What does engine piston stroke mean?

[LaGenevieve]

Engine piston stroke refers to the distance the piston travels between the two dead centers (i.e., top dead center and bottom dead center), also known as the stroke, which is one of the important parameters of an engine. Piston stroke size: The piston stroke is equal to the rotational diameter length of the crankshaft connecting rod section. It is generally represented by 's', and for one piston stroke, the crankshaft rotates 180 degrees. The piston stroke not only increases the overall height of the engine but also is not conducive to increasing the engine's speed. Piston stroke process: For a compressor, one cycle is completed every two piston strokes. Each cycle includes four processes: expansion, intake, compression, and exhaust, requiring the crankshaft to rotate two turns, i.e., 720 degrees.