What does the car cooling system do?


When you drive your car, the car engine produces a lot of heat. This heat can cause all sorts of damage to parts under the hood, so needs to be regulated and kept cool. Luckily, cars have been designed with specific parts that work together to keep the parts under your hood cool.

This is known as the vehicles ‘cooling system’ which is basically just a bunch of parts that work together to designed to remove heat from the engine and keep it operating in a low temperature range.

The cooling system has 5 main components;

> Water Pump

> Radiator

> Thermostat

> Hoses

> Coolant


Water Pump

The water pump moves coolant from the radiator, through the engine, and back into the radiator. It is driven by either the fan belt or timing belt.



The radiator is a series of thin channels where coolant passes through, and transfers the heat to the channels (which then eventually, the heat comes out into the air).



The thermostat controls the flow of coolant through the engine. When the engine is cold, no fluid passes through. It only passes through once the engine warms up.



The hoses carry the coolant from the radiator to the water pump and from the engine to the radiator. The hoses are made from rubber and can deteriorate over time.



Coolant absorbs heat from the engine. Coolant increases the boiling point of water, and keeps rust and scale from forming in your cooling system. Coolant also prevents freezing and also provides lubrication for the water pump.