1-11 Flashcards
Purpose of engine fuel system is to
provide means of supplying sufficient fuel to meet engines demand
System requirements
Deliver fuel to combustion section
Protect engine against damage due to speed, temp, and pressure
Engine-Drien fuel pump purpose
provide continuous supply of fuel
Engine driven fuel pump is a _____type pump.
Gear. (most generally used)
It is mounted on an driven by
accessory gearbox
Boost element is an impeller that will
increase fuel pressure above inlet pressure, deaerate fuel, circulate fuel through fuel deicing heater.
Fuel Heater prevents
ice from forming
Filter assembly removes
impurities from fuel before fuel enters pressure stage of pump
Micro Filter type is used to
remove foreign matter measuring 10 - 25 microns
Wafer type
withstand high pressure
plain screen mesg
when filtering isnt critical
filter bypass valve will ensure
flow of fuel to pump gear stage diring event of clogg
Pump relief valve will
limit pump discharge pressure from the gear stage to protect fuel control from excessive pressures
fuel control purpose
regulates fuel flow to maintain satisfactory engine performance
fuel control is mounted on
accessory gearbox