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Verified Technologies for SmartWay and Clean Diesel

DonaldsonTechnology—Semi-Active Electric Filter for Non-Road Applications (NR-SEF) System

This retrofit technology is included on EPA's Verified Technologies List for Clean Diesel.

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Technology specifications

Engine Model/Application

Nonroad, model year 1996-2010, power rating between 100 and 400 hp; particulate matter (PM) certification levels less than 0.25 g/bhp-hr

Retrofit Fuel, Max Sulfur 15 parts per million (ppm)
Reduction in particulate matter (PM) 90%
Reduction in nitrogen oxide (NOx) n/a
Reduction in hydrocarbons (HC) 95%
Reduction in carbon monoxide (CO) 90%

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Criteria to achieve emission reductions

The following criteria must be met in order for appropriately retrofitted engines to achieve the aforementioned emission reductions:

  1. The engine must be operated on ultra-low sulfur diesel fuel (ULSD) of 15 ppm or less.
  2. The engine must be a model year 1996-2010 nonroad engine with power rating between 100 and 400 hp and particulate matter (PM) certification levels less than 0.25 g/bhp-hr.
  3. A Donaldson approved dealer will install the Donaldson Emissions Device Monitor with the NR-SEF System to constantly monitor backpressure and temperature on all vehicles equipped with this diesel particulate filter.
  4. For active regeneration, owners are periodically required to plug in their NR-SEF System to the Regeneration Control Station.
  5. The engine must be well maintained and not consume lubricating oil at a rate greater than that specified by the engine manufacturer. Crankcase oil burning systems may not be used with this diesel particulate filter.
  6. The vehicle may not be equipped with an oil burning system and lube oil or other oils may not be mixed with the fuel.
  7. The engine must not have been originally certified or equipped with a diesel particulate filter.

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Verification Letter from EPA

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