How Car Engines Work(text).doc

How Car Engines Work
Here we'll discuss the basic idea behind an engine, and then go into detail about how all the pieces fit together and how to increase performance!
bustion
Almost all cars currently use what is called a four-bustion cycle to convert gasoline into motion. The four-stroke approach is also known as the Otto cycle, in honor of Nikolaus Otto, who invented it in 1867. They are:
Intake stroke or suck stroke
Compression stroke or squeeze stroke
Combustion stroke or bang stroke
Exhaust stroke or blow stroke
The piston is connected to the crank shaft by a connecting rod. Here's what happens as the engine goes through its cycle:
The piston starts at the top, the intake valve opens, and the piston moves down to let the engine take in a cylinder-full of air and gasoline. This is the intake stroke. Only the tiniest drop of gasoline needs to be mixed into the air for this to work.
Then the piston moves back up press this fuel/air mixture. Compression makes the explosion more powerful.
When the piston reaches the top of its stroke, the spark plug emits a spark to ignite the gasoline. The gasoline charge in the cylinder explodes, driving the piston down.
Once the piston hits the bottom of its stroke, the exhaust valve opens and the exhaust leaves the cylinder to go out the tail pipe.
Now the engine is ready for the next cycle, so it intakes another charg