Reciprocating Engine - Engine Capacity

Engine Capacity

For piston engines, an engine's capacity is the engine displacement, in other words the volume swept by all the pistons of an engine in a single movement. It is generally measured in litres (L) or cubic inches (c.i.d. or cu in or in³) for larger engines, and cubic centimetres (abbreviated cc) for smaller engines. All else being equal, engines with greater capacities are more powerful and provide greater torque at lower speed (rpm) and consumption of fuel increases accordingly, although power and fuel consumption are affected by many factors outside of engine displacement.