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Diesel Particulate Filters (DPF) as well as the Environment

Diesel Particulate Filters (DPF) and the Environment

Undoubtedly, changes to driving styles may be required for maximum gain from these emission-reducing systems.

How dpf cleaning uk do the filters operate?:

Diesel Particulate filters (DPF) or 'snares' do just that, they get bits of soot in the exhaust.

For a DPF this process is called 'regeneration'; the accumulated soot is burnt off at high temperature to leave just a tiny ash deposit. Regeneration might be either active or passive.

Passive regeneration

Passive regeneration occurs automatically on motorway-sort runs when the exhaust temperature is not low. Many autos don't get this form of use though makers have to design-in 'energetic' regeneration where the engine management computer (ECU) takes control of the procedure.

Energetic regeneration

If the journey's a bit stop/start the regeneration may not finish and the warning light will illuminate to show that the DPF is partly blocked.

It must be possible to start a regeneration that is complete and clear the warning light by simply driving for 10 minutes or so at speeds greater than 40mph.

Should you ignore the light and keep driving in a relatively slow, stop/start pattern when you can expect to see other dashboard warning lights illuminate too. At this point driving at speed won't be sufficient as well as the automobile will have to go to a dealer for regeneration.

Expensive repairs:

If warnings continue to be dismissed and soot loading continues to increase then the most likely outcome is going to be a new DPF costing around GBP1000.

Chiefly town established driving:

If lease automobile use or your own car use is mainly town-based, stop/start driving it would be a good idea to decide on petrol instead of risk the hassle of DPF regeneration that is incomplete.

DPF additives:

The most usual type of DPF is found quite close to the engine so that passive regeneration is potential where exhaust gases will still be comparatively hot and features an incorporated oxidising catalytic converter.

There's not consistently space near the engine though some producers use an alternate form of DPF which relies on a fuel additive to lower the ignition temperature of the soot particles in order that the DPF could be found farther from the engine.



The additive is kept in another tank and is automatically combined with the fuel whenever you fill up. Miniature quantities are needed though so a litre of additive should treat around 2800 litres of fuel.

You should not find anything other than maybe a puff of white smoke from the exhaust when the process is completed.

AA encounter:

The AA has seen evidence of DPF systems neglecting to regenerate - even on automobiles - which are used primarily on motorways. Their conclusion is the fact that on autos with a a sixth gear that is very high engine revs are excessively low to produce adequate exhaust temperature, but occasional tougher driving in lower gears should be sufficient to bum off the soot in such instances.

Examine the handbook: