The engine cooling system is liquid, sealed with forced circulation. It includes: cooling jackets (head and cylinder block); cross-flow aluminum radiator; coolant pump; thermostat; coolant pump drive; expansion tank; nine-bladed viscous fan; heat exchanger of the heating and ventilation system, coolant temperature sensor and the coolant itself.
Between themselves, the cylinder blocks are connected by a single collector - a collection of coolant.
When installing the air conditioner on some car models, an additional electric fan is used.
The pressure for checking the tightness of the cooling system is 1.5 kgf / cm2.
Radiator
The radiator is designed to remove heat from the coolant and is made in the form of a horizontally located set of aluminum tubes with the right and left tanks. The radiator from the side of the engine is covered with a casing in which the fan is mounted.
The coolant supply hoses are fixed to the radiator pipes with screw clamps (or bandages). Brackets for fastening the radiator to the body are rubber-metal.
On vehicles with automatic transmission (automatic transmission) The oil cooler is built into the radiator. The working pressure in the automatic transmission system is 8.0 kgf / cm2.
Thermostat
The thermostat is designed to turn on and off a large circle of engine coolant circulation, depending on its temperature state. The main valve opening temperature is 88±5°С. Full opening temperature of the main valve - 105°C. The full stroke of the main valve disc is 8.0 mm.
Expansion tank
The expansion tank is used to fill the system with coolant, the volume to keep the liquid expanding when the temperature rises and to connect the cooling system with the environment when the pressure in the cooling system rises or falls.
The opening pressure of the pressure reducing valve in the cap of the expansion tank is 1.8–2.1 kgf / cm2.
Vacuum opening of the vacuum valve in the cap of the expansion tank 0.1 kgf/cm2.
Coolant temperature sensor
The coolant temperature sensor is a three-pin, mounted on the hose fitting on the left side of the engine cylinder head.
Signals from the sensor are sent to the electronic control unit (ECU) engine to calculate the required fuel consumption for the required power mode.