Diesel Particulate Filter | Own The Road

 

We specialize in resolving emission issues.

DPF – the number 1 source of diesel engine downtime.

The Diesel Particulate Filter, or DPF in your diesel engine is a device designed to collect diesel particulate matter or soot from the exhaust gas. When the filter gets clogged, it triggers a “regeneration cycle”. This cycle floods the catalytic converter full of diesel fuel and then ignites the fuel to burn off the trapped soot. This greatly reduces power and decreases drivability. Even worse, excessive soot backs up into the turbo and without frequent and expensive mandatory maintenance damage will result. Eventually, the DPF will have to be replaced at considerable cost. The DPF is responsible for poor economy, reduced power, contaminated engine lubricants and greater maintenance.

DPF Problems

  • Excessive regeneration cycles
  • Clogged and cracked DPF Filters
  • High cleaning and replacement costs
  • Reduced power/limp mode in PTO
  • VGT actuator and turbo damage

Remove the EGR.

Exhaust Gas Recirculation (EGR) is a nitrogen oxide (NOx) emissions reduction process used in diesel engines. EGR provides no performance benefit to the diesel engines. It can be removed with no ‘ill effects’ to make your diesel engine will run better.

EGR works by recirculating a portion of the exhaust gas back to the cylinders. Intermixing the incoming air with recirculated exhaust gas dilutes the mix with inert gas, lowering the adiabatic flame temperature and reducing the amount of excess oxygen. The exhaust gas also increases the specific heat capacity of the mix, lowering the peak combustion temperature. Deleting the EGR blocks off the exhaust gas return port to prevent exhaust gasses from re-entering the engine.

Eliminating the EGR is intended to:

  • Create better running diesel engine
  • Create better/more low end power
  • Reduce black smoke emission
  • Increase engine efficiency therefore lowering fuel consumption

The DEF/SCR problem

Selective Catalytic Reduction (SCR) technology uses a catalyst system to break down the Nitrous Oxide emissions produced by diesel engines into nitrogen and water. The chemical reactions used in SCR systems require a constant feed of ammonia gas which is delivered using Diesel Exhaust Fluid. The DEF catalyst is a solution consisting of urea and de-ionized water. This is sprayed into the exhaust stream through an advanced injection system and then converted into ammonia.

Recognizing Defness

  • DEF requires an extra heated tank, results in a heavier truck and requires drivers to routinely fill it up.
  • Recalls on bad SCR Catalysts and supply line defaults are common.
  • SCR trucks are more expensive. They’re heavier and more complicated and don’t allow engine manufacturers to tune the system the way they want to.
  • Historically, urea and DEF alike have been somewhat volatile in pricing terms.
  • The supply and sales infrastructure for DEF might not be ready to meet current demands.
  • At certain temperatures the DEF liquid will crystallize, plug the line and send your truck into de-rate.