Stoichiometric Combustion

Just sufficient air is present for complete combustion of the fuel.

The stoichiometric air fuel ratio is defined as:


Some AFR values for common hydrocarbons are shown in the following table:

Examples
Methane CH4 17.17
Propane C3H8 15.61
Heptane C7H16 15.11
Octane C8H18 15.06
Benzene C6H6 13.2

See also: Lean Mixture, Rich Combustion.

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Subjects: Chemistry