CFM56-5B TRAINING MANUAL
EFG

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CTC-201-290-00
EFFECTIVITY
73-21-60 Page 25
ALL CFM56-5B ENGINES FOR A319-A320-A321
ENGINE SYSTEMS Jan 03

CFMI PROPRIETARY INFORMATION
CFM56-5B TRAINING MANUAL

EFG
ELECTRONIC CONTROL UNIT
ECU Control Alternator.
The control alternator supplies electrical power directly to the ECU and is installed on the front face of the Accessory GearBox (AGB).
It is located between the Integrated Drive Generator (IDG) and the hydraulic pump and consists of :
-A stator housing, secured on the attachment pad by means of three bolts.
-
 Two electrical connectors, one for each ECU
channel.

-
 A rotor, secured on the AGB gearshaft by a nut.

This control alternator is a “wet” type alternator, lubricated with AGB engine oil.
Functional Description.
The control alternator consists of a rotor and stator enclosing two sets of windings.
The rotor contains permanent magnets, and is secured on a stub shaft extending from the drive pad of the AGB. It is seated in position through 3 flats and a securing nut.
The windings are integrated with the housing structure, and surround the rotor when the housing is mated to the drive pad mounting boss.
Each set of windings supplies a three-phase power signal to each ECU connector on the forward face of the housing.
Each power signal is rated between 14.2 and 311 VAC depending on core speed and load conditions.
The alternator continues to meet all electrical power requirements at core speed above 45%, even if one phase in either set, or one phase in both sets of windings fails.

EFG

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CTC-201-017-02
EFFECTIVITY
73-21-60 Page 27
ALL CFM56-5B ENGINES FOR A319-A320-A321
ENGINE SYSTEMS Jan 03

CFMI PROPRIETARY INFORMATION
CFM56-5B TRAINING MANUAL
EFG
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EFG
ENGINE SENSORS

EFFECTIVITY
SENSORS Page 1
ALL CFM56-5B ENGINES FOR A319-A320-A321
ENGINE SYSTEMS Jan 03

CFMI PROPRIETARY INFORMATION
CFM56-5B TRAINING MANUAL
EFG
ENGINE SENSORS
Aerodynamic stations.
The ECU requires information on the engine gas path and operational parameters in order to control the engine during all flight phases.
Sensors are installed at aerodynamic stations and various engine locations, to measure engine parameters and provide them to the ECU subsystems.
Sensors located at aerodynamic stations have the same number as the station. e.g. T25.
Sensors placed at other engine locations have a particular name. e.g. T case sensor.

EFG
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CTC-201-044-01
EFFECTIVITY
SENSORS Page 3
ALL CFM56-5B ENGINES FOR A319-A320-A321
　
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