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Cooling

Radiator

The radiator serves to cool the coolant, which is heated while passing through the cooling jacket of the engine. The radiator is placed in front of the vehicle and comprises an upper and lower tanks and the core connecting the two tank. The upper reservoir has a supply inlet for coolant coming from the cooling jacket and the filler neck. By this they brought a tank and a hose through which the coolant out the excess or steam. Lower tank has inlet and outlet valve which serves to drain the coolant core is composed of a large number of tubes through which coolant passes from the upper to the lower tank, and the cooling plates, which discharge heat from the fluid flowing in the tubes. The air intake fan, radiator, and air flow that occurs when the vehicle passes through the radiator and cool it. The lower tank mounted oil cooler to cool the transmission fluid automatic transmission.

Radiator cap

The radiator cap seals the radiator, making it necessary pressure upon expansion of the coolant. This pressure prevents boiling of the coolant even at temperatures above 100 ?� C. The radiator cap integrated safety (pressure relief) valve and the vacuum valve (vacuum valve). Safety valve designed to release steam through the overflow pipe when the pressure developed within the cooling system exceeds a limiting value (coolant temperature - 110-120 ?� C; pressure - 58,8-103,0 kPa). The vacuum valve opens and reduces the pressure in the cooling system after the vehicle stops, thereby reducing the temperature of the coolant, and it is returned into the surge tank.

Expansion tank

When the thermal expansion of the coolant flows from the radiator to the expansion tank. When the coolant temperature decreases, it returns to the tank of the radiator. Thus, there is filling the radiator and preventing loss of coolant. If it becomes necessary to add coolant to the radiator, check the fluid level in the expansion tank.

Water pump

This pump is used for forced circulation of coolant in the cooling system. The pump is mounted on the front of the cylinder block and is driven by a belt.

Thermostat

The car used a wax-filled thermostat mounted on the outlet pipes of the radiator. The thermostat has an automatic valve responsive to coolant temperature changes. This valve is closed with a decrease in temperature of the liquid, ensuring that it circulates only through the cooling jacket of the engine, which ensures its rapid heating. When the temperature of the fluid increases, the valve opens and resumed circulation of fluid through the radiator. Located inside the thermostat wax expands when heated and contracts when cooled. Thus, expansion of the wax when heated creates pressure that exceeds the spring force holding the valve in the closed position, whereby the valve opens. Compression wax on cooling reduces the force that makes the spring to close the valve again. Opening start temperature 86.5 ?� C thermostat.