LMM vs. BMR: Which is Better?

Hi,

Does anyone have LMM values that I can compare to my BMR?

I suspect this component is nearing the end of its lifespan, but I want to somehow verify that with measurements and data.

I find it strange that it never exceeds 1000 mg/H (not logged, just observed).
However, I can no longer precisely remember the conditions.

Greetings.
m;

EDIT: Unfortunately, my BLS has a different LMM .

For the 1.9 TDI engine, I would say: first, log the mass airflow sensor (MAF) data (MWB and check if the engine comes out of limp mode (limitation of power) safely across the entire RPM range when the lambda sensor is within the specified range.
It's only worth looking into the LMM if it's actually beneficial.
There are engines that calculate the opacity without using a mass airflow sensor (MAF), relying only on the lambda sensor (LD). And then, an aging MAF sensor can even reduce the carbon buildup in the intake manifold because it regulates a lower exhaust gas recirculation (EGR) rate.

I don't know what it's like with BMR.

He just doesn't seem to get going sometimes.

It's not building boost properly and then gets stuck at a certain RPM when you try to accelerate.

My idea was that he should believe he wasn't getting enough air.

m;

That could also be due to the LD regulation.

How can heat be sensitive?

Sure, here's the translation:

"For example, thanks to hot-clamping?"

The AGR is also a potential candidate.

Code:

003,0,Abgasrückführung 003,1,Motordrehzahl,(G28),Sollwert (Leerlauf): 790...810 U/min\nSollwert (Volllast): 2800...3200 U/min 003,2,Abgasrückführung,(Sollwert),Sollwert (Leerlauf): 200.0...350.0 mg/Hub\nSollwert (Volllast): 900.0...1300.0 mg/Hub 003,3,Abgasrückführung,(Istwert),Sollwert (Leerlauf): 180.0...350.0 mg/Hub\nSollwert (Volllast): 900.0...1300.0 mg/Hub 003,4,Ansteuerung,Abgasrückführung,Sollwert (Leerlauf): 20.0...70.0 %\nSollwert (Volllast): 0.0 % ; B003,0,Abgasrückführung ; Zündung EIN, Motor EIN (im Leerlauf) ; Grundeinstellung aktivieren ; Bremspedal und Gaspedal gleichzeitig betätigen ; Abgasrückführung wird abwechselnd ein- und ausgeschaltet ; Differenz zwischen "AGR aktiv" und "AGR inaktiv" muss mindestens 100.0 mg/Hub betragen

Also, don't forget: With the current temperatures of 35°C+, a certain "chewing gum" effect when accelerating is also somewhat normal.

TDI-GTI-4-Motion wrote:

Don't forget: With the current temperatures of 35°C+, a certain "chewing gum" effect when accelerating is also somewhat normal.

Yes, especially when there's a heavy trailer attached and the air conditioning is running full blast, even the ARL sounds sluggish at 39º, almost as if it's missing, roughly estimated, 15 horsepower . I have no idea how hot the LD was; I didn't have a laptop with me to check.

The intake air temperature was 50°C - at least, that's what it showed when I was driving on the highway.

I haven't looked closely at the Lambada regulation yet... and the 70% N75 should still be 100% VTG fabric.
The more surprising it is that, at 140 km/h in 6th gear (GRA), it doesn't achieve the boost pressure of 1800 mbar .

m;

Quote:

It's all the more strange that it doesn't achieve the 1800 mbar boost pressure in 6th gear (GRA) at 140 km/h icon_eek.gif

.

Why would he build up more boost pressure than necessary?

... he should earn more because he wants more.

He is clearly not reaching the target pressure.

Well, it looks like there's a vacuum leak or the charger is stuck on the VTG...

What do you mean by "the charger is sticking out"?

I'm puzzled that he usually adjusted the settings perfectly in that system.
Even in that "state," the smoke level was still high enough.

The top 70% of the N75 should not have been opened, even by VTG.
Unfortunately, I didn't log the waypoint.

While driving, there were no noticeable issues; the car easily reached and maintained a speed of 140 km/h.

Here's an overview - I didn't notice the "boost pressure" error until later.

The log was self-driving... so I couldn't really think deeply or carefully about what I was doing . I just wanted to make use of the 150 km and the 36-38 degrees.

I made a typo above.

Quote:

But unfortunately, I didn't log the waymarker.

It would be a good idea... However, I would first check all the vacuum hoses.

I received a similar log from a 2.0 CR TDI engine belonging to a friend. Like Rainer, I initially suspected a vacuum leak. By using a syringe on the VTG sensor, we were able to identify it as the cause... It's quite a quick check.