DPF Differenzdruck Normwerte | Posts 16+

BLS, Series, VW Caddy
DPF roughly cleaned
175000km
938.4 mbar Air pressure, Ambient temperature 12°C
up to approximately 165 mbar

- BWB
- Series
- 221,000 km, Ash mass 53g
- 948mBar Ambient Pressure, 17° Intake Air Temperature
- up to 90mbar differential pressure

Passat 3C

MKB: BMP

Series (according to statement)

138367 km

Ambient air pressure: 979.2 mbar
Suction pipe temperature: 42.3°C
Coolant temperature: 86.4°C
Fuel temp: 64.8 °C

Full throttle log before DPF cleaning

Odometer: 249360 km
Ambient Pressure: 999.6 mbar // Outdoor Temp: 16 °C // Suction Pipe Temp: 27.5°C
Ash mass: 63g
Max. Differential Pressure in the Particulate Filter: 323 mbar @ 4200 rpm

Wow

-15.3 mbar Offset.

I always thought that my +/- 13 mbar readings were already quite bad and actually a reason to throw the sensor away.

Hm,
My differential pressure sensor seems to be able to handle more; I've also seen values around 400 mbar.

.. and once again, something that is difficult to understand

m;

Here is my 135,000km DPF, completely regenerated, and then I gave it full throttle. Difference in pressure sensor log.

Full-throttle log after forced regeneration, engine code CFFB (2.0 CR TDI, 103kW) in the Audi A3:

Odometer: 106000km
Ambient Pressure: 940mbar
Outdoor Temperature: 12°C
Ölaschevolumen: 50ml
Max. Differential Pressure in the Particulate Filter: 175hPa (equivalent to 175mbar) @ 4500rpm

Here is the differential pressure at the particulate filter of my 3.0TDI ASB 233PS, which has been tuned to approximately 270PS.
Particle filter ash loading 0.32. Filter has just completed a normal regeneration.

I am planning to verschandeln the filter due to the extremely high differential pressure and exhaust gas backpressure.

I will be documenting my experiences here.

Okay, here's a log showing a cleaned DPF:
Unfortunately, I haven't achieved the success I had hoped for.

It was 18°C with a surrounding pressure of 1009mbar.

The log is back in the 6th. Attempting a "Gang" on the AB with VMAX.

The DPF was discharged against the flow using a compressed air gun until no more came out, and then it was flushed with water and a garden hose.

I would really appreciate it if other owners of 3.0TDI engines also posted their values.
I might try cleaning it again, and then I'll use a DPF cleaner for help.

Hello,
VL-Hochlauf in the 4th. {TEST_NAME} of another 3.0 TDI.
MWB 104 at the time of measurement: 0.20 l / 13g / 9g / 500km
Air pressure 989 mbar; Air temperature 11 °C
LL: 186 Tkm, no tuning
Also, the values are quite high, especially since the DPF hasn't been recently regenerated:
Delta-p 488 mbar @4300 U/min
I need to repeat the measurement with an empty filter at some point.
Normal regenerations occur at distances of >1100km.

Hello,
VL-Hochlauf in the 4th. Measured the rate of regeneration.
MWB 104: 0.20 l / 10g / 6g / 0km
--> Question: How should the soot loading values after regeneration not be 0?
Air pressure 989 mbar; Air temperature 6 °C
LL: 189 Tkm, no tuning

max Δp 406 mbar @4300 U/min

Hello,

MKB: BMM not tuned
LL: approximately 253,000 km
Air pressure: 969 mbar
Ambient temperature: 6 °C
Distance since regeneration: 170 km
Loading: 0%
Ash: 68g (Limit: 60g)
Logfahrt bergauf, 1533/min bis 4032/min
Temp. in the PF max. 498°C
Differential pressure max. 293 mbar
See attached CSV file.

In 2009, I had already logged data, at that time it was around 60,000 km, 16g ash and 534°C in the PF, with a maximum of 324 mbar. The pressure sensor was replaced at 155,000 km.

It seems that the 68g ash does not make a difference in the differential pressure. Are there any other features that indicate a necessary cleaning?
Previously, he would burn all 390 km of fuel. Now, it seems he's burning all 340 km. It might not be the soot loading; could I test with 30g of ash?

Greetings

Hello,
MKB: CFGB, Passat 125KW DSG gearbox (Year 2011)
no tuning, no software update, 166,000 km
989 hPa Ambient Pressure Ambient Temperature 18 Degrees
Measurement blocks under menu: Engine Control are disabled!
Capacity: 100ml
Maximum 407 hPa pressure difference [Edit Admin: In my opinion, this is a bit too high for the mileage or engine oil volume]

Greetings, Petrol

Golf 6 Variant, 2.0 TDI CFHC, Year 2012, Mileage 150,000 km
Ölaschevolumen 80 ml

The images below show the differential pressure during three full-load accelerations, once shortly before regeneration with 18 g of soot mass, and once directly after regeneration with 0 g of soot mass.

The loaded state (18 g of soot mass) has a flue gas pressure approximately 50 mbar higher than the freshly burned, unloaded state.

MKB: CBBB, Passat 125kW DSG gearbox (Year 2009)
no tuning, and without a software update
Regeneration approximately every 1100-1200km
Loading status: 0%
Last regeneration 40km ago

Mileage: Calculated to be approximately 400,000 km. (Purchased in 2016 with "190,000 km", but according to the history, it had already exceeded 213,000 km in 2013.)

According to my knowledge, NO new DPF has been installed, as the part number and manufacturing date match the vehicle's year of manufacture. Whether a cleaning has taken place is unknown, as there are no visible cuts or signs of processing.

989 hPa Ambient Pressure, Ambient Temperature 25 degrees

Capacity: 240ml (Maximum 180ml)
286 mbar pressure difference at 4196 U/min in 3rd gear

When the transmission automatically upshifts to 4th gear at 4600 RPM, the differential pressure briefly increased to 326 mbar.

Unfortunately, the log file is corrupted, and I need to create a new one.

Hello everyone,

I also wanted to share my results. Three times measured:

Before expansion:
MKB: ASB
LL: approximately 203,000 km
Air pressure: 1042 mbar
Ambient temperature: 32 °C
Distance since regeneration: 0 km
Loading: 0 / 0
Ashes: 0.56
Measured full acceleration in 5th gear. Highest value just before the critical point.
DPF Temperature: 537°C
Differential pressure max. 730 mbar


After rinsing and patting dry (there were really a lot of brown, crumbly pieces):
LL: approximately 203,000 km
Air pressure: 1028 mbar
Ambient temperature: 28 °C
Distance since regeneration: 0 km
Loading: 0 / 0
Ashes: Reset to 0
Measured full acceleration in 5th gear. Highest value just before the critical point.
DPF Temperature: 496°C
Differential pressure max. 423 mbar

A month later, the consumption of AB had noticeably increased again. Measurement without prior regeneration:
LL: approximately 205,000 km
Air pressure: 1002 mbar
Ambient temperature: 26 °C
Distance since regeneration: 1300 km
Loading: 16 / 4
Ash: 0.02
Measured full acceleration in 5th gear. Highest value just before the critical point.
DPF Temperature: 522°C
Differential pressure max. 509 mbar

Greetings

Bo