How does automotive antifreeze work?

The full name should be called automotive antifreeze coolant, which means coolant with antifreeze function, so that the car can continue to be used at low temperatures in winter. to prevent the cooling system from freezing in cold weather. The engine and its cooling system are made of metals, including copper, iron, aluminum, steel, and solder.

These metals corrode and rust when they come into contact with water at high temperatures.

Antifreeze not only does not corrode the engine cooling system, but also has the function of anti-corrosion and rust removal. Water has a boiling point of 100, and the boiling point of a good quality antifreeze is usually 110 above zero, and antifreeze is more difficult to boil than water. The biggest headache for drivers who use water as a coolant is limescale.

It makes the heat dissipation effect worse and worse, and it is also difficult to remove. High-quality antifreeze is made from distilled water with anti-scaling additives. Not only does it not produce limescale, but it also has a descaling function.

More than 95% of ethylene glycol water-based antifreeze is used at home and abroad. Compared with tap water, secondly, ethylene glycol has a high boiling point, low volatility, moderate viscosity, little change with temperature, and good thermal stability. Ordinary antifreeze can reach -40, and high-quality antifreeze should reach about -60, which is an important indicator for calibrating the quality of antifreeze, and the boiling point of antifreeze.

The boiling point of water is 100, and the antifreeze should reach at least 108, that is, the lower the freezing point, the higher the boiling point, and the greater the temperature difference, the better the quality of the antifreeze.

High-quality antifreeze can be changed every year, while vehicles with short operating hours can be changed every two years or every 30,000 km. In order to prevent excessive foam and reduce heat exchange between antifreeze and engine parts, confirm that the product is a long-lasting antifreeze for up to three years during the expiration date of the added product. If suspended solids, sediment, or deterioration or discoloration are found in the antifreeze, the system should be replaced and cleaned promptly.

Antifreeze produced through fine-tuning and factory-production can only be placed on the market after the freezing point of the antifreeze has been measured. Some antifreeze can corrode and puncture the tank and flow into the engine, leading to major accidents. Users are advised to choose a regular brand of antifreeze.

When the coolant is mixed with water, a chemical reaction occurs, which produces special substances that weaken the lubrication and cause the piston to stick, thus preventing the coolant from freezing.

First of all, it can replace tap water, and the boiling point is relatively high, and at the same time, it can also make the engine in a short time, and then it can also prevent some traffic accidents, and it can also keep the engine at a suitable working temperature for a long time.

Antifreeze is to add some substances with a low freezing point to pure water, so that it will not freeze in winter.

In fact, it plays a role in weakening lubrication, and secondly, it is also to prevent living together for three years, and the refrigerant will also prevent the car from being injured in winter because the weather is too cold.

Hello, there are 2 functions of car antifreeze, one is antifreeze, and the other is anti-overheating. Hope it can help you

Hello, car landlords also need to do work, on the house we have a cooling system that freezes in the winter, so add antifreeze to the two lines of outpatient volume, I hope my answer can help you.

Car antifreeze, also known as:"Antifreeze"or"No freeze", the full name should be called car antifreeze coolant, which means coolant with antifreeze function, in order to make the car continue to be used in low temperatures in winter. The engine coolant will be added with some substances that can reduce the freezing point of water as antifreeze, so that the cooling system does not freeze in cold weather.

In addition to antifreeze, antifreeze has several advantages:

The first one is the anti-corrosion function. The engine and its cooling system are made of metal, including copper, iron, aluminum, steel and solder. These metals come into contact with water at high temperatures, and over time, they will be corroded and rusted.

Antifreeze not only does not corrode the engine cooling system, but also has anti-corrosion and rust removal functions.

The second is that the boiling point of antifreeze is high. The boiling point of water is 100, and the boiling point of high-quality antifreeze coolant is usually 110 above zero, so that in the summer, antifreeze coolant is more difficult to boil than water.

The third is that antifreeze can prevent scale, using water as coolant is the most headache for drivers is the problem of scale, scale adheres to the metal surface of the water tank and water jacket, making the heat dissipation effect worse and worse, and it is also difficult to remove. The high-quality antifreeze is made of distilled water and added with anti-scale additives, which not only does not produce limescale but also has the function of descaling. Of course, if your tank is very thick with limescale, it is best to thoroughly wash it with tank cleaner before adding antifreeze.

There are many parts on the car, antifreeze is a kind of antifreeze in the auto parts, as an indispensable thing in the car, in the process of driving, and even in the weather and climate change is a very big role, especially in the insulation protection of auto parts, it plays a very key role.

1. Automobile antifreeze.

The full name of antifreeze on the car is actually antifreeze coolant. Literally, as the name suggests, it is the function of antifreeze, and antifreeze can ensure that the body of the car is frozen or stiff when it is parked in the cold or winter. Therefore, it has certain thermal insulation measures, antifreeze is a special coolant, which only plays a very big role in summer or winter, and antifreeze as a car has better performance, has the ability to resist water, scale and corrosion, of course, there are many types of antifreeze, according to the antifreeze required by each body to carry out the corresponding thermal insulation measures.

The function is to prevent the radiator from swelling and cracking due to ice when parking in winter, and freezing the engine air cover or cover. And the antifreeze also has an anti-corrosion function to protect the cooling system.

It is to prevent the engine from freezing in cold weather and cannot be used, and after having antifreeze, there is no need to worry about this problem.

It can also prevent some parts of the car from freezing, and it can also prevent corrosion, and it can also prevent boiling in summer.

1. Cooling effect.

Cooling is the basic function of coolant. The engine generates a lot of heat when it works, 60% of which is dissipated into the surrounding space through the cooling system. Water and methanol coolants have a low boiling point and are prone to boiling, which can cause engine damage or even paralysis even for a short period of time if the vehicle works under coolant boiling conditions.

2. Anti-corrosion.

The radiator, water pump, cylinder block and cylinder head, water distribution pipe and other components in the cooling system are composed of steel, cast iron, brass, copper, aluminum, tin and other metals, due to the different electrode potentials of different metals, electrochemical corrosion is easy to occur under the action of electrolyte, and the acidic products formed after the decomposition of diols in the coolant and the acidic exhaust gas formed after fuel combustion may also penetrate into the cooling system and promote the corrosion of the cooling system.

Corrosion of the cooling system will cause the downwater chamber of the radiator tank, the fuel injector spacer, the cooling pipe, the joint and the water tank pipe to fail, and at the same time the corrosion products will block the pipeline, causing the engine to overheat or even paralyzed, if the corrosion is perforated, the coolant will penetrate into the combustion chamber or crankcase will cause serious damage, because when the coolant or water is mixed with the lubricating oil, the oil and gum will be generated, and the lubrication will be weakened, so that the valve, the hydraulic valve push rod and the piston ring will be bonded. Therefore, a certain amount of anti-corrosion additives are added to the coolant to prevent corrosion in the cooling system.

3. Anti-scaling effect.

The scale in the cooling system is more than calcium ions, magnesium ions and other cations in the water, and these alkaline earth metal cations are easy to react with the anions in the water to form scale under heat load conditions. Scale can wear the pump seal and cover the outer wall of the cylinder block, reducing its thermal conductivity and causing the temperature of the cylinder head to increase sharply in the high temperature area, causing cylinder cracking.

Therefore, in order to reduce the formation of scale, the coolant requires the use of softened deionized water during both production and filling.

4. Anti-freeze effect.

In order to keep the car in low temperature in winter, the engine coolant is added with some substances that can reduce the freezing point of water as antifreeze to keep the cooling system from freezing in low temperatures. For this reason, coolant is sometimes referred to as "antifreeze" or "antifreeze".

1. Lower the freezing point.

2. Increase the boiling point.

3. Anti-corrosion.

4. Antioxidant.

The role of car antifreeze is: to prevent the coolant from freezing and rupturing the radiator and damaging the engine block or engine cover when parking in the cold winter. Its main indicator is the freezing point of the antifreeze.

When selecting or preparing antifreeze, the freezing point should be about 10 times lower than the minimum temperature in the area to ensure that the antifreeze will not freeze under special circumstances. Another important role of antifreeze is its boiling point, which means that when the cooling system of the car engine is in equilibrium with the outside atmospheric pressure, the coolant begins to heat up until it boils, and the temperature is controlled to keep the engine working at room temperature. Antifreeze also has antiseptic properties.

Metals in the natural environment can cause corrosion. At present, there are six types of anti-corrosion metals, namely steel, cast iron, etc. The cooling system of modern car engines is mostly made of cast aluminum and aluminum alloy parts, so it is necessary to prevent icing.

At the same time, the dissolution, expansion and aging of non-metallic materials such as rubber and plastics in the cooling system should also be taken into account. Corrosion inhibitors can stop or slow down chemical reactions, electrochemical processes, and physical remote disruption of materials. Waterproofing is another part of antifreeze.

The main effect of fouling is the attachment of insoluble salts or oxide crystals to the surface of the radiator. Normal heat dissipation of the heat exchanger is more likely to cause blockage of the circulation pipe of the cooling system. High water temperature seriously affects the positive pressure of the engine.

In the cooling system, calcium sulfate, calcium carbonate and magnesium carbonate are the main substances that produce scale in the cooling system, and calcium and magnesium ions mainly come from the water in the coolant. Therefore, the water quality of the cooling antifreeze must be strictly controlled.

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