Cylinder banks
Piston
engines are typically arranged with their pistons in rows,
moving inside individual cylinders. This allows the engine
block to be built from a single piece of metal, which is
machined. Engines often have more than one row of pistons,
each with their own block, and these are referred to as cylinder
banks.
Note that not all engine
configurations have cylinder banks. Radial
engines have each piston in a separate cylinder, and this was
common in earlier in-line engine designs as well.
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