Gasoline is Types of gasoline, their features

2024 Author: Howard Calhoun | [email protected]. Last modified: 2023-12-17 10:16

A car is a complex system of mechanisms that require proper care and compliance with operating recommendations. They are installed by the manufacturer and specified in detail in the form of a list in the instructions.

Gasoline is, as you know, fuel. The durability of the car depends on its quality and basic characteristics. If the fuel is selected in accordance with the requirements of the motor, the engine will require repair or replacement for a long time. Therefore, using high-quality gasoline with the required set of characteristics, the driver can significantly reduce the cost of maintaining his car.

Today there are many varieties of fuel for the engine. What is their difference, the advice of experienced motorists and technologists will help to understand. Making the right choice in this case will be easy.

General characteristics

Gasoline is a mixture obtained from the distillation of oil. It is designed for internal combustion engines. Ignition in the system is forced. Gasoline "Ford", "Opel", "Lada", etc. may differ in a number of characteristics. This is due to the difference in fuel composition.

Gasoline boils away when heated from 28 to 215 ºС. Allocate automotive and aviation varieties. In recent years, the requirements for the environmental cleanliness of gasoline have increased significantly. Therefore, the amount of sulfur compounds, as well as aromatic hydrocarbons, was reduced in its composition.

The main characteristics that determine the scope of fuel for cars are fractional composition, detonation and chemical stability, vapor pressure, etc. Before buying a particular variety, you should familiarize yourself with the main properties of the fuel.

Knock resistance and octane rating

The flame in the engine normally spreads at a speed of 20-30 m/s. In some cases, it can increase significantly (up to 1500-2500 m/s). At this point, detonation occurs. It affects the performance of the engine. A wave is formed, which creates gasoline. Opel, Peugeot, Mercedes or any other brand of car in this situation begins to overuse fuel.

Knock reduces engine power. At the same time, its exhaust valves and pistons burn out. The octane number is used to indicate the resistance of a fuel to detonation. To determine it during the development and creation of gasoline, the manufacturer conducts tests under loaded and light conditions.

Methods for determining octane number

Gasoline is a fuel that mixes with air in a certain proportion during engine operation. The octane number can be determined by twomain ways. This is an exploratory and motor method. In the first case, the tests are carried out at low loads, and in the second - at high speeds and heating temperatures.

According to the test method, the types of gasoline are divided into 2 main groups. The first of them may have the letter "I" in the marking. This means that the octane number was determined using a research approach. If the marking includes the letter "A", this means that the detonation limit was measured by motor. The octane number can be set in both of these ways at the same time. The marking in this case has the letters "AI".

Classification by octane number

When deciding at a gas station with the question "what kind of gasoline is best to fill in the engine", you should consider the generally accepted classification by octane number. It is based on the research method.

According to her, there are 4 types of gasoline. There are "Normal-80", "Regular-92", as well as "Super-98" and "Premium-95". Along with the AI-80, the first version is designed for truck engines.

Instead of leaded gasoline A-93 in passenger cars today it is customary to use "Regular-92". For foreign cars, the motor of which is manufactured in accordance with all European standards and requirements, it is customary to use "Super-98" or "Premium-95". This fuel is able to extend the life of foreign car engine mechanisms, and also fully complies with high environmental requirements.

Gasoline quality

Owners of foreign cars, such as Mercedes, Ford, Peugeot, for which gasoline must meet high European standards, are puzzled by issues of improving the quality of domestic fuel.

In our country there is also a practice of improving the quality of fuel and octane number with the help of special additives. These are anti-knock components. To prevent the formation of carbon deposits in the engine, they are used in combination with a scavenger.

Anti-knock contains lead. Evaporating from the engine with exhaust gases, these substances enter the environment, poisoning it. Therefore, the use of such technologies is a rather dubious method. It is better to initially purchase high-quality gasoline that meets environmental requirements.

Wrong fuel selection

Trying to choose the best gas for your car, many drivers still make mistakes. Each manufacturer calibrates the motor for a specific type of mixture. If the entire system, microprocessors and sensors are designed for Premium-95, the engine will not be able to fully operate at Normal-80.

In this case, the knock sensor under loads, sharp accelerations will constantly work. This causes unstable operation of the motor, reducing its dynamics. If the knock sensor is not working properly, the power unit may overheat. The valve and pistons are destroyed much faster. Fuel consumption starts to increase. Repair of the engine and other systems will cost more than permanentlyfill the car with the required grade of gasoline.

How to evaluate the quality of gasoline?

Unscrupulous sellers can independently change the chemical composition of the fuel to get more profit. In order not to become a victim of fraud, you should purchase fuel from trusted distributors.

Gasoline is, as you know, a consumable item on which the operation of a car depends. You can't skimp on its quality. You can check it yourself. To do this, gasoline is poured into a transparent container. The substance should be a pale yellow color without impurities.

If potassium permanganate is added to the container, the fuel should not turn pink. Otherwise, a change in color indicates dilution with water. At some branded gas stations, gasoline is colored with different means to avoid fakes.

If you put a drop of fuel on your palm and rub it, there should not be a greasy trace. Otherwise, it indicates the admixture of diesel fuel. Also, any smell uncharacteristic of petroleum products should alert.

Chemical qualities of good gasoline

In search of an answer to the question of how much gasoline should be poured into the tank, you need to carefully study the instruction manual. The manufacturer clearly specifies these parameters in this document.

During combustion, the maximum amount of heat should be released. Moreover, the thermodynamic characteristics should also be high. High-quality gasoline is easily pumped through pipelines and engine mechanisms. This indicator should not decrease in conditions of lowtemperature, dustiness. The optimal evaporation rate allows you to store gasoline for a long time and ensure its rapid ignition when the engine is running.

Also a good product protects system components from corrosion. Modern high-quality fuel, in addition, must be environmentally friendly. Decay elements must not poison the environment.

Expert Opinion

To purchase quality gasoline, experts advise following a number of recommendations. This will avoid fraud on the part of sellers, keep the engine running for a long time. First of all, you need to pay attention to the reputation of the implementer. Gas stations that value their name will never sell low-grade gasoline.

In such points of sale of fuel, there is always a buyer's corner, as well as relevant documentation on the right to sell gasoline. Even old, but high-quality gas stations have been renovated, there are appropriate markings, warning signs and signs.

The unreasonably low cost of gasoline should alert us. The quality of this product, as mentioned above, is not worth saving.

Given the recommendations of experts and technologists, we can conclude that gasoline is a fuel for an internal combustion engine, the durability of the engine depends on the correct choice of which.