The engine cooling system is one of the most important parts of a car. It not only cools the engine, but also heats the car interior in winter. And to carry out maintenance and repair, you just need to know the composition of the system and the general principle of its operation.
The first copies of VAZ 2110 cars were practically a copy of nines. The only difference is in the body, and the engine and gearbox are similar. But carburetors were replaced by an injection system, a lot has changed in the car, including the cooling system. Constant modernization makes itself felt, the car becomes more reliable, but more difficult to maintain. Of course, an increase in engine power entails a lot of rework. Changes are taking place in the braking system, lubrication and cooling system. But the principle of operation remains practically unchanged.
The composition of the cooling system VAZ 2110
It is very difficult to single out some element, the most important, since all units play the main role in the cooling system. Let's start with the first thing that catches your eye. This is an expansion tank with a plug in which there are two valves (inlet and outlet). During engine operation, the coolant heats up, it expands. A reservoir is required to release excess fluid from the system.
The radiator, fan and temperature sensor are parts located at the front of the vehicle. A radiator is required to effectively cool the fluid in the system. The fan is triggered by the sensor, blowing a strong air flow to the radiator. Due to the blowing there is a significant extraction of heat from the radiator. A sensor is a simple switch whose contacts close at a certain temperature.
A pump installed in the engine block, driven by a timing belt, is necessary to circulate the coolant in the system. And the thermostat simply switches the cooling circles. There is also a radiator in the heating system, it is installed in the stove (snail). One branch pipe from the block (hot liquid) goes to it through a faucet installed on the body. And one pipe comes out from the stove and goes to the thermostat.
Nozzles and clamps are already secondary parts, but they affect the operation of the entire system, since it is through them that the coolant moves. The slightest crack in the pipe can cause a rapid decrease in the level of the coolant, an increase in its temperature. There are one or two temperature sensors in the engine block, they are necessary for the operation of the temperature gauge and the computer.
How the cooling system works
When a cold engine is started, the coolant moves in a small circle. If it is simpler, then all units work, except for the radiator. The main task after starting the engine is to quickly reach the operating temperature, which is about 90 degrees. When the system is operating with the main radiator, it is quite difficult to do this, the warm-up will take a longer period of time. Plus, in the small circle, the throttle valve is heated.
When the thermostat is opened, it switches to a large circle, in which the radiator participates. By including it in operation, cooling is much more efficient. At high speed, when the airflow is very good, the temperature is kept at the same level. And when driving along a traffic jam, when there is no such flow, the temperature of the coolant rises. A sensor installed in the radiator is responsible for the fan actuation. When a certain temperature is reached, the contacts close, the fan turns on, creating a powerful air flow.
