Basic Equation

Engine_Power = (n * ( π / 4 ) * D² * L) * p * N

Equation Explained

• EnginePower (Watts)

• n (Number of Cylinders)

• D (Piston Diameter, Meters)

• L (Piston Stroke, Meters)

• p (Mean Effective Pressure, N/m²)

• N (number of firing strokes per second, which equals the number of revolutions per second in the case of two-stroke engines and half the number of revolutions per second in the case of four stroke engines.)

Note: 10,000 N/m² equals 1 Bar.

Bibliography:
Technology of Tanks by R.M. Ogorkiewicz.