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
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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
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
One Newton is equal to
What is the chief economic disadvantage of recycling plastics?
What will be an ideal response?