A Simple EGR calculator.

Now available as an app to the iPhone in Appstore.
CnHmOr + λ(n + 0.25m - 0.5r)(O2 + 3.773N2) = nCO2 + 0.5mH2O + (λ-1)(n + 0.25m - 0.5r)O2 + 3.773λ(n + 0.25m - 0.5r)N2

λ = n = m = r =
EGR (%) =