What Is Inside A Diesel Particulate Filter?

What Is a Diesel Particulate Filter, and How Does It Work? A DPF typically uses a honeycomb-shaped substrate consisting of ceramic material. Diesel particulate filters catch and store exhaust soot, which must be burnt off periodically to regenerate the filter in order to reduce emissions from diesel automobiles.

What metal is in a DPF filter?

  • The DPF is a ceramic filter with thousands of microscopic channels. Soot gets caught along the channel walls as the exhaust flows through, preventing it from exhausting through the stacks.
  • This structure is coated with a chemical catalyst containing small amounts of precious metal, commonly platinum or palladium, that interacts with and oxidizes pollutants in the exhaust stream (CO and unburned HCs), lowering harmful emissions.
  • Soot clinging to the channel walls prevents exhaustion through the stacks.
  • To stay functional, the DPF must periodically remove soot that has built up along the channel walls.
  • Regeneration is an oxidation process that removes soot from a filter by heating it.

Can you scrap a DPF filter?

Failed or damaged DPFs and DOCs are usually worth something since they are coated or “catalyzed” with Platinum Group Metals (PGM). They should be recycled by a qualified recycling business to ensure that the PGM is recovered for use in other goods because of their high value. Recycling is perfect since it allows you to generate money while preventing the waste of potentially usable resources and reducing the use of more expensive raw materials.

A failed DPF or DOC is often worth $20–$700, depending on PGM content and commodity costs. The value of your DPFs and DOCs is determined by a number factors, including current PGM market values at the time of quoting (or settlement), as well as the manufacturer and model of the parts you return for recycling.

The alternative to recycling is to sell DPFs and DOCs for $0.50-$3.00 apiece to a scrap metal firm, or, even worse, to throw them away as rubbish and pay your waste removal company to cart it away. For a variety of reasons, most sensible businesses opt for recycling at a cost of $20–700 per unit and only engage with a reputable company.

Can I hollow out my DPF filter?

It is possible (and has on the 07.5, 08 and early 09 models). The ECM in these newer trucks is different, and it’s currently being investigated. However, a DPF could theoretically be hollowed out, a Smarty or H&S programmer installed, and the user would be code-free.

Where is The DPF Filter Located?

Within the exhaust system, DPF filters are installed. The filter is located before the NOx trap (also known as the NOx storage catalytic converter) and the exhaust pipe, but after the temperature sensor. The DPF filter is essentially the component of the exhaust system nearest to the engine.

How does The DPF Filter Work?

Internal combustion engines, or diesel engines, are internal combustion engines. The engine’s cylinders compress air to the point where it becomes a dense gas, dense enough to superheat the diesel fuel and ignite it. This results in a “managed explosion,” in which the majority of the thermal energy is converted to kinetic energy by the engine’s internal mechanics (the physical motion of the piston and crankshaft), which turns the wheels and powers the truck.

Precious metals against pollution

Rhodium, palladium, and platinum are found in catalysts and DPF. These precious metals, which are highly resistant to oxidation, acid, and corrosion, are increasingly being used in the automobile industry. They have features that make it impossible to replace them. These three marvels are unrivaled when it comes to removing tiny particles from exhaust emissions.

Rhodium is approximately 7 times more valuable than gold. 85 percent of it comes from South Africa and is used in the automobile industry, as well as chemicals and jewelry. The industry is under severe strain, as demand for lining catalytic converters continues to rise. Environmental regulations are growing more strict, and even developing countries are demanding them. This growing demand provides fertile ground for organized crime to thrive.

Palladium, on the other hand, is mined in Russia, South Africa, and Canada. It also outperforms gold and is mostly used to make catalysts.

The most well-known of the three precious metals is platinum. South Africa is the world’s largest producer.

Is it illegal to sell DPF?

NO. “No party shall promote, sell, lease, or offer for sale or lease a used verified diesel emission control plan,” according to Title 13, CCR Section 2706. As a result, selling a used DOC or DPF is prohibited. Hazardous waste can be found in both DOCs and DPFs, primarily in the form of zinc from lubricating oil.

Can I drill holes in my DPF filter?

-Drilling holes will clog the rest of the filter, preventing it from regenerating. Although airflow will pass through the drilled holes, soot will be caught by the filter. You’ll create excessive backpressure if you don’t have enough holes.

How do you extract platinum from DPF?

  • Remove the catalytic converter from the vehicle’s undercarriage. Remove it with a chop saw or flame cutter, or detach the bolts with a socket wrench.
  • Split open the catalytic converter with a cutting torch or flame cutter. To protect yourself, wear strong industrial gloves and goggles.
  • Nudge the ceramic honeycomb out of the case by exposing it. (Older CCs, in some situations, utilize coated pellets instead.)

How much is a diesel particulate filter worth?

Depending on the grade and brand, a diesel particulate filter might cost anywhere from $1000 to $10,000. DPF filters that are less expensive range from $1000 to $4000. DPFs that are more expensive start at $4000 and go up to $10,000 for huge Freightliner vehicles.