/ / Cooling system VAZ 2110: description, operating principle, repair

Cooling system VAZ 2110: description, operating principle, repair

The VAZ 2110 cooling system is designed formaintenance of effective work of the internal combustion engine. The system does not allow to exceed the operating temperature inside the unit, and also facilitates its quick dialing to the optimum level. This is achieved by switching between large and small cooling circles. It should be borne in mind that overheating is also dangerous for the engine, as well as an unheated system.

Cooling system

Cooling system on the car VAZ 2110is a liquid, closed type, the circulation of which is enforced in a compulsory manner. Coolant may be water or antifreeze. To date, almost no one uses water in the system. It quickly freezes and is a catalyst in oxidation processes, which negatively affects the performance of many parts and assemblies.

engine compartment

The use of antifreeze is reasonable and justifiable,since the liquid has a low freezing threshold, protects the system parts from rust formation. Frequent causes of breakages of the given system becomes pollution of the mains, along which the coolant circulates.

Система охлаждения ВАЗ 2110 8 клапанов имеет differences from the 16-valve motor by means of the size of the expansion tank and thermostat. The very same circuit and cooling device is not fundamentally different from other vehicles. The main components of the system are a cooling radiator, a centrifugal pump (often called a pump) and a thermostat. The last element in this car model is located under the air filter on the battery side.

cooling system pump

Device of the system

Cooling system VAZ 2110 consists of the following elements:

  • cooling radiator, has a left and right cooling tank;
  • electric fan with its own electric motor;
  • the sensor of activation of the fan;
  • a coolant temperature sensor, mounted in the head of the engine block;
  • thermostat;
  • expansion tank, equipped with a special plug with a liquid level sensor;
  • radiator heater (stove), located in the car;
  • centrifugal pump (pump).
    cooling circuit diagram

Engines VAZ 2110 are carburetor andInjection. Therefore, the cooling system may differ slightly. Usually this is expressed in the connection diagram of the radiator radiator sockets, the placement of a thermostat of a certain design from a cast aluminum casing and the enlarged size of the expansion tank. There may be no coolant level sensor in the reservoir.

Features of the system

The principle of the VAZ 2110 cooling systemis identical to the classical cooling scheme. Since the cooling system is closed, the operation takes place under excess pressure with an operating temperature of 85-95 ℃. The system is completely hermetic, the lid with a double valve is twisted on the expansion tank. When the engine cools, the extended fluid leaves the tank and, with a certain pressure, opens the valve to the air inlet to the required volume. During engine heating, the coolant heats up, expands and enters the expansion vessel. The valve on the lid opens due to excess pressure and bleeds the excess. Thus, the process of adjusting the pressure in the VAZ 2110 cooling system takes place.

expansion tank

Temperature conditions

Thanks to the thermostat and electric fanthe optimum temperature of the cooling liquid in the engine is maintained. The fan is attached to the radiator and is equipped with a special casing. In one of the radiator tanks is mounted a sensor that activates the start of the motor at a certain coolant temperature. When the liquid exceeds the boiling point (101 ℃), the fan starts and cools all the fluid that passes through the radiator. At a temperature of 92-94 ℃, the sensor stops the fan.

In the cooling system VAZ 2110 temperatureantifreeze is determined by the sensor. It is located in the cylinder block, and its readings are displayed on the dashboard in the passenger compartment of the vehicle. In addition, if the internal combustion engine is equipped with an electronic injection, an additional sensor is built in the head of the unit. Its task is to transmit information on heating to the electronic control unit.

Thermostat

Also, the thermal mode of the engine depends on the thermostat. The main task of this device is the rapid warming up of the engine and the timely removal of heat from the heating elements.

thermostat VAZ 2110

When the engine is first started, the bypass valveThe thermostat closes the access of the coolant to the branch pipe that leads to the radiator, and the liquid begins to circulate through a small circle. In the VAZ 2110 cooling system, it consists of a heater radiator, an intake manifold and a liquid chamber of the starting device.

After heating the antifreeze to a temperatureapproximately 88-90 ℃ in the thermostat, the bypass valve opens the access to the main branch pipe, which connects the cooling external cooler to the circulation wheel. When the temperature reaches 95-100 ℃, the nozzle opens completely and becomes fully accessible to a large cooling circle. According to the regulations the stroke of the main valve should vary within not less than 8 mm.

How to flush the VAZ 2110 cooling system

Для продления срока службы системы охлаждения ее periodically need to be cleaned. This is achieved by the washing method. The frequency of the process directly depends on the operating conditions, the condition of the power unit, the components of the cooling system.

cooling system connections

For washing systems use either distilled water, or soda with vinegar, or specialized cleaning cleaning agents.

Using water, the system is cleaned as follows:

  • the coolant is drained;
  • Distilled water is poured (the total volume of the VAZ 2110 cooling system is 7.8 L);
  • the engine starts and runs for 10-15 minutes, without load, at idle;
  • engine is muffled, water is drained;
  • If necessary, the procedure is repeated until the discharge of clean water.

The method is simple in execution, but ineffective. Water is unable to remove strong deposits of contaminants and scale.

Cleaning the system with soda, lactic acidand vinegar is more effective, but presents certain difficulties. The mixture must be prepared in a certain proportion and poured into the system. The engine should stand with it for about 7-8 hours, while the motor needs to start several times for a short time. Then drain the solution and rinse the system with distilled water in the manner described above.

Washing of the system using specializedmeans is the most effective way, but also the most costly on the part of finance. There are many different washing liquids in the car market, and the principle of the process is reduced to a similar method using distilled water.

washing agent

Possible malfunctions

One of the system's malfunctions is an airlock.In the VAZ 2110 cooling system, the unpleasantness is uncritical and easy to remove. There are several ways to get rid of such a problem, including the process of flushing the system. This is the most effective method, since it allows you to replace the old antifreeze and completely eliminate the problem.

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