AJM Torque Curve and Power Delivery

Hello fellow forum users,

Does my AJM now sometimes accelerate without being hindered by the sluggish VTG?
Then I can focus more specifically on the ventilation behavior.

I'm still puzzled by moderately strong, yet noticeable, irregularities.
im Beschleunigungsverhalten ( wellenförmige Beschleunigung ), die ich früher auf Ladedruckschwankungen geschoben habe. SYou are.
but it's still noticeable, especially when the boost pressure control system is working well.

Around 3200 RPM, and even more noticeably at 4000 RPM, the engine offers a significantly better power delivery compared to the range in between.
The peak acceleration values roughly follow the logged curve.
Torque curves, and can be objectively observed when viewed alongside a...
It accelerated alongside a similarly powerful car and, at those same peak speeds, it pulled ahead of the other car.

Here's an example of an MWB 08, 10 log with relatively good boost pressure control, where the...
The amount of fuel injected depends solely on the engine speed curve.

http://members.aon.at/835935/050514/08-10.gif

EDIT: There's still a missing MWB 09 log for the actually released quantities.
http://members.aon.at/835935/050514/LOG-01-009-xxx-xxx.CSV
EDIT End

From forum threads and technical articles, I've learned that, assuming the sensors and motor are completely intact...
The torque curve, starting around 2000 RPM and going upwards, and full throttle, represent the actual 'driving characteristics.'

If, however, the developers can assume that the average driver spends most of their full-throttle time
It's accelerating along that path, so why did they program in two such 'humps' (arrows in the image)?

It can't be due to the fuel injection being reduced as the engine approaches its maximum RPM, because at around 3700 RPM, the actual amount of fuel injected is even less than it is at 4000 RPM.

What do you think, esteemed experts?
Is that:

a) Loveless, mass-produced programming?

b) Is the exhaust or consumption data being artificially manipulated by the manufacturer to meet certain (EU) standards?

c) Have I overlooked any other issues that directly affect the torque characteristic curve?

best regards
herwig

herwigw wrote:

Around 3200 RPM and more noticeably at 4000 RPM, there's a significantly better power delivery than in between. The peak acceleration values roughly follow the logged curve. Torque curves, and can be objectively observed when viewed alongside a... It accelerated alongside a similarly powerful car and, at those same peak speeds, it performs better than the other car.

I have a rotary-type KF (Karl Fischer) titrator for an AJM (MSG 019 CJ). It actually seems to have a slightly wavy pattern, but I don't know why.

By the way, the lower line represents the performance at an external air pressure of approximately 700 millibars (-> suitable for high-altitude driving).

It offers noticeably better acceleration around 3200 RPM and even more so at 4000 RPM, compared to the range in between.
The peak acceleration values roughly follow the logged curve.
Torque curves, and can be objectively observed when viewed alongside a...
It accelerated alongside a similarly powerful car and, at those same peak speeds, it performs better than the other car.
I have a rotary-type KF (Karl Fischer) titrator for an AJM (MSG 019 CJ). It actually seems to have a slightly wavy pattern, but I don't know why.

The lower line, by the way, represents the performance at an outside air pressure of approximately 700 millibars (-> suitable for high-altitude driving).

Thank you, Ulf!

That's a completely new approach!
Perhaps the control unit is detecting altitude because the vehicle is registered in Austria, but there are also Austrians like me who live in flat areas .

As far as I can remember, the 'External Pressure - MBW 10' setting, under 'Atmospheric Pressure,' always displays the actual external pressure accurately.

Can you possibly give me a tip about where (a magic wand or a crystal ball ) is, so that I can...
Could the engine control unit still be tested?

fg
herwig

herwigw wrote:

Could you possibly give me a tip on where (whether it's through a multimeter or a crystal ball ) I could further investigate the engine control unit?

No... but I didn't like the "Zahlenklops" (number dumplings) in the link you sent.
If you process it further, maybe something can be identified.

P.S.: Ich kann nicht ausschließen, daß mein AJM-File (aus unbekannter Quelle) schon ein Doofi-Tuning erfahren haben könnte und das Drehmo daher so wellig ist . . . aber die Höhe der Werte sieht eher nach Serie aus.

No... but I didn't like the 'Zahlenklops' (number dumplings) in the link you sent.
If you process it further, maybe something can be identified.



Sure: Please provide the above log as a Screenshot from VAG-Scope.

http://members.aon.at/835935/050514/09.gif

herwigw wrote:

The following log as a Screenshot from VAG-Scope

.
Unfortunately, this doesn't provide me with any new information, so I can't help you further at the moment.

'Thank you anyway!'