To produce power, an engine needs three things: air, fuel and an ignition source.
The air-fuel ratio is key. When we talk about the air-fuel mixture, it can be rich – when there’s too much fuel. It can be lean – when there’s not enough fuel. Or it can be … just right.
When the air-fuel ratio is just right, the engine is burning fuel at maximum efficiency, which some people call the stoichiometric ratio, or even just “stoich.” Oxygen sensors play a very important role in all of this.
This video is sponsored by the Automotive Distribution Network.
