<Tr> <Td> </Td> <Td> This article needs additional citations for verification . Please help improve this article by adding citations to reliable sources . Unsourced material may be challenged and removed . (May 2012) (Learn how and when to remove this template message) </Td> </Tr> <Ol> <Li> Intake </Li> <Li> Compression </Li> <Li> Power </Li> <Li> Exhaust </Li> </Ol> <P> A cylinder is the central working part of a reciprocating engine or pump, the space in which a piston travels . Multiple cylinders are commonly arranged side by side in a bank, or engine block, which is typically cast from aluminum or cast iron before receiving precision machine work . Cylinders may be sleeved (lined with a harder metal) or sleeveless (with a wear - resistant coating such as Nikasil). A sleeveless engine may also be referred to as a "parent - bore engine". </P> <P> A cylinder's displacement, or swept volume, can be calculated by multiplying its cross-sectional area (the square of half the bore by pi) by the distance the piston travels within the cylinder (the stroke). The engine displacement can be calculated by multiplying the swept volume of one cylinder by the number of cylinders . </P>

What does the amount of cylinders in a car mean
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