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Verified Retrofit Technologies from Caterpillar
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| Technology | Engine Model/Application |
Retrofit Fuel, Max Sulfur (ppm) | Reductions (%) † | |||
|---|---|---|---|---|---|---|
| PM | CO | NOx | HC | |||
| Diesel Particulate Filter | Nonroad, 4-cycle, non-EGR equipped, model year 1996-2005, turbocharged engines with power ratings 130 ≤ KiloWatts < 225 (174.2 ≤ Horsepower < 301.5) | 30 | 89 | 90 | n/a | 93 |
† - Baseline assumes an unmodified engine running on 15 ppm sulfur fuel.
The following operating criteria must be met in order for appropriately retrofitted engines to achieve the above emissions reductions:
- The engine must be operated with a fuel that contains a sulfur content of no more than 30 ppm.
- The DPF requires an exhaust temperature of 260° C for 40% of the cycle for NOx:PM ratios of less than or equal to 20:1 and for NOx:PM ratios equal to or greater than 25:1, only 200° C for 40% of the cycle is required. (As there may be significant variations from application to application, Caterpillar will review actual vehicle operating conditions and perform temperature data-logging prior to retrofitting a vehicle with their PM filter system to ensure compatibility.)
- Caterpillar will install a backpressure monitor and high pressure indicator light on all vehicles equipped with this DPF.
- The engine should 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 product.
Caterpillar has indicated there is a negligible (approximately 1 percent) fuel economy penalty with the use of this technology.
| Technology | Engine Model/Application |
Retrofit Fuel, Max Sulfur (ppm) | Reductions (%) | |||
|---|---|---|---|---|---|---|
| PM | CO | NOx | HC | |||
| Emissions Upgrade Group | Caterpillar model 3306 diesel engines for nonroad applications with model years from 1988 to 1995 with mechanical direct fuel injection. | 500 | 22 | 13 | 37 | 71 |
The following operating criteria must be met in order for appropriately retrofitted engines to achieve the above emissions reductions:
- The servicing dealer must follow specific installation instructions approved by Caterpillar, check and/or replace other engine parts and validate that the upgraded engine has the necessary Tier 1 components installed and has been tested to ensure that the engine delivers the proper fuel delivery, power, torque, and speed. The dealer must submit a validation form to Caterpillar in order to receive a label for the upgraded engine and to comply with this verification.
- The engine must be operated with fuel that contains no more than 500 ppm sulfur.
Note: The Caterpillar Emissions Upgrade Group includes the components necessary to upgrade Caterpillar model 3306 diesel engines with model years from 1988 to 1995 to US EPA Nonroad Tier 1 emissions levels. The primary components are the turbocharger, fuel pump/governor, fuel injection nozzles, pistons/rings/liners; and aftercoolers, if applicable.