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Overview
The cooling system of the car is designed to maintain proper engine temperature by removing excess heat from hot engine components and heat dissipation into the atmosphere. The cooling system consists of a sealed-type pump, a radiator, an expansion tank, an electric fan, radiator, thermostat and its connecting hose. The system works as follows: as long as the engine is cold - the thermostat is closed and coolant is circulated in a small circle, bypassing the radiator. This provides a quick and economical engine warm up to operating temperature. When the coolant temperature reaches about 85 ?� C, the thermostat is slightly opened and the liquid begins to circulate in a large circle through the radiator. When the temperature reached 105 ?� C, the thermostat opens fully. The heated coolant passes through the radiator heater, warming the room, and returned to the pump. Passing through the radiator is cooled by a counter flow of liquid air. Electric radiator cooling fan mounted behind the radiator is controlled by thermal sensor located at the bottom left of the radiator. In addition to the usual sensor coolant temperature gauge, set temperature switches and sensors to operate the fuel injection system and the ignition system.
| Fig. 4.1. Engine cooling system SOHC: 1 - a radiator; 2 - the thermostat; 3 - connecting pipe; 4 - a broad tank; 5 - the top cover; 6 - the air intake; 7 - Mount the fan (EZ); 8 - Mount the fan (RV, RP); 9 - Mount the fan; 10 - additional fan; 11 - the drive belt; 12 - electric fan
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| Fig. 4.2. Engine cooling system DOHC: 1 - a radiator; 2 - pump; 3 - thermostat ;, 4 - a broad tank; 5 - water heat exchanger; 6 - the back cover; 7 - an arm of the fan; 8 - an arm of the fans; 9 - electric fan; 10 - additional fan; 11 - the drive belt; 12 - the top cover; 13 - air intake
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| Fig. 4.3. The cooling system of the diesel engine 1 - a radiator; 2 - the coolant pump; 3 - the thermostat; 4 - the oil cooler; 5 - the electric pump; 6 - a broad tank; 7 - a hose of turbocharger; 8 - a cover; 9 - an arm; 10 - an electric radiator fan; 11 - an extra radiator fan; 12 - a belt; 13 - a casing
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As can be seen from the figures 4.1, 4.2 and 4.3 design of the cooling system depends on the kind of the vehicle engine.
WARNINGS 1. Open the cover of a broad tank on the hot engine, care must be taken because the outgoing hot vapors can cause severe burns 2. Do not spill coolant on clothes and body paint. Otherwise, rinse with plenty of water 3. It should not be after a long trip or when the engine is running at maximum mode immediately shut off the engine as the coolant pump will stop at the time. as an overheated engine parts continue to give off heat, which can lead to boiling of the coolant. |
Technical data and features
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