Bristol’s Number One DPF Cleaning, Restoration and Replacement Centre
Regular vehicle maintenance is vital and when it comes to your vehicle’s DPF, frequent servicing is a must to keep your vehicle running at optimum levels and to prevent the need for costly repairs. At prices starting from £250, BS3 can service your DPF, ensuring your vehicle remains in top condition. Book with us today.
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What is a DPF?
All diesel vehicles come equipped with a Diesel Particulate Filter, known as DPF. The DPF is designed to remove at least 85 percent of the diesel particulate matter or soot from the engine exhaust gas. The DPF is located underneath the vehicle and is attached to the exhaust system, close to the engine.
Your vehicle’s DPF uses active technology to burn off soot that accumulates and can block the filter. When the soot reaches approximately 600℃, it then turns to ash which can pass through the filter and out through the tailpipe.
How It Works
Thanks to pressure sensors located either side of the DPF, the vehicle’s engine control unit (ECU) can detect filter blockages and will cause the exhaust to heat itself through the injection of diesel into the engine’s cylinders after the combustion stoke, when the exhaust valves are open. The unburned fuel then enters the DPF, where it is ignited to increase the internal temperature.
This process is known as Active Regeneration and can only take place when the engine is at its optimum running temperature, at speeds above 35 mph. However, in low speed urban areas, where vehicles are less likely to reach speeds over 35 mph, especially when the engine coolant is cold, the process is not activated.
In such cases, if the necessary conditions are not met, Active Regeneration will fail and the DPF will continue to clog until a warning lamp on the vehicle dashboard alerts the driver. If this is ignored, the DPF can become so blocked that the engine will revert to what is known as an emergency ‘Limp Home’ mode and will require garage attention.
A garage may be able to force the DPF to regenerate, but this is not guaranteed to cleanse the filter and the only remaining solution may be an expensive replacement. Save yourself added money, stress and time by bringing your vehicle in for regular DPF servicing.