While having a discussion, Technician A says that GDI has the ability to run the engine with a variable air-fuel mixture that can be extremely lean with an overall average ratio of around 40:1. Technician B says that this can increase fuel economy by as much as 30%. Who is correct?
A) A only
B) B only
C) Both A and B
D) Neither A nor B

Question

Quizplus · Accepted Answer

GDI (Gasoline Direct Injection) engines can indeed operate with a lean air-fuel mixture, sometimes as lean as 40:1, which is significantly leaner than the stoichiometric ratio of 14.7:1 used in traditional gasoline engines. This capability can lead to improved fuel efficiency, potentially increasing fuel economy by up to 30%. Therefore, both Technician A and Technician B are correct.

While Having a Discussion, Technician a Says That GDI Has