
Stroke ratio
Mechanical measurement

Mechanical measurement
Stroke ratio, today often defined as bore/stroke ratio, is a term to describe the ratio between cylinder bore diameter and piston stroke length in a reciprocating piston engine. This can be used for either an internal combustion engine, where the fuel is burned within the cylinders of the engine, or external combustion engine, such as a steam engine, where the combustion of the fuel takes place outside the working cylinders of the engine.
Read on Wikipedia · Image MichaelFrey, CC BY-SA 3.0
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