What does the cylinder of a car mean?

[VonRobert]

The cylinder of a car refers to the cylindrical chamber in the engine where a piston is driven by the pressure or expansion force of the working fluid. In some special types of engines, there may be similar but non-cylindrical parts. Below is some relevant information: Number of cylinders: The number of cylinders indicates the quantity of cylinders in a car's engine. Common cylinder counts for car engines currently include 3, 4, 5, 6, 8, 10, and 12 cylinders. Engines with a displacement below 1 liter typically use three cylinders, those between 1.0 and 2.5 liters usually have four cylinders, around 3 liters generally have six cylinders, around 4 liters have eight cylinders, and those above 5.5 liters usually have twelve cylinders. Considerations: The forces acting on a cylinder during operation are influenced by many factors. The pressure difference between the gases inside and outside the cylinder affects it, and the cylinder also has to withstand the reaction force from the steam outflow when it is stationary. Therefore, special attention is needed when selecting a cylinder. If an appropriate cylinder is not chosen, it may not only damage the equipment but also delay the work.