What is the unit of displacement?

[Jill]

The unit of displacement is "liter". The total working volume of a cylinder is the sum of the cylinder's working volume and the combustion chamber volume, usually measured in "liters". The sum of the working volumes of all cylinders in an engine is the total displacement of that engine (i.e., displacement). Currently, the main unit of displacement is "liter" (L), and there is also "milliliter" (ml, 1 liter = 1000 milliliters), which can also be expressed as "CC". Displacement classification: In China, the classification of cars is based on displacement size. Cars with a displacement of 1.0L or less are classified as micro cars; those with a displacement between 1.0~1.6L are classified as standard cars; those between 1.6~2.5L are mid-size cars; those between 2.5~4.0L are upper-mid-size cars; and luxury cars have a displacement greater than 4.0L. Significance: Generally, a larger displacement means the engine releases more energy (converting chemical energy from fuel into mechanical energy) per unit time, which translates to better "power performance". SUVs and sports cars usually have relatively larger displacements.