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┃                                ┃                            ┣━━━━━┳━━━━━┫
┃I  -~ A318                      ┃I             FDESCRIPTION  ┃SEQ 100 1 ┃I REV 25  ┃
┃  .,,,.8, ,, ~L,~ A319          ┃                            ┃          ┃          ┃
┃ Lli,~ A320                     ┃                            ┃          ┃          ┃
┃      A~7-~'M" A321             ┃                            ┃          ┃          ┃
┃   FLIGHT CREW OPERATING MANUAL ┃                            ┃          ┃          ┃
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GENERAL
The main fuel pump system supplies fuel from the center tank or the inner wing tanks to
the engines. The system has six main fuel pumps.
MAIN COMPONENTS
TANK PUMPS
In normal operation each engine is supplied by one pump in the center tank or two pumps
in its own side wing tank.
All wing tank pumps remain on throughout the flight. They are fitted with pressure relief
sequence valves which ensure that, when all pumps are running, the center tank pumps
will deliver fuel preferentially.
TRANSFER VALVES
Two electrical transfer valves are mounted in each wing to permit fuel transfer from outer
to inner tank.
CROSS FEED VALVE
  A cross feed valve controlled by a double motor allows both engines to be fed from one
  side or one engine to be fed from both sides.
ENGINE LP VALVES
The fuel flow to an engine can be stopped by its low pressure (LP) fuel valve, the closure
of the LP fuel valve is by :
- the engine master switch, or
- the ENG FIRE PUSH pushbutton.
SUCTION VALVES
Closed by pumps pressure in normal operation, they allow engines to be fed by gravity if
the inner tank pumps fail.
Note : Center tank pumps are not fitted with suction valves. Therefore, gravity feeding is
       not possible from the center tank.
CCM ALL
ENGINE FEED
CCM ALL
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┃  .*,,.8, az ~e~ A319           ┃    FUEL    ┃1.28.10     P 3       ┃
┃                                ┃            ┣━━━━━┳━━━━━┫
┃ Lli,~ A320                     ┃            ┃SEQ 100 J ┃J REV 23  ┃
┃      A~7-~'M" A321             ┃DESCRIPTION ┃          ┃          ┃
┃   FLIGHT CREW OPERATING MANUAL ┃            ┃          ┃          ┃
　
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本文鏈接地址：AIRBUS A320 Flight Crew Operating Manual3(124)