Correction Injectors

[pitty]

Guys I have to congratulate you for the explanations super techniques that dates. I, in my ignorance I agree about the speech that the ecu is able to adapt the injection if c'? a injector or two etc etc do not work. ? it is thanks to this that then, Cione said, the diagnosis can give us some answers on any injector that does not work!

[munro]

based on engine speed,accelerator pedal (for the first two mentioned, ask yourself why after a certain number of engine revolutions can no longer calculate the correction) pressure pipe,injection time(msec indicates and calculates how much time is remaining in the injector open during the phases of injections per cylinder) from here understands that the time of opening more pressure flute(on the basis of the pressure indicates how much diesel ec in the flute and so far as I inject in the early stages of injection indicated in msec etc.
I will not dwell otherwise ce to write so much
ps the explanation and a little home-made, but much more' technical

guys s me? that we do not understand....I speak of the cylinders and the engine,and mechanical parts, not the injectors....the user washer,but I have also read of others who say a similar thing, says that if c'? a cylinder or its piston, which is not v? the ecu sees this...even if it has the injectors perfect.....so my question is ?:having a perfect engine with 4 injectors perfect st? at 1000 rpm, and having another engine with 1-2 or 4 pistons or cylinders, nono go to, but with the same 4 injectors perfect st? always turning at 1000 rpm..the ecu,which I remember not ? a thinking creature with a life of their own with perhaps as much of a degree in electronics, but a simple little box with a p? tin,plastic, and silicon,as farebb? understand according to some of you, such as cylinders,repeat the cylinders then the mechanical parts,and which are not??? rispiegatemelo why? this thing to me ? the all-new...

[progresso]

parameter air mass, it does not tell you anything? in comparison with diesel fuel, the ecu understands on which the cylinder is in ploblema

http://www.professionalchiptuning.ne...2355&noquote=1

[pitty]

You, in fact. On the basis of the quantity? of air and diesel fuel compared to surely you can understand what ? the cylinder that should not be.

[alfetta80]

I read it just now alfetta80...meanwhile, I thank you for having clarified precisely what it is about...more specifically to that unit? d measure we are talking about...even if I have to say that the speech mg and more attributable to go vw tdi pd while for the common rail would be better to speak of millimeters cubic..***** unue, this correction that the ecu f? even "hearing" if a cylinder more or less compression it seems to me veeery strange...I think that the engine and its cylinders,one or more, they can also be completely seized,gone,macciulati,etc,etc...but the ecu knows that for a given transient load on the engine,rpm, and whatever else is always the same amount? the injection has to give...the speech correction according to me ? more than a calibration that the ecu f? depending on the code ina injector to a question of the balancing of the cylinders in order to have an engine the more regular as possible...and I read that the ec is able to manage this calibration, the end say,up to a maximum of 30% of the wear and tear of the injectors...everything else, according to my humble opinion are talking to the wind....

hello munro does not have to thank me, it seems to me the minimum after all the help you have given me.!!!!!!
anyway, I confirm to you when you said on the common rail are millimeters cubic.,anyway, let's go back to the fixes,the latter is done by the ecu based on the sensor turns the most technically called angular acceleration of the flywheel if you connect a oscilloscope on the sensor turns, you will notice in the phase of the burst signal will increase significantly, while if the outbreak is not the case, the signal will remain constant, and from them is that the ecu will feel' of the failure or loss of hits and here comes out the correction that is why I say to you that you may have an injector in perfect condition but may have a low compression maybe for a piston laundry or incrippato etc etc, the ecu does not know what happened but knows only that the cylinder the signal and constant, and there is no angular acceleration and then tries to conpensare aumentanto the flow rate of the fuel in that cylinder...or an example happened just last week on a mercedes 320 cdi at least everything was ok while accelerating lacked a cylinder ,seeing the fixes in diagnosis at a minimum, it was noticed that the cylinders were all close to zero while accelerating is noted that the correction of the fourth cylinder saliva sharply to +5.00 mm cubic i.e. the maximum of the correction,in this case, by accelerating the flow of diesel fuel was not sufficient to cause the injector seized and the ecu knowing that in that cylinder there was something wrong trying to conpensare to the maximum.....

[rondella72]

hello munro does not have to thank me, it seems to me the minimum after all the help you have given me.!!!!!!
anyway, I confirm to you when you said on the common rail are millimeters cubic.,anyway, let's go back to the fixes,the latter is done by the ecu based on the sensor turns the most technically called angular acceleration of the flywheel if you connect a oscilloscope on the sensor turns, you will notice in the phase of the burst signal will increase significantly, while if the outbreak is not the case, the signal will remain constant, and from them is that the ecu will feel' of the failure or loss of hits and here comes out the correction that is why I say to you that you may have an injector in perfect condition but may have a low compression maybe for a piston laundry or incrippato etc etc, the ecu does not know what happened but knows only that the cylinder the signal and constant, and there is no angular acceleration and then tries to conpensare aumentanto the flow rate of the fuel in that cylinder...or an example happened just last week on a mercedes 320 cdi at least everything was ok while accelerating lacked a cylinder ,seeing the fixes in diagnosis at a minimum, it was noticed that the cylinders were all close to zero while accelerating is noted that the correction of the fourth cylinder saliva sharply to +5.00 mm cubic i.e. the maximum of the correction,in this case, by accelerating the flow of diesel fuel was not sufficient to cause the injector seized and the ecu knowing that in that cylinder there was something wrong trying to conpensare to the maximum.....

brilliant, great illumination you have also delved into my explanation relative to the sensor

[nasone147]

guys but the fixes should be checked cold or hot??there are too many conflicting opinions!!I cold I the 2iniettore that corrects to + / - 2.74 and the 4 injector compensates by -2.02,but as they warm up a p? everything is average!!anyway, I have all the symptoms of the injectors ko..vibration,cold,departures long,fumosit?..!

[nasone147]

Any advice?

[cinqueturbo]

Do not call me back.. but I want to say my experience on the 147 1,9 150 hp of my coined,
in practice, the machine is cold-started the whole phase-shifted and was rampant fear,
I told him and then taking it to our having to revise the injectors, why? there was a fix that went from -7 to +7..
drive semi new with 70,000 counts, but certainly in the double..
however, the car smoked well as from fear, and smelled to die for..
one Sunday he took off the EGR from the map, believe me fix -1+1 engine raised and linear..
to you the word.

[mikyrace82]

in the tdi c? a procedure that should be performed to realign the injectors....talking about simple...you adjust the fortresses of the injectors...you bring the olive oil to the cams at tdc is screwed up to feel the end without forcing it, and you unscrew to 270gradi if I remember correctly (tdi 130o150).