Air–fuel Ratio

Written by Jerry Ratzlaff on . Posted in Fluid Dynamics

Air–fuel ratio, abbreviated as AFR, is the mass ratio of air to fuel mixture present in an internal combustion engines.  Because it is a ratio, it is unitless.


Air–fuel ratio calculator


Air–fuel ratio formula

\(\large{ AFR = \frac {m_a} {m_f} }\)   


\(\large{ AFR }\) = air–fuel ratio

\(\large{ m_a }\) = air mixture

\(\large{ m_f }\) = fuel mixture


Tags: Equations for Power Equations for Air Calculators