Ecu

[sergejv]

Small questions regarding ECU.
1. If in fly ECU is start inoperative the Engine continue to work or automatically shut itself down?
2. If Alternator fails to generate the required electrical power, the ECU will switch to Alternator of other Engine, to Bat 28V DC or to which bus?
Thanks,
Sergey

[dodiano]

What the **** is the ECU??

[Joe Cygan]

What the **** is the ECU??

electronic control unit

[dodiano]

Electronic Control Unit I don´t think we have that on the Bus not on the IAE engines is he talking about the EEC maybe? Maybe you could answer cause I have no Idea man!

Roberto

[Joe Cygan]

Electronic Control Unit I don´t think we have that on the Bus not on the IAE engines is he talking about the EEC maybe? Maybe you could answer cause I have no Idea man!

Roberto

It’s been about fourteen years since I worked on an Airbus 319/320 w/V2500 Robertio but I’m thinking they are the same things(ECU/EEC).

As far as the question I’m taking a stab in the dark here but if ECU/EEC failed on engine start wouldn’t the FADEC sense failure and shut down the engine while cranking the starter for another 30sec or so?

Also, the V2500 has two alternators per engines, FADEC alt 1 and FADEC alt 2. Doesn’t FADEC control this function upon failure?

[sergejv]

Dodiano, yes I speak about CFM engines.
ECU (electronic or engines control unit) is the heart of FADEC. I think ECU=EEC and is the same and do the same.
ECU on ground is powered by 28V DC, and after engine start by Eng. alternator (115V). After alternator start faulty in fly it switch back to Bat or to another Eng. alternator or ... ?
I know exactly if EIU (this is interface between ECU/EEC and pb.s)start faulty the Engines not shutdown in fly but what about ECU/EEC.

[dodiano]

Yeah I thought so! EEC is on the IAE and ECU on the other engine I think! I still have no idea what youa re talking about buddy! But what I do know if we loose one generator we always have the second one! Now as Joe says if the EEC fails the FADEC will detect it and switch to the second channel if I´m not wrong probably will trigger an Ecam as a warning... Now we have diferent busses on the Airbus ( I realy hate the electrical system) but to make it short if one generator fails, one TR fails or an AC bus fails the network automatically switches to the backup or the second bus .. Now remember Batteries are mostly for starting the APU and stuff like that and powering up and as a backup but in flight our main source for generating electricity are the Generators, 3 on the plane basically! And a 4th one for backup the RAT! It is very unlikelly you will have a complete electrical emergency configuration which why the way we practice on our sim sessions and even there the idea is to reset computers and try to get one generator running!

Hope it helps!

Regards,

Roberto

[sergejv]

I still have no idea what youa re talking about buddy!
I am talking about full lose ECU for one engine. I think for this situation the engine will be switched off but I am not assured. Without ECU/EEC the engine is only big metal.
In AMM I find only this:
ECU Failures and Redundancy
- The ECU uses identical software in each channel. Each channel
has its own power supply, processor, programmed memory and
input/ output functions,
- Each channel normally uses its own input signals, but can also use
input signals from the other channel if it recognizes faulty or
suspect inputs,
- An output fault in one channel causes switchover to control from
the other channel,
- In the event of faults in both channels a pre-determined hierarchy
decides which channel is more capable of control,
- In the event of loss of both channels, or loss of electrical power, the
systems are designed to go to the fail-safe positions.

[Trevor Hale]

Serge, You must have an amazing Sim. I would love to see pictures. If you are able to model you simulator down to the point where your working with logic on the ECU units, I am very impressed. Do you think you could post a couple pictures of your setup?

I have 3 Engine computers on the Falcon 900, and when you turn them off in the real aircraft you get differences in the N1, and N2 % (shudders) on all three engines. The computers are suposed to keep them running smooth Flightsim and Project magenta can't model these features unfortunately, but I am at a loss on how I could possibly model these functions. What your talking about in your setup would do that for me. So I am eager to see where your at with this. Where are you programming this logic? Are you able to share this information please?

Thanks,

And again, could we see some pictures of your ECU units that your working with. I am very excited.
Trev

[dodiano]

Sergejv,

Really this won´t help you on your quest for your sim! I really don´t know this stuff if something fails in the air the ECAM will tell me and also he will tell me what to do as well as the FCOM´s for the emergency... I think is very difficult we loose the ECU´s or EEC´s since we have 2 channels for it but this stuff is really not relevant I am here to answer questions about the handling of the Bus, software or stuff like that but these deep questions I´m sorry man is not my thing! I know the systems in general and what I need to know that will help me trouble shoot and understand what is happening in hte Air but this is not something I know as from memory nor by heart.

Really sorry.

Regards,

Roberto

[sergejv]

Official answer:
In the event of full loss of ECU/EEC, or loss of electrical power, the systems go to the fail-safe positions and all important parameters will be managed by Hydraulic system.

[Trevor Hale]

Hey Serje,

Thanks so much for researching the answer on this. Please would you provide the reference where you found this information?

It is very important that other members do not get the wrong idea here. Roberto is a Real Pilot on a Real Airbus, not to mention a value to our community, and as he stated in his post the information down to how many pounds of torque are each bolt fastened on the aircraft is not required knowledge of a real pilot.

Roberto has helped many of us with actual measurements, actual system information, and not to mention his experiences. Without cost, or renumeration.

It is important that we are careful with the methods that we present information in these forums, Remember, when you type short posts, people can judge what your trying to say in an inappropriate manor.

I am sure you don't mean anything snide about your comment, I just want you to be aware that it could be perceived as throwing the answer into someone's face. I Know this is not what you meant, and I am sure you can understand how it could be perceived by your posting.

Thanks for your post, and I am sure you will think more carefully next time when you posting such valuable information.

Best regards,

Trev

[sergejv]

Thanks so much for researching the answer on this. Please would you provide the reference where you found this information?

This information from Technical Instructor from Istanbul.


how many pounds of torque are each bolt fastened on the aircraft is not required knowledge of a real pilot.
Trev
About bolt Yes, but not about Electronic engine control unit, because it's very important component which control and monitor many aircraft systems.

Sorry

[dodiano]

Who says the EEC is so important ?? Your technical Instructor then why don´t you ask all this astronaut questions to him?? Really man ... The day I loose my EEC the Ecam will tell me what to do and that is the same day my dog pissed on my shoes, a Bird crapped on my uniform and The EEC failed all in the same day... Hence ask your instructor if the Stupid engine starts doing funny things then why don´t he shuts it down and fly with the other to the nearest suitable alternate... Even your Technical Instructor should know that by now dude... Land the plane and avoid been watched on the Evening news at CNN!! Really if you already know the answers no need to be quoting it nor be judging my Pilot Skills and knowledge with Question not even a Line Check Airmen will ask... Really man I´m here cause I love this Forum it is fun and I want to help others with my real life experience in whatever I can...

Roberto

[Trevor Hale]

LMAO..... Well I have never experienced all those events, But I could tell you that if all that happened to me and I lost the ECU, maybe I would buy a lottery ticket. What you think Roberto?

[sergejv]

Nobody don't worry! I am only simmer and want know all about Airbus and their systems and maybe sometimes have very silly questions. If I can’t find answer I ask at forum or my friends who work at Airbus or serve it in real life.
Excuse me for inconvenience.

[Michael Carter]

It might be of some help if you had access to maintenance manuals, the POH, and whatever else Airbus and the airlines use to maintain their fleets.

This might be tough with an aircraft still in service what with terrorist on the loose and all, but it might be worth looking in to.

Airbus manuals frequently are listed on e-bay.

I know several retired 727 captains, but I doubt that many know as much as I do about how their aircraft was built, nor is that a requirement to captain a 727. That job is for the maintenance folks and sim builders.

Being a sim builder makes you just that. A builder. Not every real-life aircraft commander is going to know every detail about the aircraft they fly. But many builders know plenty about the aircraft they are building. On a support forum I frequent there are a few real world pilots for the 727. I got into a conversation with a flight engineer who asked me who I was flying the 727 for. I told the guy I wasn't rated in any turbo-jet aircraft.

He told me I should be...but I'm sure he was kidding. :)

I fly bug smashers, but that doesn't mean I can overhaul a Lycoming air-cooled four cylinder opposed engine or know what the rigging is supposed to be for the flight controls.

[dodiano]

No man no inconvinience at all!

Regards,

Roberto

[warvet]

I'm LMFAO Serge are you building a sim or a real Airbus :) I have been building my A340 for a long time now as well as took an Airbus familiarization training program and Instrument familiarization course and never seen a need for ECU/EEC Fadec , Rat or even IOU lol FS just can not cope with that level of stuff. I too would really love to see your sim Serge it must be un believable if you have educated yourself and created such an intense level of realism my hat goes off to ya. Roberto Im srry to hear about your uniform DAMN BIRDS! :)
Basic advise Sergei enjoy the joy of flight and basic sim building and leave the ECU Fadec and bolt torques to the Aviation mechanics :)JMO

Tim
A340

[sergejv]

I'm LMFAO Serge are you building a sim or a real Airbus?
Hi Tim!
I'am only Fun and fly by Igfly/PSS-A320 in FS2004.
B.R
Sergey