edc16u1 - limitazione gasolio e turbo oltre la soglia impostata dall'ecu

[Quattro]

le mappe lambda nel motore diesel non smagriscono come nel benzina, sono usate come limitatore di fumosit? quindi se capisce cosa contengono le tabelle puoi aumentare la portata di gasolio ovviamente adeguando tutto il resto lambda 1 nel diesel equivale ad avere un afr di 14,5 per questo l'utente ti dice di decrementare le mappe

ma non capisco cosa c'entrano le mappe lamda con la limitazione...se puoi essere pi? preciso
grazie

[biela]

At 4000 rpm and 1000 mg/hub of MAF you can see 1.589 value of lambda.

1.589x14.5 is an AFR of 23.0405.

1000/23.0405=43.402 mg/inj of fuel allowed.

[Quattro]

At 4000 rpm and 1000 mg/hub of MAF you can see 1.589 value of lambda.

1.589x14.5 is an AFR of 23.0405.

1000/23.0405=43.402 mg/inj of fuel allowed.

Mi stai dicendo che ? un problema di rapporto stechiometrico? Se la miscela ? magra posso capire che possa andare in protezione. Ma in questo caso abbiamo una miscelta grassa e quindi non capisco cosa vuoi dire. Puoi spiegarmi il perch? di questo tuo ragionamento?

[biela]

There is no problem with stoichiometric ratio.
I was telling how to calculate fuel limitation.
Diesel engines run lean. For example 23.0405 AFR, this is lean.
If you want more fuel with the same air mass, then you need to run richer.
How much air mass is your engine running at 4000 rpm?
Have you done any datalogging?

[Quattro]

There is no problem with stoichiometric ratio.
I was telling how to calculate fuel limitation.
Diesel engines run lean. For example 23.0405 AFR, this is lean.
If you want more fuel with the same air mass, then you need to run richer.
How much air mass is your engine running at 4000 rpm?
Have you done any datalogging?

I did not do the log data . I can tell you that the damage affecting the 1:58 bar overpressure and limp home!...
and now I can not read the values ​​because the car is no longer in my hands
how did you solve it?

[biela]

Hello

I am understanding that you have 2 problems: Overboost and IQ limiter.
For overboost you need to modify turbo and vnt maps.
For IQ limitation you need to modify lambda maps.

Try to open vnt vhen overboost. And do not request too much boost at low rpm.

[Quattro]

Hello

I am understanding that you have 2 problems: Overboost and IQ limiter.
For overboost you need to modify turbo and vnt maps.
For IQ limitation you need to modify lambda maps.

Try to open vnt vhen overboost. And do not request too much boost at low rpm.

maps turbo are ok . How do I change the lamda to prevent the recovery data from maps iq ?

[megamind]

Hello

I am understanding that you have 2 problems: Overboost and IQ limiter.
For overboost you need to modify turbo and vnt maps.
For IQ limitation you need to modify lambda maps.

Try to open vnt vhen overboost. And do not request too much boost at low rpm.

For opening vnt must decrease the value?

[Quattro]

For opening vnt must decrease the value?

what criteria should be used to decrease the lamda according to iq ?
For maps turbo , I put the original values ​​and goes into overboost ... because the pressure rises because of the same maps iq .

[biela]

Yes, For opening vnt you must decrease the value.
If you have overboost with original file, then could be stuck vanes.

For example, AFR target of 17:1 without smoke.
If you put 2100 mbar at 4000 rpm, you are near 915 mg/hub of air.
915/17=53,8 mg IQ

You change lambda from 1,589 to 1,172 to allow that IQ.