Leistungsverlust im unteren Drehzahlbereich1,9 TDI-PD 130 PS | Posts 48+

matt wrote:

Komisch finde ich den LMM-Einbruch bei 2000 min^-1, wie man in der ersten xls-Datei sehr schön sehen kann.

That actually corresponds quite well to the decrease in LD (lambda value) at the same engine speed: less LD means less air mass, which is perfectly logical.
Many TDIs exhibit this low-RPM "stuttering" or hesitation when accelerating at full load, and it's likely not a sign of a defect (mine does too).

Yes, you're absolutely right! Unfortunately, I lost the log data from a similar test that used a diode, due to messing around with the CSV file. It would have been great to see what was happening there. I'll try to visualize that data again using Excel later.
I'm curious to see what comes out of a new LLM in terms of soot reduction and other factors.

Best regards, Matthias.