Engines FCC class

Low-Pressure Compressor (LPC)

Diffuser and Combustion Chamber

Exhaust Case

Fuel Pump

5

12

17

24

To supply turning force for the high-pressure compressor

To supply turning force for the low-pressure compressor

To drive the gearbox assembly

To control the electronic engine control

Seven stages total: two in HPT, five in LPT

Five stages total: two in HPT, three in LPT

Seven stages total: three in HPT, four in LPT

Six stages total: three in HPT, three in LPT

To monitor and control all engine functions, including fuel scheduling for all operational conditions

To supply turning force for the high-pressure compressor

To provide power to drive the engine and aircraft accessories

To control the hydraulic pumps only

Each channel has its own processor and power supply

Only one channel can control the engine at a time

Both channels share the same input sensors

The EEC output signals allow either channel to control the engine

To adapt the EEC to the engine configuration it is controlling

To provide power to the EEC

To monitor engine temperature

To convert binary code to ohms

There are 12 electrical connectors on the EEC

Six connectors are blue and represent the 'A' channel

The white connector allows interface through ARINC 429 Data link

All connectors are located at the bottom

EGT

HPT Temperature

T3.5 (Temp at station 3.5)

N2 RPM

Above 5%

Above 10%

Above 15%

Above 20%

To provide electrical power to the EEC

To store oil for lubrication

To regulate fuel temperature

To cool the engine oil

Mounted to the fan exit case at approx. 7:00 position

Storage of oil supply

Pressurized hot tank

Delivers oil to 5 bearings

To deliver oil to engine bearings and scavenge used oil

To heat the engine oil

To store excess oil

To regulate fuel temperature

To heat inter-stage fuel and cool engine/IDG oil

To store oil for the engine

To regulate oil pressure

To deliver oil to bearings

Corrosion Identification/control

Foreign Object Damage prevention

Engine Configuration

Flight Crew Scheduling