cooling

This lesson was a bit short, but sweet.
We learnt what we needed to in the short time given.

We were told that anti-freeze/coolant is there to prevent the water inside the engine from freezing up.
In colder countries water freezes inside the engine and when water freezes it expands cracking the block.


Coolant is used because it does not freeze (hence the other name anti-freeze) that is why it is used in engines cooling systems, aswell as the fact that coolant also helps prevent corrosion in the water jackets and cooling system of the engine.


 
The vehicles radiator system is mainly operated by pressure to help the engine tempurature stay at the best operating tempurature of 108 Degrees Celcius.
The fact that the coolant/water or whichever you have in the radiator is under pressure, it wont evaporate because the "would have been" steam has nowhere to go other than the inside of the radiator.