PPRuNe Forums - View Single Post - A320 Engine Interface Unit (EIU)

16th Feb 2015, 12:12

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AF330

Join Date: Jul 2014

Location: Paris, France

Age: 23

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Thanks a lot mono,

So do you mean that (e.g) the LP fuel valve is not opened/closed by ECU/EIU but direcly by the switch? EIU/ECU just knows the position of the switch/valve?

But what about the engine selector to START/IGN? It will open 1 PFCV. It direcly opens it? It doesn't transit threw the EIU which sends a signal to the pack controller? EIU, again, just knows the position of PFCV?

So when does the second PFCV close (of course, the pilot has pushed the master switch)?
Isn't it the pack controller?

EIU basically helps the ECU.

Thanks

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