often burned as fuel.

In the mid-to-late 19th century, the internal combustion engine that used gasoline was created, and in 1886, the gasoline engine was successfully operated as the power of automobiles, and the importance of gasoline increased day by day. However, using the distillation method, only 20% of the gasoline can be extracted from **.

The car is the main means of transportation in people's lives now, the advantage of the car is the convenience of the car, the car can freely choose the time and distance of the trip, and the car models are also very many, the gasoline used by different cars is not the same, the normal travel of the car should use the corresponding gasoline, so what are the types of cars.

Gasoline is the key to car travel, gasoline is burned inside the car to convert into the kinetic energy of the car, the promotion and use of gasoline allows the car to better drive, the standard gasoline is isooctane and n-heptane group Xiangshi combination, isooctane has a high anti-knock resistance, and the anti-knock resistance of n-heptane is very poor, the choice of automobile gasoline is selected according to the compression ratio of the engine, a suitable gasoline choice can ensure the perfect use of automobile gasoline, So as not to damage the engine of the car.

Gasoline types include leaded, unleaded and ethanol and other gasoline, now the gasoline sold at gas stations mainly has and 98 gasoline, the choice of car gasoline is selected according to the engine compression ratio of the car, and the gasoline model applicable to different compression ratios is also different.