The catalytic converter is most efficient when the air-fuel mixture is ________.

Question

Quizplus · Accepted Answer

Both options A and B are correct. The catalytic converter is designed to operate optimally when the air-fuel mixture is at a specific ratio, which is 14.7:1 air/fuel ratio or 1.0 lambda. However, to maintain proper functioning of the converter, it is necessary for the air-fuel mixture to vary from rich to lean (0.9 to 1.1 lambda). Therefore, options A and B are correct, and option C is incorrect.

The Catalytic Converter Is Most Efficient When the Air-Fuel Mixture