About The Particulate Extraction Unit For Diesel Engines

EnerTeck has exclusive license to the PEx technology which was developed and patented by Indian Technologies LLC. PEx, which is a pseudonym for Particulate Extraction, uses volumetric expansion and contraction to drop the majority of the particulate matter from an exhaust stream. This technology is in the latter stages of obtaining CARB approval. We expect to run final testing on the vessel where the evaluation unit has been operating for over 7000 hours, by the end of June, 2013. If approved by CARB we will immediately apply for a read-across to the EPA for approval since the CARB standards are stricter than the EPA standards. Obtaining these approvals will be a major milestone for EnerTeck as the target market is large and untapped. We have customers waiting for these approvals to come through to begin outfitting their engines with the PEx technology.


The Particulate Extraction Unit (PEx) is a modular device that uses gas velocity changes to create increased slip velocity and temperature reduction to remove particulate, acids, heavy metals, plus furans and dioxins and other items that tend to cling to the particulate. A plurality of chambers is used to increase and decrease the gas velocity in an undulating manner. Two versions of the PEx are available to the marine industry to meet the exact need of each vessel. The first type unit (Type 1) is smaller as it is designed only to bring Tier 0 engines to Tier 1. The second type, Type 2, is designed to reach Tier 2 and potentially Tier 4 standards.


Type 1 features

  • Reduces Particulate Matter (PM) by 25 percent or more
  • Smaller footprint
  • PM's wash into bilge tank for collection and disposal

Type 2 features

  • Designed to bring Tier 2 engines up to Tier 4 standards
  • Reduces acid emissions
  • Reduces heavy metals

PEx Process

The first unit type is currently under evaluation on the Ingram Marine vessel Delaney. This type unit expands and contracts the gases a total of 10 times as they pass through the unit. The pattern of expansion and contractions (using the inlet pipe area as a factor of 1) are: 1X, 2X, 1X, 3X,1X, 5X, 1X, 2X, 1X, 3X, and 1X. Using this pattern, the back pressure on the unit is minimal. The gases travel downward from the entrance port to the 5X chamber and upward from the 5X chamber to the exit. Below the 5X chamber is a storage area for the particulate matter. Periodically, the storage area is opened into a drain that goes to the bilge tank where it is held until it is offloaded for proper disposal as per Local and Federal regulations. Operating temperature for this unit is always above boiling point for the water vapor and usually ranges up to 450° F.

The second type PEx uses the same ratio of expansions but the final expansion (5X chamber) is greater, cooling the gases to below boiling point of the water vapor and slows the gases velocity to 10 feet per second or less. This removes more particulates, water vapor and any acids that liquefy below 212° F. Therefore, most NOx (Nitrous Oxide) and SOx (Sulfur Oxide) are converted to acids and trapped in the PEx. This unit requires a somewhat larger footprint than Type 1 as it requires the greater expansion capacities.


Benefits of PEx

The PEx unit is flexible as it can be designed to fit any space. It can be separated into two towers, provided a connection between the two can be made at the bottom of the units. A monitoring system is provided on both types of units. These monitors measure the back pressure across the unit, inlet and outlet temperatures and engine RPM. This data is stored and available to the operator for reports, data collection and analysis. An alarm feature is provided in the wheel house of the vessel to immediately alert the vessel crew if the back pressure reaches a critical point or if there is a drastic change in exhaust temperature.

PEx benefits include;

  • Reduction of NOx and SOx emissions
  • Substantial reduction in Particulate Matter (PM)
  • No catalyst or activators required (Using EnerBurn┬« with PEx will increase performance)
  • No filters to dispose of
  • Easy to retrofit on existing equipment
  • Easily cleaned
  • Flexible footprint (Customized design)