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Stripped Engine Block with visible Combustion Chambers
Stripped Engine Block with visible Combustion Chambers
Combustion Chamber (aka Cylinder): The combustion chamber (or cylinder) is the area where compression and combustion take place. As the piston moves up and down, you can see that the size of the combustion chamber changes due to the compression. It has a maximum volume as well as a minimum volume. The difference between the maximum and minimum is called the displacement and is measured in liters or CCs (Cubic Centimeters, where 1,000 cubic centimeters equals a liter).
So if you have a 4-cylinder engine and each cylinder displaces half a liter, then the entire engine is a "2.0 liter engine." If each cylinder displaces half a liter and there are six cylinders arranged in a V configuration, you have a "3.0 liter V-6." Generally, the displacement tells you something about how much power an engine has.

A cylinder that displaces half a liter can hold twice as much fuel/air mixture as a cylinder that displaces a quarter of a liter, and therefore you would expect about twice as much power from the larger cylinder (if everything else is equal). So a 2.0 liter engine is roughly half as powerful as a 4.0 liter engine. You can get more displacement either by increasing the number of cylinders or by making the combustion chambers of all the cylinders bigger (or both).
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