DPF Differenzdruck Normwerte | Posts 32+

A4 8K, CJCD, Mileage approximately 140 Tkm, Freshly regenerated:

Differential Pressure:
- 2 hPa at 0 min-1, Offset 1 hPa
- 26 hPa at 1500 min-1 (Full throttle, DPF 276 °C, air mass flow 56 g/s, boost pressure 1755 hPa)
- 150 hPa at 4000 min-1 (Full throttle, DPF 488 °C, air mass flow 152 g/s, boost pressure 2330 hPa)

Volume: 0.09 l (39.5g) with a limit of 0.175 l.
hg
Herbert

A4 8K, CJCD, Odometer: 180 Tkm, Freshly Regenerated:

Differential Pressure:
at 5 hPa, offset 1 hPa
at 3 full-throttle runs in 4th, 5th, and 4th gear Gang:
- around 30 hPa at 1500 min-1;
- around 190 hPa at 4000 min-1.

Volume: 0.12 l (53.1 g) with a limit of 0.175 l.
hg
Herbert

A4 8K, Mileage: 199700 km, Recently refurbished:
Differential Pressure:
Idle 9 hPa (after 3 measurements), Offset 0hPa
at 3 full throttle runs: 5th gear:
- around 30 hPa at 1500 min-1;
- around 190 - 200 hPa at 4000 min-1.

Consumed 56.6 g (0.14 l) at a limit of 0.175 l.

After the previous service regeneration trip, the soot mass values (measured and calculated) are finally identical, with no decimal places. Previously, the difference was 8 g (calculated > measured). Due to the high calculated value, regenerations had become more frequent.
hg
Herbert