Map editing lambda diesel, who knows more?

[mirks]

Hello guys.
I wanted to learn a bit more about these maps and how to change them.

most of the get up, the more decreases the amount? of diesel fuel (raising the ratio stechiomnetrico) ? correct?
while if the lower increase in the quantity? mg injected?

also if I change already the opening times and the pressure of the turbo, however, has the sense moddarle?
or if there are maps lambda and better change those and leave the temp injection and turbo?

Many thanks to all those who participate and I hope that with this post, you can do more clarity on these maps.

[checchitotiralaleva]

If you are referring to the calibration of the map smoke (or lambda minimum bottom) we were talking about it here too:
https://www.professionalchiptuning.net/showthread.php?5409-info-su-edc16c8/page3



I don't toccherei never map the injectors (map opening times) - ? how to trick the ecu... Who the calibra bench measures mm3/stroke injected for each ET to vary the P_Rail.
This same map is valid for both the pilot injections and post that to the MAIN.

In terms of the response in transient I think it's much more? the correct (and profitable) to retouch rather the map smoke.

With regard to the pressure of the boost, and remember that you gauges a target in steady-state, transient, no turbine can? never give you the boost immediately. For VGT control systems or WG with valvoline controlled in a PWM you may upset the control parameters, but you always have to wait for the physical... a time that the control will close the vane (VGT) or the plate WG have to wait for the boost. The times depend on the size of the turbo-compressor...

Depending on the load instead of the introduction varies almost instantly - if you relax your map smoke you can get many more? benefits - at the expense of sfumazzate...

[mirks]

so according to you, putting the map of the injection times and turbo gold, but raising the map correction (boost) and lowering the map lambda (afr) I'd get the same result by modifying the map and injection map turbo?

[SandroMarciano]

so according to you, putting the map of the injection times and turbo gold, but raising the map correction (boost) and lowering the map lambda (afr) I'd get the same result by modifying the map and injection map turbo?

In the transient ? the same, but in the absolute, once the turbo ? load do you have other limiters that stop the diesel maximum injectable.

P.S. congratulations to checchitotiralaleva for the excellent posting!!

[checchitotiralaleva]

so according to you, putting the map of the injection times and turbo gold, but raising the map correction (boost) and lowering the map lambda (afr) I'd get the same result by modifying the map and injection map turbo?

According to me a proper work could be:
- Leave the map the injectors;
- Raise the fixes boost in transient ? risk an overboost at the end of the transient ? turbo overspeed;
- Lower the lambda limit of the map smoke in order not to restrict too much diesel fuel in the transitional (waiting for the boost - fixes boost in transient are always TARGET to chase with the boost control ? for example, by varying the position of the VANE of the turbo VGT)  SFUMAZZATE;
- Turn off the?EGR;
- Increase the map of the boost in the areas where the manoeuvres in the transitional end ? risk to get close to the limit of the maximum rpm ? since the n? rpm turbo depends on the compression ratio that you want to get (beta=P Absolute Valley Compressor/P Absolute Mount the compressor), to increase the boost, but not to get too high with the beta (with rpm), this change should be accompanied from?the adoption of a filter dell?air ir? permeable (it would be a good idea to clean also?the inside of the volute compressor from the lacquering of oil recovery efficiency);
- Increase the curve that limits the maximum introduction in the steady state.
- Connect with slopes greater map of the P_Rail without exceeding with respect to the maximum injection pressure calibrated. Needless to tap the low-speed low loads (risk of combustion noise ? beat). If you want to exceed in a bit with respect to the maximum P_Rail calibrated in the map, you should increase also the maps of the restriction rail Pressure (according to me it's not worth it).

Thanks a lot SandroMarciano! I am very pleased!
Hello everyone!!!!!

[mirks]

whereas once it was in the steady state and no more? in the transitional, if you do not use the lambda, it uses the injection times as you tell him to inject more fuel?
could you give a practical example on the lambda of this map golf 6 GTD edc17
find out driver address 1F992E [AFR] and I think 1F90FA smoke limiter [BAR]

file ori deleted

[leandro89]

whereas once it was in the steady state and no more? in the transitional, if you do not use the lambda, it uses the injection times as you tell him to inject more fuel?
could you give a practical example on the lambda of this map golf 6 GTD edc17
find out driver address 1F992E [AFR] and I think 1F90FA smoke limiter [BAR]

file ori deleted

the file ori should be posted in the database if there were no gi?, and in the discussion it must be pasted the link with the number of posts

[checchitotiralaleva]

Hello Mirks,
unfortunately I can not tell you the names do not BOSCH... as directly experienced the curve introduction the limit for me (mg/hub function of the rounds) is called EngPrt_qLim_CUR (EDC17C49). This defines the maximum introduction of fuel permitted for each scheme in the steady state.

Of course ? the need to increase the introduction within the maximum introduction expressed in the map torque to quantity, and in the map injectors (opening times), if you exceed, you need to extrapolate and recalibrate the areas with break points changed the maps referred to above.

Then ? also need to raise the torque limiters, even if on our experimental dataset I have always seen sblindati to 1000Nm (on the application 500Nm max).

[mirks]

Hello watch *******h I from the first map as lambda,
as you would?
afr around 1050 1030, while the second map comes on top of the 1300.

also where can I find the map to put on weight in the phase non-transitory?

[franco75]

Checchitotiralaleva, you have been very clear but I could not understand this step


According to me a proper work could be:

- Increase the map of the boost in the areas in which the manoeuvres in the transitional end


could you explain better how to locate the conclusion of a transient

[checchitotiralaleva]

Mirks sorry but I still can't download attachments. I seem a bit strange, the absolute values contained in these maps? The order of magnitude of the lambda minimum of the map smoke to which they are accustomed ? 1,05 - 1,3... maybe here, it is expressed in a different way?

I don't know how to find the curve of introduction limitations with the software used here (unfortunately I don't know them). For me, the curve of introduction limit ? EngPrt_qLim_CUR.
I would be interested also I figure out how to be BOSCH and software that you can use it privately... Certainly on this forum, you could find the answer of someone who knows a lot more?!

Franco75, one idea might be to register with a diagnostic tool rpm and the introduction of some maneuvers typical that you do with your machine and see the points engine that you reach after the transient (when you stabilize rpm and introduction).
Starting to edit those points ritrovandoli in the map of the boost, joining the performance of the same in all directions.