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E2-190 systems > Fuel > Flashcards

Fuel Flashcards

1
Q

What does the fuel system provide fuel for?

A

The engines and APU

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2
Q

What are the main functions of the Fuel System?

A
  • Feeding the engines
  • Feeding the APU
  • Refueling the aircraft
  • Defueling operations
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3
Q

Where can fuel system controls and indications be found?

A
  • Fuel synoptic page
  • EICAS
  • Fuel and Fuel Transfer overhead panel
  • Refuel/defuel panel
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4
Q

What are the components of the Fuel System?

A
  • Storage system with three independent tanks
  • Indications for monitoring fuel quantities
  • Distribution of fuel to engines and APU
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5
Q

What types of tanks are included in the fuel storage function?

A
  • Center tank
  • Left wing tank
  • Right wing tank
  • Collector tanks
  • Surge tanks
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6
Q

What is the maximum usable fuel quantity in the central tank?

A

11,600 l or 9,310 kg

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7
Q

What is the total usable fuel quantity in all tanks?

A

17,060 l or 13,690 kg

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8
Q

What is the purpose of the vent system in the fuel tanks?

A

To maintain the pressure differential between the tanks and ambient conditions

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9
Q

What are the main functions of surge tanks?

A
  • Act as vent tanks
  • Collect fuel entering the vent system
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10
Q

What indicates a low fuel level condition in the wing tanks?

A

EICAS message FUEL 1 LO LEVEL and/or FUEL 2 LO LEVEL

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11
Q

What happens when the fuel temperature is equal to or lower than -37°C?

A

A caution message ‘FUEL TANK LO TEMP’ appears on EICAS

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12
Q

What is the role of the ejector pump in each wing tank?

A

It is the primary fuel pump for engine fuel feed

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13
Q

What color indicates a normal operating range for fuel temperature on EICAS?

A

GREEN

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14
Q

How is fuel used indicated on the MCDU Flight Summary page?

A

FUEL USED for engines and APU are visible

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15
Q

What is the function of the crossfeed operation in the fuel system?

A

To supply fuel to both engines from one wing tank

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16
Q

What does the EICAS message ‘FUEL IMBALANCE’ indicate?

A

A fuel imbalance condition of 360 kg (800 lb) or more between the wing tanks

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17
Q

What is the indication for an electrical pump that is ON?

A

A gray circle with a green windmill

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18
Q

Fill in the blank: The Fuel Distribution function controls the flow of fuel to and from the _______.

A

[tanks]

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19
Q

What does the pressure relief valve protect the fuel tanks from?

A

Overpressure

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20
Q

What happens when fuel quantity in a wing tank is below 400 kg?

A

Low-level sensor activates and EICAS displays low level message

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21
Q

What is the function of the water drain valves in the fuel tanks?

A

To collect water by gravity and discharge accumulated water

22
Q

How is the status of the electrical pumps displayed?

A
  • Green for ON
  • White for OFF
  • Amber for invalid information
23
Q

What does the fuel management page display?

A
  • Current fuel quantity
  • Fuel flow
  • Ground speed
  • True airspeed
  • Ground specific range
  • Air specific range
24
Q

How are fuel quantity indications shown on the EICAS?

A
  • Total remaining fuel
  • Fuel remaining per tank
25
What does the internal line position of a fuel valve indicate?
* OPEN if aligned with flow * CLOSED if perpendicular to flow
26
What is the purpose of the engine fuel shutoff valve?
To isolate fuel to the engine in case of fire or when not running
27
What does a flap valve do in the fuel system?
Allows fuel to transfer from surge tanks into wing tanks
28
What is the function of the Fuel Quantity Management Computer (FQMC)?
To manage fuel quantity data from sensors
29
What happens to the Fuel USED indication after the first engine start?
It is automatically reset by the FMS
30
What is the indication for invalid fuel temperature data?
Amber dashed line
31
What does the FUEL MGT page 2/2 show?
* Total fuel flow * Total fuel used * Measurements for engines and APU
32
What is the role of the scavenge ejector pumps in the fuel system?
To transfer fuel to the collector tank and keep it full
33
What is the fuel density considered for fuel mass calculations?
0.803 kg/I
34
What color indicates low fuel quantity on the fuel synoptic page?
RED
35
What happens in the AUTO position regarding the AC fuel pumps?
The system operates the AC fuel pumps automatically, transferring fuel from the central tank to the wing tanks.
36
When is one of the Center AC Pumps activated?
When the quantity on both wing tanks is below 2,100 kg (4,630 lbs) or less.
37
At what quantity does the Center AC Pump deactivate?
When one of the wing tanks reaches 2,200 kg.
38
What EICAS CAUTION message appears if fuel reaches 2,300 kg in at least one wing tank?
FUEL WING OVERFILL.
39
Where is the refueling/defueling control panel located?
Under the right wing.
40
What occurs when the access panel door is opened with the airplane energized?
Indication of door open displays on MFD status page and on EICAS through DOOR FUELING OPEN advisory message.
41
What powers the pressurized refueling process?
AC or battery power.
42
Is gravity refueling available for the center tank?
No, gravity refueling is not available for the center tank.
43
How is fuel defueling controlled?
Through the refuel control panel using suction or pressure.
44
What must be opened to defuel the left tank?
The crossfeed shutoff valve on the Fuel panel.
45
What does the Fuel Filter do?
Removes solid contaminants from the pressurized fuel sent from the IFPC.
46
What is the purpose of the Fuel/Oil Heat Exchanger?
Allows heat to be exchanged between cold fuel and hot oil, preventing ice formation in the fuel and cooling the engine oil.
47
What does the on-board inert gas generation system (OBIGGS) do?
Automatically generates enriched nitrogen air to displace fuel vapors from tanks.
48
What EICAS message is displayed in case of failure of APS or OBIGGS?
FUEL INERT SYS FAIL.
49
What procedures for fueling and defueling are accomplished using the fuel control panel?
* Gravity Fueling Procedure * Pressure Fueling Procedure * Defueling Procedure * Fuel Transfer Between Tanks
50
What are the conditions for takeoff with cold soaked fuel frost on the upper wing surface?
* No precipitation or visible moisture * Ambient air temperature greater than 0°C * Frost inside the wing tank marked area

E2-190 systems (8 decks)

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