Cooling system
1 – radiator; 2 – thermostat; 3 – thermostat housing; 4 – pipeline connection body; 5 – separating element; 6 – coolant pump; 7 – cooling system pipelines; 8 – intake manifold heating pipes; 9; 10 – heating pipelines; 11 – Coolant filler plug; 12 – temperature sensor
The cooling system is a closed-loop, pressurized system that includes a water pump driven by a toothed belt, an aluminum radiator with a composite expansion tank, an electric cooling fan, a thermostat, a heating system, hoses and switches.
The system works as follows: Cold coolant from the base of the radiator passes through a hose to the pump and is pumped through the main channels of the cylinder block and oil coolers (if any). After cooling the engine cylinders, combustion chambers and valve seats, the coolant reaches the back of the thermostat, which is initially closed. The coolant also passes through the heating system and returns through the cylinder block to the pump.
When the engine is cold, the coolant circulates only through the engine block, cylinder head, and heating system. When the coolant reaches a predetermined temperature, the thermostat opens and coolant flows through the upper hose to the radiator. As the coolant circulates through the radiator, it is cooled by the air flow when the car is moving or by the radiator fan when the car is parked with the engine running. Once it reaches the base of the radiator, the coolant is cooled and the cycle repeats.
The electric cooling fan is controlled by a thermal switch. At a certain coolant temperature, the thermal sensor switches on the fan.
Caution! When opening the expansion tank cap on a hot engine, be careful as hot fumes may escape and cause severe burns.
Caution! Avoid contact of coolant with clothing and body paintwork, otherwise rinse the surface with plenty of water.