edc16u1 - limitation diesel and turbo more than the threshold set by the ecu

[Quattro]

the maps lambda in the diesel engine does not smagriscono as in gasoline, is used as a limiter fumosit? so if you understand what contain the tables you can increase the flow rate of the diesel, of course, adapting all the rest of lambda 1 in the diesel is equivalent to having an afr of 14.5 for this the user tells you to decrement the maps

but I don't know what to get the maps lamda with the limitation...if you can be more? precise
thanks

[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.

Are you telling me that ? a problem of stoichiometric? If the mixture ? lean I can understand that it can go into protection. But in this case we have a miscelta fat, and then I don't understand what you mean. Can you explain to me why? of this your reasoning?

[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 logging?

[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 logging?

I did not do the log data . I can tell you that the damage affecting the 1:58 bar overpressure and limp it 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: an overboost and IQ limiter.
For an overboost you need to modify the turbo and vnt maps.
For IQ limitation you need to modify the lambda maps.

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

[Quattro]

Hello

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

Try to open vnt vhen an 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: an overboost and IQ limiter.
For an overboost you need to modify the turbo and vnt maps.
For IQ limitation you need to modify the lambda maps.

Try to open vnt vhen an 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 an overboost ... because the pressure rises because of the same maps iq .

[biela]

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

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

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