The mass flow rate of a spark ignition engine, which is commonly used in aircraft for piston engines, can be calculated based on the engine’s displacement volume and its operating parameters. The formula for the mass flow rate (ṁ) is as follows:
– ṁ = Mass Flow Rate (in kilograms per second, kg/s)
– V = Displacement Volume of the engine (in cubic meters, m³)
– ρ = Density of the air-fuel mixture (in kilograms per cubic meter, kg/m³)
– A = Cross sectional area of Engine speed (in revolutions per minute, RPM, which may need to be converted to seconds)