DOC AIRBUS | AMM A320FENGINE CONTROLS - GENERAL - DESCRIPTION AND OPERATION
** ON A/C NOT FOR ALL
1. General
The engine control system consists of:
** ON A/C NOT FOR ALL The engine control system consists of:
- The throttle control lever
- The HP fuel shut-off valve control
- The LP fuel shut-off valve control.
2. Component Location
** ON A/C NOT FOR ALL 
Control and Indicating| FIN | FUNCTIONAL DESIGNATION | PANEL | ZONE | ACCESS DOOR | ATA REF |
|---|---|---|---|---|---|
| ** ON A/C NOT FOR ALL | |||||
| 2KC | CTL SW-ENG/MASTER 2 | 115VU | 210 | 73-31-00 | |
| 3KC | CTL SW-ENG/MASTER 1 | 115VU | 210 | 73-31-00 | |
| 8KS1 | CTL UNIT-THROTTLE, ENG 1 | 11VU | 210 | 76-11-19 | |
| 8KS2 | CTL UNIT-THROTTLE, ENG 2 | 11VU | 210 | 76-11-19 | |
3. System Description
A. Throttle Control Lever
The throttle control system is fully electrical. The throttle control lever drives several position detectors. The position detectors are located under the cockpit center pedestal. Two of them are resolvers dedicated to the FADEC system. Each channel of the electronic engine control receives the position signal from one resolver in the analog form.
The throttle control system is fully electrical. The throttle control lever drives several position detectors. The position detectors are located under the cockpit center pedestal. Two of them are resolvers dedicated to the FADEC system. Each channel of the electronic engine control receives the position signal from one resolver in the analog form.
B. ENG/MASTER Control Switch
The ENG/MASTER control switch has an interface with:
A discrete signal informs the EEC of the position of the ENG/MASTER control switch.
In parallel, a discrete signal informs the EIU of the position of the MASTER control switch.
The EIU then transmits the information to the EEC in digital form.
The EEC uses the two MASTER control switch discrete signals to determine the position of the MASTER lever switch. If there is a disagreement between the two discrete signals, the EIU digital signal is considered.
The EEC uses this information in addition to the ENG/MODE selector switch position and manual start pushbutton switch to control the starting sequence (Ref. AMM D/O 80-11-00-00).
The ENG/MASTER control switch has an interface with:
- The Integrated Fuel Pump and Control (IFPC)
- The LP fuel shut-off valve
- The Engine Interface Unit (EIU)
- The Engine Electronic Control (EEC)
- The G/Y hydraulic power transfer system.
A discrete signal informs the EEC of the position of the ENG/MASTER control switch.
In parallel, a discrete signal informs the EIU of the position of the MASTER control switch.
The EIU then transmits the information to the EEC in digital form.
The EEC uses the two MASTER control switch discrete signals to determine the position of the MASTER lever switch. If there is a disagreement between the two discrete signals, the EIU digital signal is considered.
The EEC uses this information in addition to the ENG/MODE selector switch position and manual start pushbutton switch to control the starting sequence (Ref. AMM D/O 80-11-00-00).
C. LP Fuel Shut-Off Valve Control (Ref. 28-24-00)
The LP fuel shut-off valve is electrically controlled:
The LP fuel shut-off valve is electrically controlled:
- Either by the ENG/MASTER control switch on the ENG panel
- Or by the ENG FIRE pushbutton switch.