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WHAT IS A DPF BURN-OFF/REGENERATION/REGEN?

GUIDE DPF: Part 2

There are a few different ways in which a DPF burns off the captured material, otherwise known as a regeneration/regen.

Passive DPF burn
All DPF-equipped vehicles, once they’ve reached a certain temperature within the exhaust system, will burn off the matter caught in the DPF. The temperature reached is enough for the particles to be burnt off to ash, and this clears the DPF. This will most often happen on longer drives and is specifically how a DPF system is supposed to work.

Manual (active) DPF burn
If you’re more likely to do short hops to work or picking the kids up from soccer or getting the groceries, some manufacturers have added a manual DPF burn-off button. This essentially forces the vehicle to heat up quicker and begin a burn straight away. This is done by injecting raw fuel into your exhaust to increase temps high enough within the DPF to effectively burn the matter out, or ‘regen’. Undertaking a manual burn-off will allow you to do it on the way to work, instead of it automatically initiating a burn-off cycle while you’re sitting out the front of the kid’s school pluming smoke everywhere.

If you’re cruising along a non-gazetted road or track, or driving cross-country and the unexpected happens, are you confident that your insurer will cover you?

Club 4X4 explicitly give you cover anywhere in Australia. Gazetted, non-gazetted, cross-country. 

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Automatic DPF burn
The auto burn-off is essentially the same as the manual burn-off, except that your fourby will undertake a burn-off once the DPF is ‘full’, possibly in less than ideal conditions (like sitting in traffic, or in the shed once you get home). The DPF system has a bunch of sensors that monitor temp and amount of flow and will initiate a burn-off without you being much the wiser when it needs to.

Chances are you won’t notice the burn-off, but whoever’s sitting behind you will probably see the white plume of smoke your fourby starts blowing.

WHAT IS A DPF BURN-OFF/REGENERATION/REGEN? CONT'D

Why it does this
Thinking back to how your DPF system works, it’s capturing the nasty semi-unburnt matter (think soot) that would normally be dumped out of your exhaust. As it captures these particles, they get stored or caught against the filter. Over time, this builds up, and to get rid of this material, the exhaust system burns them out, cleaning the filter, and breaking the particulate matter down into their most inert forms.  

There are a few different ways in which a DPF burns off the captured material, otherwise known as a regeneration/regen.

Passive DPF burn
All DPF-equipped vehicles, once they’ve reached a certain temperature within the exhaust system, will burn off the matter caught in the DPF. The temperature reached is enough for the particles to be burnt off to ash, and this clears the DPF. This will most often happen on longer drives and is specifically how a DPF system is supposed to work.

WHAT IS A DPF BURN-OFF/REGENERATION/REGEN?

Manual (active) DPF burn
If you’re more likely to do short hops to work or picking the kids up from soccer or getting the groceries, some manufacturers have added a manual DPF burn-off button. This essentially forces the vehicle to heat up quicker and begin a burn straight away. This is done by injecting raw fuel into your exhaust to increase temps high enough within the DPF to effectively burn the matter out, or ‘regen’. Undertaking a manual burn-off will allow you to do it on the way to work, instead of it automatically initiating a burn-off cycle while you’re sitting out the front of the kid’s school pluming smoke everywhere.

GUIDE DPF: Part 2

SCROLL TO CONTINUE WITH CONTENT

ADVERTISEMENT

If you’re cruising along a non-gazetted road or track, or driving cross-country and the unexpected happens, are you confident that your insurer will cover you?

Club 4X4 explicitly give you cover anywhere in Australia. Gazetted, non-gazetted, cross-country. 

Automatic DPF burn
The auto burn-off is essentially the same as the manual burn-off, except that your fourby will undertake a burn-off once the DPF is ‘full’, possibly in less than ideal conditions (like sitting in traffic, or in the shed once you get home). The DPF system has a bunch of sensors that monitor temp and amount of flow and will initiate a burn-off without you being much the wiser when it needs to.

Chances are you won’t notice the burn-off, but whoever’s sitting behind you will probably see the white plume of smoke your fourby starts blowing.

WHAT IS A DPF BURN-OFF/REGENERATION/REGEN? CONT'D

Why it does this
Thinking back to how your DPF system works, it’s capturing the nasty semi-unburnt matter (think soot) that would normally be dumped out of your exhaust. As it captures these particles, they get stored or caught against the filter. Over time, this builds up, and to get rid of this material, the exhaust system burns them out, cleaning the filter, and breaking the particulate matter down into their most inert forms.