Engine displacement represents the swept volume of all the pistons inside the engine cylinders. It is typically calculated using the following formula: Displacement = (/4) bore stroke * number of cylinders. In this formula, ‘bore’ refers to the diameter of each cylinder, ‘stroke’ refers to the distance a piston travels within its cylinder, and ” (pi) is a mathematical constant approximately equal to 3.14159. For example, a four-cylinder engine with a bore of 84mm and a stroke of 90mm would have a displacement of approximately 2.0 liters.
This measurement is crucial for understanding an engine’s power potential and fuel consumption characteristics. Larger displacement engines generally produce more power but consume more fuel, while smaller displacement engines often prioritize fuel efficiency. Historically, displacement has been a key factor in classifying vehicles and determining taxation in some regions. Understanding this metric allows for informed decisions regarding vehicle selection, maintenance, and performance modifications.