Introduction to Diesel Particulate Filters (DPF)

Diesel Particulate Filter Diesel particulate filters have been used by some vehicle manufacturers for several years now, but only since about 2009 has it been mandatory for all vehicles to be fitted with them to help achieve strict new Euro 4, 5 and 6 emissions.

These filters can often be confused with catalytic converters or silencer boxes since they look similar and are usually incorporated as part of the exhaust front pipe near to the engine.

Their purpose is to trap diesel particulate matter, or soot, as it’s often referred to. All diesel engines smoke under hard acceleration, especially when cold, due to the entire diesel not being burnt. Even with the major advances in high pressure common rail diesel systems not all of the diesel combusts and this can be seen as black smoke coming from the vehicles tailpipe where a DPF isn’t used. If you observe a diesel vehicle that’s accelerating and there isn’t any smoke being emitted it’s more than likely fitted with a DPF.

Sooner or later, depending mainly on driving style or conditions, these filters become restricted or blocked but vehicle manufacturers have taken steps to help prevent this from happening. Periodically these filters need to be cleaned or emptied but without removing them from the vehicle, this process is often referred to as DPF Regeneration.

The engine management system monitors the DPF’S soot fill percentage  and decides when regeneration is necessary. As well as monitoring the DPF’S back pressure to detect a partially blocked filter, some ECU’s are programmed to carry out regeneration based on mileage covered or hours driven.

Necam | LPG BMW X3 | Factory Fitted Systems | LPG Volvo | Rolling Road Bolton | LPG Mercedes C180 | LPG Porsche | Diesel Tuning Bolton | Bolton | Vauxhall LPG | Research Development | LPG conversion | LPG Petrol | Metatron | LPG tank | Romano | DPF problems | LPG Range Rove | LPG Subaru Forester | Range Rover LPG | LPG Jaguar | Bolton LPG | LPG Honda Jazz | Diesel Particulate Filter | LPG Vauxhall | Ford Service | LPG Diahatsu | Nos | LPG Mercedes | LPG Jeep Cherokee | Ford LPG problems | DPF Removal | remapping | Rolling Road | uklpg Approved Installer | Zavoli | Select-A-Map | DPF | Gerd Van Aaken | LPG Installation | Prins | LPG BMW | DPF Delete | LPG reducer | DPF regenration | Vialle | Diahatsu Terius LPG | LPG filler | LPG Jaguar X Type | LPG Nissan Almera | LPG Vauxhall Vectra | Ford LPG | LPG under-bonnet | Koltec | Blocked DPF | LPG Filling Stations | LPG Mercedes S430 | LPG Honda | LPG Subaru Impreza WRX | Landi Renzo | LPG Subaru Legacy Type R | Diesel Tuning Boxes | Fueler | LPG P38 Range Rover | Evolution Chips | LPG Toyota Estima Aeras | LPG Volvo V70 | Diesel Performance Bolton | LPG Audi | Diesel Performance | LPG Vauxhall Corsa | AEB | Stag | OMVL | LPG Diahatsu Terius | Nitrous Petrol | Bolton Car Servicing | Fuel Savings | LPG Honda CRV | LPG Porsche 911 | LPG Subaru Impreza | LPG Toyota Landcruiser Amazon | Icon | LPG Injectors | LPG Toyota | LPG Mercedes 230 | Nitrous Oxide | Dyno | LPG Vauxhall Zafira | Superchips | Bolton LPG repair | Emissions | LPG Landrover | LPG Audi A8 | Driveability | diesel remap | r LPG Subaru | BRC | LPG Vauxhall Insignia | Bolton Diesel Specialists