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and HP fuel shut off valves for that engine's fuel system.
It also closes the fuel return valve and opens the bypass valve.
The FADEC
- controls
- controls
- protects
FUEL FLOW
controls the HMU, which :
fuel flow to the engine combustion chamber
fuel hydraulic signals to actuators
against overspeeding.
The Fuel Metering Valve (FMV) transforms FADEC orders through a torque motor and servo
valve into fuel flow to the engine fuel nozzles.
The FMV resolver generates a feedback signal proportional to the FMV position.
The bypass valve maintains a constant pressure drop across the FMV to ensure that the
metered fuel flow is proportional to the FMV position.
TO
FUEL
RETURN
VALVE
TO NOZZLES
FUEL
FROM
SERVO/FUEL
HEATER
CCM ALL
┏━━━━━━━━━━━━━━━━┳━━━━━━━┳━━━━━━━━━━━┓
┃I  -~ A318                      ┃POWER PLANT   ┃1.70.40     P 3       ┃
┃  .*,,.8, ,, ~4W~ A319          ┃              ┃                      ┃
┃                                ┃              ┣━━━━━┳━━━━━┫
┃ Lli,~ A320                     ┃              ┃SEQ 105 I ┃I REV 34  ┃
┃      A~7-~'M" A321             ┃ FUEL SYSTEM  ┃          ┃          ┃
┃   FLIGHT CREW OPERATING MANUAL ┃              ┃          ┃          ┃
┗━━━━━━━━━━━━━━━━┻━━━━━━━┻━━━━━┻━━━━━┛
The FADEC computes the fuel flow that will maintain the target N1.
As the FADEC maintains this N1, it allows N2 to vary while remaining between N2
minimum and N2 maximum. The FADEC also controls the engine parameters to :
- Limit acceleration and deceleration ;
- Avoid engine stall or flameout ;
- Limit maximum N1 and N2 ;
- Maintain air bleed pressure requirement.
The FADEC computes an N2 correction according to the bleed configuration.
i FUEL HP VAL
   ENG BLEED V
   PACK VALVE
   X BLEED VAL
   WING ANTI-I
    ENG ANTI-IC
    ENG ANTI-IC
┏━━━━━━━┳━━━━━━━━┳━━━━━┳━┳━┳━━━━━━━━━━━┓
┃              ┃                ┃          ┃  ┃  ┃                      ┃
┣━━━━━━━┫                ┃          ┃  ┃  ┃                      ┃
┃jTPOS~TIONS~  ┃  CONTROLLERONE ┃          ┃  ┃  ┃ THRUST PENALTIESADEC ┃
┃/ALVES POS.   ┃                ┃          ┃  ┃  ┃     COMPUTATION      ┃
┃~LVES POS.    ┃                ┃          ┃  ┃  ┃                      ┃
┃%             ┃                ┃          ┃  ┃  ┃                      ┃
　
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本文鏈接地址：AIRBUS A320 Flight Crew Operating Manual5(161)