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┃I -~ A318 ┃I FDESCRIPTION ┃SEQ 001 1 ┃I REV 23 ┃
┃ .,,,.8, ,, ~L,~ A319 ┃ ┃ ┃ ┃
┃ Lli,~ A320 ┃ ┃ ┃ ┃
┃ A~7-~'M" A321 ┃ ┃ ┃ ┃
┃ FLIGHT CREW OPERATING MANUAL ┃ ┃ ┃ ┃
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FUEL QUANTITY INDICATION AND LEVEL SENSING
FUEL QUANTITY INDICATION (FQI) SYSTEM
The FQI is a computerized system that :
- transmits the actual total fuel mass, as well as the quantity and temperature of fuel in
the tanks, to the ECAM.
- controls automatic refueling.
Two channels perform fuel computations : channel 2 activates automatically if channel 1
fails.
The FQI system comprises :
- an FQI computer.
- a set of capacitance probes in each tank to measure fuel level and temperature.
- one densitometer (cadensicon) sensor in each wing inner tank permitting the calculation
of the fuel quantity.
- one Capacitance Index Compensator (CIC) in each inner tank giving the dielectric
constant of the fuel in case of cadensicon failure.
- a quantity indicator for each tank installed on the refuel/defuel panel.
- a preselector on the refuel/defuel panel that shows the preselected and actual total fuel
quantity.
FUEL LEVEL SENSING CONTROL UNIT (FLSCU)
The fuel level system generates fuel-level and fuel-temperature signals in order to operate
the appropriate switching functions for refueling and defueling and control the IDG cooling
recirculation system and the center-tank-to-wing-tank fuel transfer system.
The FLSCU comprises :
- fuel level sensors in the tanks to sense high, low, and overflow levels.
- a fuel temperature sensor to control the IDG cooling recirculation.
When fuel quantity in one wing tank goes below 750 kg (1650 Ib), the low-level sensor
triggers the LO LVL warning on ECAM.
CCM ALL
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┃I ~-~ A318 ┃ FUEL ┃1.28.10 P 9 ┃
┃ aw aw ,, ~L,~ A319 ┃ ┃ ┃
┃ Lli,~ A320 ┃ ┃ ┃
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本文链接地址：
AIRBUS A320 Flight Crew Operating Manual3(128)
