Approximate adiabatic flame temperature from fuel LCV, stoichiometric products and excess air. Bounded by gas dissociation in practice.
Formula
$$ T_{ad} = T_\text{in} + \frac{\text{LCV}}{(AFR + 1) \cdot c_p} $$
Symbol legend
| Symbol | Meaning | Unit | Source |
|---|---|---|---|
| $LCV$ | Lower calorific value | kJ/kg | ISO 8217 |
| $AFR$ | Actual air-fuel ratio | - | input |
| $c_p$ | Mean product specific heat | kJ/(kg·K) | thermodynamic table |
| $T_\text{in}$ | Inlet air temperature | °C | air manifold |
Sources
- Heywood - Internal Combustion Engine Fundamentals.