Description of the cooling system

The cooling system removes excess heat generated in the engine. A certain part of the heat removed from the engine is used to heat the car interior. Cooling system device. as well as adjusting the passage of the coolant through the heat exchangers and, above all, the radiator, allows you to quickly warm up the engine to normal operating temperature.

In the initial phase after starting a cold engine, the thermostat opens the circulation of the coolant through the car interior heater. After reaching a certain temperature of the coolant, the thermostat turns on the circulation through the engine radiator located in the front of the car. If the fluid temperature continues to rise, the radiator fan turns on. The fan is switched on by a thermal switch. located in the radiator. The air flow thus strengthened, passing through the radiator grille, intensifies heat dissipation and reduces the temperature of the coolant (pic. 2.87 and 2.88).





The water pump is fixed to the front of the engine. In the 1.1 engine, the water pump, together with the radiator fan, is driven by a V-belt. In 1.4i/1.6i engines, water pumps are driven by toothed belts, and in a diesel engine, by a generator drive V-belt.