The ideal air-fuel mixture for a gasoline engine is _____.
A)13.5:1
B)16:1
C)10.5:1
D)14.7:1

Question

Quizplus · Accepted Answer

The ideal air-fuel mixture for a gasoline engine is 14.7:1, also known as the stoichiometric ratio. At this ratio, there is just enough oxygen in the air to completely burn all of the fuel, resulting in the most efficient combustion and lowest emissions. The other ratios listed may be used in certain engine applications, but 14.7:1 is considered the ideal for most gasoline engines.

The Ideal Air-Fuel Mixture for a Gasoline Engine Is _____