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


Answer: C

Trades & Technology

You might also like to view...

Technician A says that the purpose of the intake air temperature (IAT) sensor is to provide the engine computer (PCM) with the temperature of the air in the cylinders. Technician B says that the IAT sensor information is used for fuel control (adding or subtracting fuel) and spark timing, depending on the temperature of incoming air. Which technician is correct?

A) Technician A only B) Technician B only C) Both technicians D) Neither technician

Trades & Technology

An oil pressure warning lamp is usually controlled by which of these devices?

A) Ground sensor B) Manual switch C) Voltage drop D) Sensor unit

Trades & Technology

One Newton is equal to

Trades & Technology

What is the chief economic disadvantage of recycling plastics?

What will be an ideal response?

Trades & Technology