Australasia DFP burn offs

[TheDocAUS]

We need some control or say over DFP burn offs, instead of “helicopter mode” coming on at anytime it decides. I have lost count the number of times burns off decide to start 2 minutes before I get home.

If this occurs in remote Australia in spinifex, the car could be lost by setting fire to the spinifex.

My suggestions:

• When off-road mode is on, no DPF burn offs;
• When the car reaches 85% before a burn off is to start, the driver is notified;
• Any time the car is at 85% or more, the driver can start a burn off, at a time of their choosing;
• if a burn off starts, the driver can stop or delay it.

 

[TheDocAUS]

Has there been an explanation for any of the major Grenadier fires in Oz? (I think there has been three). I’m normally not a conspiracy theorist but they have been very good at keeping the reasons for these fires from reaching social media or this forum, I would have thought at least some info would have come out?

One source was the engine cover in diesel cars melting and catching fire. Hence the recall to replace the engine covers in diesel models with higher rated heat insulation. I do not think the Petrol model has the same problem.

 

[globalgregors]

Can you expand on this for those of us that rarely get to 1,000m mate?

There appears to be some factor associated with altitude that triggers a regen. Air pressure? Oxygenation?
If one is in environments of higher sulfur diesel (eg 15-50ppm) then regen frequency is already increased.

Not necessarily itself a problem however many roads at high altitude also involve severe duty: tight corners, slippery surfaces, steep inclines, mud/snow, perilous drops etc. In these situations the engine bay temperature runs up quickly during a regen and there is no opportunity to push airflow through by speeding up a bit.

Above 4,000m, although the Grenadier performs fine, on a major pass one is usually amongst trucks whose performance is severely compromised at that altitude. Again, it’s just difficult to get the airflow going to mitigate engine bay temperatures. We don’t carry a temp/thermo detector so I can’t be precise, but anecdotally if one opens the hood it’s like a pizza oven in there during a regen.

We have jettisoned our (second!) engine cover, all acoustic pads and installed additional radiant heat shielding.

Other discovery is that the AdBlue system throws a fault at high altitude (>4,500m?), seemingly only if the tank is full.
Fault goes away once one returns to a lower altitude (~3,500m?). Air/Line pressure? Tank expansion?