Vehicle Cooling System: How Does It Work?

A lot of complex processes happen in a car while running. Several processes combine to allow the car to function properly. One such process happens to be the cooling of the car. The cooling system is one of the essential parts of the engine's functioning. Cooling allows the engine to maintain optimum temperature for every individual part to function properly. Let us try and understand how the cooling system works.

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Coolant

A coolant is a mixture of fluid like water and antifreeze. This mixture prevents the car engine from overheating. The coolant also performs the important function of lubrication. It lubricates moving parts to reduce friction, and the parts don't end up being damaged.

Radiator

The radiator is the central component of the engine cooling system. It monitors the temperature of the engine and regulates it to prevent overheating. Radiator not only absorbs the heat from the engine but also helps with the movement of the coolant through various parts of the engine.

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Fans

The fans are positioned between the radiator and the engine to help the engine cool down. A fan is very important, especially when the car is stationary or traveling at high speeds.

Hoses

The hoses are flexible rubber components present in the cooling system. They absorb the vibrations between the radiator and the engine.

Water pump

The water pump is designed as a centrifuge. Its main role is to draw the cooled fluid from the radiator and push it through the engine.

Thermostat

The thermostat's main function is to regulate hot fluid flow passing through the radiator. Without this, the engine might get overheated.

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Working on the cooling system

The water pump, which acts with the help of a pulley and belt, takes the hot fluid from the engine and pushes it towards the radiator. The thermostat regulates that flow. The cooler fluid is then pushed towards the engine with the water pump's help after the hot fluid's removal.

The radiator of the system is connected to rubber hoses. The radiator has top and bottom tanks connected through various tubes. These tubes are connected to metal-sheet fins through holes that increase the core's surface area, leading to rapid cooling (heat is lost at a faster rate).

The coolant remains under the boiling point, which could be risky. This is why the system's pressure is increased so that the coolant doesn't boil easily. The coolant level keeps on decreasing after continuous usage over long periods. Thus, regular top-up for the coolant is required to ensure optimal functioning of the car.