Engine Displacement
How is engine displacement calculated?
Bore (Cylinder Diameter): The diameter of the cylinder.
Stroke: The distance the piston travels inside the cylinder. When the piston moves from the Top Dead Center (TDC) to the Bottom Dead Center (BDC), the distance it covers is called the stroke.
Example: 2003 Honda CBR600RR
Engine type: Liquid-cooled, four-stroke, inline-four, 16-valve DOHC
Bore: 67.0 mm
Stroke: 42.5 mm
Displacement Calculation:
Displacement=Cylinder Cross-Sectional Area×Stroke×Number of Cylinders\text{Displacement} = \text{Cylinder Cross-Sectional Area} \times \text{Stroke} \times \text{Number of Cylinders}
Stroke: 42.5 mm = 4.25 cm
Bore: 67.0 mm = 6.7 cm
Cylinder cross-sectional area: 3.35×3.35×3.1416=35.25 cm23.35 \times 3.35 \times 3.1416 = 35.25 \, \text{cm}^2
Total Displacement=35.25×4.25×4=599 cc\text{Total Displacement} = 35.25 \times 4.25 \times 4 = 599 \, \text{cc}
Thus, the engine displacement of the Honda CBR600RR is 599 cc.