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Flashcards in Engine Deck (26):
1

What engine the E170 has

GE CF34-8E turbo fan
High by pass
2 spool axial flow

2

Power output of the engine

13000- 14200

3

How is the engine controlled

By the FADEC ( dual channel)

4

What are the subsystems of the engine fuel system

Fuel control system
Fuel distribution system

5

Components of the fuel distribution system

Fuel pump
Fuel filter
Fuel manifold
18 fuel injectors

6

Components of the fuel control system

FADEC
FMU
Permanent magnet alternator
Engine sensors
Variable geometric actuator
operavility bleed valve

7

What part of the engine is lubricated

The engine main shaft bearings
And the accessories gearbox

8

Where can you see the engine temp/pressure/quantity

Temp/press are display on ICAS
Oil quantity on MFD

9

How many igniters per engine

2 igniters .
One used for ground start , two for inflight start
Controlled by the FADEC

10

What happens when OVRD is selected

Both igniters are energized always

11

What does the starting system consist of

Air turbine starter ATS
Starter control valve. SCV

12

Describe N2 spool

10 stage compressor
2 stage HP turbine

12

Describe the N1 spool

Single fan
4 stage LP turbine

13

Can igniters be turned off in flight

FADEC will disregard any OFF selection in flight
Only on ground for dry motoring

14

What does the cyan line represents on the N1 dial on approach
When does it come on

It indicates the minimum N1 bleed requirements for Icing conditions
It comes on at 1200 feet AGL when anti ice on

15

Does the FADEC provides engine start protection

Only on ground for hung, hot , or no light off start

16

What will the FADEC do in case of a HOT start

Will not allow FF if ITT is greater than 120C
It will continue to run the starter (dry motoring) until temps falls below 120 and re introduce fuel

17

Describe the start sequence

7% N2 ignition
20% N2 fuel flow
20% N2 +5 sec light off
50% N2 ignition off

18

What provides under-speed and overspeed protection

The FADEC via the FMU
52% N2 to 102% N2

19

What is ATTCS and what controls it

Automatic take-off thrust control system
FADEC controlled

20

What happens if a trust reverse inadvertently deploys

The FADEC will limit respective engine to IDLE thrust

21

What is flex

Reduce takeoff thrust based on assumed temps

22

What percentage N1 needed for windmill start

7.2% N1

23

What is the main power of the engines FADEC

The PMA permanent magnet alternator

24

Engine start max ITT

815C

25

How much cool down or warm up of engine

Min of 2 minutes