air mass calculated?

hi,
what does "air mass calculated" mean in v@g-com?
My approach is as follows.
Based on several measurements with 6 different LMS devices, I observed a maximum air flow rate of 455 mg/r (actual) in one defective device.
the corresponding (calculated) value is 850 mg/r.
The vehicle is completely powerless when accelerating.
so sollte der Wert "calculated" ein Sollwert sein.
is that correct?

Best regards, Leo

Yep
calculated - also, the value that the MSTG has calculated as the target.

Hi Rudi

@rudi: Thank you!

My target values are always below the actual values.
My maximum charging pressure is 1.55 bar absolute.
only at excessive overpressure (1.8 bar absolute) does the air mass reach slightly over 850 mg/r.
is therefore the max air mass also strongly dependent on the loading pressure?
and is the air mass always somewhat lower with increasing speed, as the air passage here hinders?
Should a slight increase in the loading pressure also result in higher performance, as this would ensure that the air mass is always at least 850 mg/r?

Best regards, Leo

leo_b wrote:

1) My current values are always below the target value. 2) Only at excessive overpressure (1.8 bar absolute) does the air mass reach slightly over 850 mg/r. is therefore the max air mass also strongly dependent on the loading pressure? 3) should also result in higher performance if a slight increase in the loading pressure is achieved, as this ensures that the air mass is always at least 850 mg/r?

1) Then something is wrong. Troubleshooting

2) Yes, that's exactly how it is with mine too. Here's the translation:

I explain it like this: If the turbo demands a certain value, the LMM also measures that value.

3) Only where the soot restriction applies.

hi,
I had some fun and the values from the thread: /viewtopic.php?p=84423#84423
graphically prepared.
From this, one can tend to recognize a certain dependence.
my conclusion:
low load pressure = low air mass
high load capacity = high air mass

Therefore, my air mass should also match the loading pressure?!

Best regards, Leo

leo_b wrote:

my conclusion: low load pressure = low air mass high load capacity = high air mass Therefore, my air mass should also match the loading pressure?!

As a general direction: yes.

However, of course, the displacement per cylinder (!) is the main factor besides the LD.
Furthermore, the valve timing and the exhaust backpressure (high backpressure -> lower gas exchange = lower air mass).

Everything, of course, is for air passages without holes and an intact LMM... if it's defective, it's just measuring garbage.