körfogat

Körfogat is a Swedish automotive term describing the engine displacement, the total volume swept by the pistons of all cylinders in an internal combustion engine. It is usually expressed in cubic centimeters (cc) or liters (L). In English, the closest equivalents are engine displacement or cylinder capacity. The displacement is determined by the geometry of the engine: for each cylinder, volume = π/4 × bore^2 × stroke; the total displacement is this per-cylinder volume multiplied by the number of cylinders.

Larger displacement generally enables higher torque and power, especially at lower RPMs, but actual output depends on many factors, including air–fuel ratio, turbocharging, camshafts, and efficiency.

Displacement is a traditional metric for comparing engines and for certain regulatory purposes, such as vehicle taxation or insurance classifications in some countries. In recent decades, emphasis in many jurisdictions has shifted toward measuring emissions or fuel economy rather than displacement alone.

Typical displacement values vary by vehicle class: small cars 0.8–1.6 L, motorcycles 0.5–1.3 L, larger cars 2.0–3.0 L or more.

Körfogat should not be confused with power output (horsepower or kilowatts) or with fuel consumption, both of which depend on many factors besides displacement.