What should AFR be at WOT?
Best performance for most vehicles is in the 12.5 to 13 AFR range. Going too rich will have the opposite affect and decrease your performance. Getting up to cruising speed or getting ready to pass someone, you usually are looking for the performance to get up and go. Best performance for most vehicles is around 12 AFR.
What is the best air-fuel ratio for power?
It used to be that 12.5:1 was considered the best power ratio, but with improved combustion chambers and hotter ignition systems, the ideal now is around 12.8:1 to 13.2:1. This is roughly 13 parts of air to one part fuel.
What air-fuel ratio is too lean?
14.7:1
In a real engine, a 14.7:1 air-fuel ratio is a little too lean. To compensate for incomplete combustion, and to reduce NOx emissions, modern automobiles are tuned to run more rich, sometimes dipping as low as 12:1 or even richer during high-load situations.
What should the air fuel ratio be in a gasoline engine?
For the combustion process to take place in a gasoline engine, the minimum AFR is around 6:1 and the maximum can go up to 20:1. When the air-fuel ratio is higher than the stoichiometric ratio, the air-fuel mixture is called lean.
What kind of fuel mix chart do I Need?
These gas and oil fuel mixture charts are a handy reference for those using any type of engine that requires mixed fuel. Sawbars Sawchains Stihl vs Husqvarna Mixing Charts
What is the gas and oil mix ratio?
Gas and Oil Mixing Charts The following gas and oil fuel mix ratio chartsare a handy reference for those using any type of engine that requires mixed fuel.
How is the stoichiometric air-fuel ratio calculated?
In order to understand how the stoichiometric air-fuel ratio is calculated, we need to look at the combustion process of the fuel. Combustion is basically a chemical reaction (called oxidation) in which a fuel is mixed with oxigen and produces carbon dioxide (CO 2 ), water (H 2 O) and energy (heat).