Why don’t we drive steam cars today? What happened?
In a steam engine, a burner heats water in a boiler to create steam which pushes a piston in a cylinder. The burner and boiler are outside of the cylinder, so we say a steam engine is an external combustion engine.
What if you could put the heat and fuel inside the cylinder? That would be an internal combustion engine. Instead of just one, the internal combustion engine has several cylinders with moving pistons. Each cylinder gets a squirt of air and gasoline injected into it. As each cylinder connects with a spark plug, a spark ignites the gas and makes a little explosion. The explosion pushes the piston. The piston pushes a drive shaft. The drive shaft turns a car’s wheels.
Whew! Complicated, huh? But it works great.
This is cool. A rotary engine—https://twitter.com/intent/like?ref_src=twsrc%5Etfw%7Ctwcamp%5Etweetembed%7Ctwterm%5E1084506431850713095%7Ctwgr%5E&ref_url=https%3A%2F%2Fwww.motorbiscuit.com%2Fthe-interesting-history-of-the-internal-combustion-engine%2F&tweet_id=1084506431850713095
Back to the beginning of The Western Civ User’s Guide to Time & Space