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Which of the following increases concerning the metering valve when the accelerator pedal is pressed?

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in Automotive Engine Design by (137k points)
Which of the following increases concerning the metering valve when the accelerator pedal is pressed?

(a) Temperature

(b) Pressure

(c) Area

(d) Enthalpy

I got this question in an interview.

This key question is from Fuel Injection Pump topic in section Diesel Engine Fuel Supply System of Automotive Engine Design

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Best answer
Correct choice is (c) Area

Easiest explanation: A metering valve controlled by the governor regulates the amount of fuel entering the rotor. Pressing the accelerator pedal increases the area of the metering port allowing more fuel to enter the rotor, thereby increasing the engine speed.

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