What is the air fule ratio of petrol engine

Question

Accepted Answer

The air fuel ratio of a petrol engine is typically around 14.7:1.

Air fuel ratio refers to the amount of air and fuel that is mixed together in the engine's combustion chamber.
Petrol engines typically operate at a ratio of around 14.7 parts air to 1 part fuel.
This ratio is known as the stoichiometric ratio and is considered the ideal ratio for complete combustion.
However, in certain situations such as during acceleration or high load, the ratio may be adjusted to provide more fuel for increased power.
On the other hand, during deceleration or low load, the ratio may be adjusted to provide more air for improved fuel efficiency.

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