Stoichiometric Air-Fuel Ratio 

03/19/26

“What’s the ratio of air-fuel mass in combustion to ensure all ingredients are used?”

Combustion reactions require air and fuel. If the ratio of air to fuel is not perfect, there will be some unspent air or fuel at the end. The ratio where all air and fuel are consumed in the reaction is called the Stoichiometric Air-Fuel Ratio. The stoichiometric air-fuel ratio produces only carbon dioxide, water, and nitrogen.