Technician A says that a variable displacement vane pump is similar to a vane pump, but uses a spring-loaded moveable pump housing that pivots to change pumping chamber volume. Technician B says that a variable displacement pump is used to increase vehicle fuel mileage. Who is correct?
A) Technician A
B) Technician B
C) Both technicians
D) Neither technician

Question

Quizplus · Accepted Answer

Technician A is correct because a variable displacement vane pump uses a moveable pump housing to change the volume of the pumping chamber. Technician B is also correct because variable displacement pumps can improve fuel efficiency by adjusting the pump's output to match the system's demand, reducing unnecessary energy consumption.

Technician a Says That a Variable Displacement Vane Pump Is