Here I have found a small info-graphic that illustrates how an engine works in everyday terms.

This should help the less mechanically savvy in this forum to understand what goes on in that big lump under the beautiful bonnets in these or any car.





Sources:

How A Car Engine Works (animated infographic)

How A Car Engine Works infographic moves us in a good way - Autoblog


Mods feel free to move this to any forum you feel like.