Question about measurement block 4 in VAG-COM

In measurement block 4, in addition to the engine speed, the actual and target injection timing values (IST and SOLL) are displayed.
How realistic is this measurement?
If the actual value always matches the target value, can it be concluded that the injection timing is always correct?
I assume the signal from the needle lift generator is being analyzed there, is that correct?
Der SOLL-Wert wäre dann der Wert aus dem Kennfeld im MSG, der IST-Wert derjenige vom Nadelhubgeber. Correct?

Regards,
Jens.

Yep, that's right.

But only if it is actually injected.

As far as I know, when the throttle is disengaged, the last actual value remains unchanged and may no longer correspond to the desired value. Therefore, logging data from channel 004 only makes sense if you also log data from channel 002 (pedal position) and then only consider the values where you were accelerating.

Okay, please provide the German text you would like me to translate into English. I will only provide the translation.

dieselmartin wrote:

As far as I know, when the throttle is disengaged, the last actual value remains unchanged and may no longer correspond to the desired value. Therefore, logging data from channel 004 only makes sense if you also log data from channel 002 (pedal position) and then only consider the values where you were accelerating.

Okay, thank you.
Unfortunately, my old software only allows the display of individual measurement data blocks.
I would ideally like to simultaneously log the pedal position, boost pressure (actual vs. target), and injection timing (actual vs. target), but unfortunately, that's not possible.
Measurement block 0 would be suitable for this purpose, but unfortunately, it is not displayed graphically.

Well, let's see how I can solve this.

Regards,
Jens.

Quote:

When the drive is switched off, the last actual value remains unchanged, as far as I know.

So far, I've always observed that when the thrust is disengaged, the actual value goes to 0° vOT.
The TV will likely increase its tax rate to somewhere between 30% and 35%, probably to fund future investments.

dieselmartin wrote:

Daher macht ein Log von 004 nur Sinn, wenn du 002 (Pedalweg) auch loggst und dann nur die Werte betrachtest, wo du Gas gegeben hast.

It's not that dramatic, in my opinion.
You can also identify surge phases in the "MWB4 only" configuration by a completely constant actual value.
As soon as the regulation is adjusted, the actual line in the diagram becomes slightly shaky.
Therefore, where there is instability, the deviation from the norm should not be too significant.