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What Are DPF Filters And How Does It Work?

Meaning Of DPF Filters

One such part is the DPF or Diesel Particulate Filters. Now, what is a diesel particulate filter? A DPF or a diesel particulate filter is a filter that picks up and stores exhaust soot a diesel car.

A diesel car is an incredible coming together of quite a few intricate parts and it is awe-inspiring how everything comes together to create a work of mechanical marvel. However, these parts need to be at their optimum best to allow the car to perform as it is meant to.

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Important Things Related To DPF Filters

This is put in place to help reduce the emissions from a diesel car. The other important aspects related to DPF filter are described as below.

How Does It Work?

The name somewhat gives it away. First of all, it is only found in diesel engines. These diesel engines produce exhaust soot which produces smoky exhaust gases and has a detrimental effect on the emission figures of the engine. The DPF system captures this exhaust soot and allows the exhaust gases to be a lot cleaner.

Another reason to equip diesel cars with DPF filters is that they are required by law. DPFs have been mandatory in diesel cars for almost a decade now. And for that it is advisable to get familiar with the installation of DPF.

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Symptoms Of A Blocked DPF

The downside to Diesel Particulate Filter device is that over time it can collect so much soot that it can get clogged up which can lead to a host of issues such as a loss in performance and in extreme cases, engine failure. The upside is that maintaining a DPF system is actually quite easy. In principle, an optimally maintained DPF should stay functional for more than 150,000 kilometers. All you have to do is ensure that the soot that gets collected in the DPF gets burnt off at regular intervals. There are three main ways of doing this and we will look at all of them.

Causes Of DPF Problems

There are many things that can cause a DPF to have problems, this can be things like a failing turbo with oil dripping into the DPF or when the EGR valve is clogged, each of these have knock on effects to the engine. You can go through the ultimate guide to DPF filters to get clear idea about each and every cause that can create problems for DPF.

How To Maintain A DPF

Passive Regeneration

This can be achieved by taking the car for a drive on a long and empty road, preferably an A-road and drive the car at speeds of over 40 mph for between thirty minutes to an hour. This increases the exhaust temperature burning off the deposits in the DPF. This can be difficult for people using their cars mostly for city driving and that is where the second option comes into play.

Active Regeneration

Almost every modern diesel car comes equipped with an engine mode that actively burns off the soot collected in the DPF. This usually happens at a predetermined interval where more fuel is pumped into the engine which raises the temperature of the exhaust thus burning off the soot.

Forced Regeneration

This is the Hail Mary for DPFs. If a DPF is neglected long enough, such as when the car is consistently being driven in stop-go traffic, then it can get clogged up to the point where both passive and active regeneration can be rendered useless. You will need the help of a trained mechanic to do this and it is always a great idea not to allow the DPF to get this beat up.

Cost Of Replacing A DPF

A DPF replacement can cost over $5,000. So, it is really worth knowing the causes of a DPF failure in order to somehow avoid it. It is advisable to periodically replace those parts and accessories of your vehicle which can cause major problems in the future. Prevention is better than cure as they say.

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