Engine Fuel and Fuel Metering Systems

Question 1

What is the function of a float carburetor? ( AM.III.1.K2 )

Answer 1

The carburetor float needle, moved by the float, controls fuel flow, maintaining the fuel level in the chamber.

Question 2

What two things are adjusted when setting the idling conditions on a float carburetor ? (AM.III.I.K2)

Answer 2

a . Idling RPM by adjusting the throttle stop .

b . Idling mixture by adjusting idle needle valve .

Question 3

What would likely cause a reciprocating engine equipped with a float carburetor to hesitate momentarily when the throttle is rapidly advanced from idle to full power ? ( AM.III.I.K2 )

Answer 3

A malfunctioning accelerator pump .

Question 4

what is meant by tramming a turbine motor? am.iii.i.k8

Answer 4

Adjusting the fuel flow control for the proper gravity of the fuel and for proper idle and full throttle RPM

Question 5

What are 2 types of electronic fuel controls for turbine engines?

Answer 5

Supervisory electronic engine control

Full-authority digital electronic control

Question 6

What position should the flight deck fuel metering control or fuel condition lever be set to for starting a turbine engine?

Answer 6

1. rotate the compressor with the stater
2. turn the ignition on
3. open the engine fuel valve, either by moving the throttle to idle or by moving a fuel shutoff lever or turning a switch

Question 7

What are the three most common types of fuel filters?

Answer 7

-Micro
-Plain screen mesh
-Wafer screen

Question 8

Why do some aircraft filters have a relief valve?

Answer 8

if the filter becomes clogged, it can pass-by and get to fuel flow to the engine.