LD Solenoid Valve: Logs & Questions on Duty Cycle

Hello!

Vehicle AFN in a Volkswagen Golf 3, 126,000 km.

For quite some time, I've been trying to address the sluggish turbo boost build-up in my AFN.
I'm starting to get a clue. I suspect it's the adjusting rod from the pressure sensor.
The charger is not optimally configured. Please take a look at the following:
Measurement logs.

Outside temperature: approximately 15 degrees.
Excerpt from measurement data blocks 8 and 11.

Rotation = Speed (or RPM)
Fawu = Driver Preference.
Dreb = Torque limiting.
Rußb = Soot limit.
Target pressure = Solldruck.
IsDr = Istdruck.
Duty cycle of the magnetic valve, boost pressure.

"Die Sonne scheint hell, und die Vögel zwitschern fröhlich. Es ist ein wunderschöner Tag, um spazieren zu gehen oder ein Picknick im Park zu machen. Viele Menschen genießen das gute Wetter und verbringen Zeit im Freien."

Log(1): Übliche Vollgasbeschleunigung im 3. Gait.
subsequent thrust phase (this section of the log is heavily abbreviated).

Turn Fawu Dreb Rußb ShouldBe IsDr Taste

1260 10.0 37.0 25.8 0928.2 0928.2 42.2
1365 39.4 37.6 26.8 1377.0 0948.6 25.1
1533 45.2 38.6 29.6 1713.6 1060.8 29.9
1743 45.6 39.8 34.2 1795.2 1213.8 35.1
1995 45.2 42.0 39.4 1907.4 1458.6 38.3
2268 44.8 41.8 41.0 1948.2 1805.4 56.6
2541 44.4 41.4 39.4 1948.2 1703.4 47.0
2793 44.0 41.0 40.4 1948.2 1764.6 49.4
3066 43.6 40.6 40.4 1948.2 1887.0 50.2
3318 43.4 40.4 40.6 1948.2 1887.0 49.4
3570 43.2 39.8 40.6 1948.2 1907.4 49.8
3801 43.0 39.4 40.0 1948.2 1927.8 50.2
4011 42.8 38.4 39.0 1948.2 1938.0 50.2
4221 42.6 38.2 38.6 1927.8 1927.8 51.0
4389 40.2 34.6 35.0 1897.2 1907.4 51.8
4305 00.0 36.6 11.8 1040.4 1509.6 59.8
3339 00.0 40.2 14.2 0989.4 0918.0 59.8
2898 00.0 41.0 16.6 0969.0 0918.0 59.0
2520 00.0 41.4 18.4 0948.6 0928.2 57.0
2226 00.0 42.0 19.6 0928.2 0928.2 54.6
1995 00.0 42.0 21.0 0928.2 0928.2 50.2
1785 00.0 40.4 22.6 0928.2 0938.4 47.4
1554 00.0 38.8 25.0 0928.2 0928.2 45.8

Question (1):
Shouldn't the duty cycle be able to go much higher?

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Log(2): A relatively short, full-throttle burst in 5th gear.

Turn Fawu Dreb Rußb ShouldBe IsDr Taste

2142 13.4 42.0 20.6 1101.6 1060.8 43.0
2142 13.0 42.0 20.6 1111.8 1060.8 44.6
2163 12.6 42.0 20.2 1101.6 1060.8 45.4
2184 44.8 42.0 29.2 1948.2 1060.8 42.6
2226 44.8 42.0 35.8 1948.2 1295.4 44.2
2289 44.8 41.8 38.8 1948.2 1519.8 45.0
2373 44.6 41.6 40.0 1948.2 1683.0 45.8
2436 44.6 41.6 40.4 1948.2 1774.8 47.0
2415 00.0 41.6 21.6 0948.6 1530.0 55.8
2373 00.0 41.6 19.6 0938.4 1009.8 55.8

Question (2):
Why is the reaction rate proportional to the duty cycle at the full throttle point?
so small compared to Log 1?

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During the following test (acceleration from a standstill after prolonged full throttle in 5th gear),...
When transitioning to full power, the duty cycle increases to 94%.

Log(3): Full throttle, 5th gear, and boost engaged.

Turn Fawu Dreb Rußb ShouldBe IsDr Taste

2919 43.8 40.8 41.2 1948.2 1948.2 48.6
3003 43.8 40.8 41.0 1948.2 1958.4 49.8
3087 43.6 40.6 41.0 1948.2 1958.4 50.6
3171 43.6 40.6 41.0 1948.2 1948.2 51.0
3234 43.6 40.4 40.6 1948.2 1938.0 51.0
3318 43.4 40.4 40.8 1948.2 1948.2 51.0
3381 43.4 40.2 40.6 1948.2 1948.2 51.8
3465 43.2 40.0 40.2 1948.2 1948.2 52.6
3528 43.2 40.0 40.4 1948.2 1948.2 52.6
3591 43.2 39.8 40.0 1948.2 1948.2 52.6
3633 43.2 39.6 39.6 1948.2 1948.2 52.6
3696 43.0 39.6 39.6 1458.6 1938.0 94.4
3654 00.0 39.6 15.6 0989.4 0999.6 59.8
3570 00.0 39.8 13.8 0979.2 0948.6 59.8

Question (3):
Is it perhaps normal for "Tast" to suddenly shoot up like that?
briefly, that the other logs also had a low sampling rate.
perishes?
Perhaps the brevity of extreme events provides the answer.
Instructions, also question (2).



Thank you for the responses.

Klaus.

Hi.

I only glanced at it briefly, BUT:

Why should the key response jump around erratically if the actual pressure is perfectly following the desired pressure?

If the pressure sensor started malfunctioning and wildly adjusting the VTG (Variable Transmission Gear), everything would go haywire.

BTW: Your car runs on boost pressure, not on pulse width modulation .
And the boost pressure is correct, right?

m;