Hi,
I'm getting confused here with all this talk about cells, geared engines, electric engine, gas engines, so on...

Can anyone spell out to me all the types of engine and what they actually consist of, ie a definitive giude to all the engine types (not an essay, just a brief description of each and what they consist of/how they work would be nice)

I hope someone feels up for it, as I really am getting confussed with all these engines!!!

Cheers