DonaldsonTechnology—Low NO2 Diesel Particulate Filter for Non-Road Applications (NR-LNF DPF) System
This retrofit technology is included on EPA's Verified Technologies List for Clean Diesel.
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Technology specifications
| Engine Model/Application |
Non-road, Tier 1 or Tier 2 diesel engines certified, maximum PM level of 0.25 g/bhp-hr, power rating 75 ≤ Kilowatts < 450 (100.6 ≤ Horsepower < 603.4) |
|---|---|
| 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% |
Criteria to achieve emission reductions
The following criteria must be met in order for appropriately retrofitted engines to achieve the aforementioned emission reductions:
- The engine must be operated on ultra-low sulfur diesel fuel (ULSD) of 15 ppm or less.
- The NR-LNF DPF System requires an exhaust temperature profile sufficient for regeneration. For engines with certification levels of 3.0 to 8.0 g/bhp-hr NOx and 0.01 to 0.11 g/bhp-hr PM, a duty cycle with a Weighted Average Temperature (WAT) at or above 250°C or at least 40% above 245°C (Category 1). For the engine group with emission certification of 5.0 to 8.0 g/bhp-hr NOx and 0.11 to 0.25 g/bhp-hr PM, a duty cycle with a WAT at or above 320°C or at least 40% above 320°C (Category 2). For the engine group with emission certification of 3.0 to 4.99 g/bhp-hr NOx and 0.11 to 0.25 g/bhp-hr PM, a duty cycle with a WAT at or above 362°C or at least 40% above 372°C (Category 3).
- Donaldson approved dealer shall perform an engine pre-assessment that assures the engine is at a minimum operating condition to prevent excess soot build up and that checks the maximum flow rate necessary for installation. The dealer will provide the owner with a copy of the pre-assessment.
- Donaldson approved dealer will install the Donaldson Emissions Device Monitor with the NR-LNF DPF System to constantly monitor backpressure and temperature on all vehicles equipped with this diesel particulate filter.
- The NR-LNF DPF System can be applied to engines with a maximum PM certification level of 0.25 g/bhp-hr.
- The engine must be well maintained and not consume lubricating oil at a rate greater than that specified by the engine manufacturer.
- The vehicle may not be equipped with an oil burning system and lube oil or other oils may not be mixed with the fuel.
- The engine must not have been originally certified or equipped with a diesel particulate filter.