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.

Diesel Particulate Filter | LPG filler | Diahatsu Terius LPG | AG | Diesel Tuning Bolton | Rolling Road Bolton | Range Rover LPG | Driveability | Bolton LPG repair | r LPG Subaru | DPF Delete | LPG Toyota | LPG Subaru Forester | LPG Honda | OMVL | Stag | Romano | LPG Toyota Estima Aeras | DPF Removal | uklpg Approved Installer | LPG Landrover Discovery 3 | LPG ECU | LPG Vauxhall Corsa | LPG Subaru Impreza WRX | Ford LPG | LPG Honda CRV | LPG Nissan Almera | Factory Fitted Systems | LPG Vauxhall Vectra | LPG BMW | Nitrous Diesel | LPG Vauxhall Zafira | diesel remap | North West | LPG switch | Evolution Chips | DPF regenration | Bolton LPG | LPG Honda Jazz | LPG Filling Stations | Select-A-Map | Fuel Savings | Zavoli | Ford LPG problems | LPG Nissan | BRC | Koltec | LPG reducer | LPG Subaru Impreza | LPG Vauxhall | Diesel Tuning Boxes | LPG Range Rove | LPG Jaguar X Type | LPG Audi | Landi Renzo | Dyno | Necam | Ford Service | LPG Porsche 911 | DPF | LPG under-bonnet | LPG Petrol | AEB | Metatron | Prins | Fueler | Research Development | Rolling Road | Emissions | LPG Mercedes C180 | LPG Volvo V70 | LPG tank | Vauxhall LPG | Blocked DPF | LPG Volvo | LPG Mercedes S430 | Bolton Diesel Specialists | Nitrous Oxide | LPG Jaguar | LPG Injectors | LPG Subaru Legacy Type R | Nos | LPG Installation | DPF problems | LPG Jeep Cherokee | Superchips | LPG Diahatsu | Diesel Performance Bolton | Vialle | Bolton Car Servicing | LPG Toyota Landcruiser Amazon | LPG Landrover | LPG Diahatsu Terius | Bolton Diesel | LPG conversion | LPG Porsche | LPG Audi A8 | LPG Mercedes 230 | Nitrous Petrol | LPG Mercedes