engine capacity 

Engine Displacement is referred to as displacement, which is the sum of the working volumes of each cylinder of the engine, the product of the single cylinder displacement Vh and the cylinder number I. The cylinder working volume refers to the volume of gas swept by the piston from top dead center to bottom dead center, also known as single cylinder displacement, which depends on the bore diameter and piston stroke.

Displacement is a more important structural parameter, which can comprehensively measure the size of the engine. The performance index and displacement of the engine are closely related. Generally speaking, the larger the displacement of the car, the higher the power. Usually the unit displacement is used. Evaluate the basis of different engine sizes.

The sum of the working volumes of each cylinder of a multi-cylinder engine is called the engine displacement.

Generally expressed in VL: VL=Vh×i=(S*π*D2/4)*4: Vh-cylinder working volume