Fuel Injection for Turbocharger Blow-Off Valves.

Hello!

My automatic transmission in my Volkswagen Golf III is currently slipping at higher gears when accelerating fully.
Approximately 3000 RPM, it frequently goes into emergency mode (error code 575).
Measurements (unfortunately, the emergency mode was not triggered) revealed a significant overpressure.
bis zu 2500 mbar bei einer Tastrate von 90% für das LD-Magnetventil. Before a...
In previous years, the maximum values were still around 2200 millibars at approximately 65%.

Okay, I guess I have either a faulty VTG adjustment or a defective LD solenoid valve.

However, I have also observed for about a year that at the critical speed...
A noticeable, short-term decrease in acceleration was observed in the measurement logs.
was caused by a simultaneous decrease in both the mass airflow rate (MAF) and the boost pressure?
understandable. That, too, falls under the term "wave-like acceleration."
often been discussed.
In my case, LMM-related issues can probably be ruled out, as the LMM was not active at that time.
already new and provides values that, both then and now, are in the critical range.
Exclude soot limitation.

Assuming that this acceleration wave has always been caused by a sudden...
LD waste during the sudden overcoming of the can opener ("underswing").
Now that this has been triggered, the question that arises for me is: What does the MSG have to do with the injection quantity?
in the following short-lived and "unusual" situation:
- Driver request: full 45mg/L.
- LMM value is good, exceeding the target value of 850 mg/R.
- LD (Low-Density Layer) significantly below the target value of 1948 mbar.

If the fuel injection quantity is only determined by driver preference, torque limitation, and soot reduction.
If something were to depend on this, we would briefly see a cloud of smoke because there would be a temporary decrease in...
Air is reported as being available according to the LMM, but I have never seen a cloud.

So, is the amount of fuel injected perhaps also dependent on the boost pressure?

Sorry if that was already obvious.

Greetings, Klaus.

"Der schnelle braune Fuchs springt über den faulen Hund."

Volkswagen Golf III, AFN engine, 1997, 156,000 kilometers.

Hi Klaus,

The reason you might not see any clouds is due to the good air circulation in the standard configuration.
The driver's desired settings are largely irrelevant; take a look at the fuel injection limit based on torque at that engine speed.

Best regards, Rainer.