NRE 3GS21B
| NRE 3GS21B | |
|---|---|
 A new NRE 3GS21B locomotive in the Union Pacific scheme. | |
| Specifications | |
| Power type | Diesel-electric |
| Builder | National Railway Equipment (NREC) |
| Model | 3GS21B |
| Build date | December 2006 – Present |
| Total produced | 181 |
| Gauge | 4 ft 8 1⁄2 in (1,435 mm) |
| Prime mover | Cummins QSK19C (×3) |
| Engine type | Diesel engine |
| Aspiration | Turbocharger |
| Cylinders | 6 (×3) |
| Power output | 2,100 hp (1,570 kW) |
| Career | |
| Railroad(s) | See list |
The NRE 3GS21B is a low-emissions diesel switcher locomotive built by National Railway Equipment. It is powered by three Cummins QSK19C I6 engines with each one developing 700 horsepower (522 kW) and creating a total power output of 2,100 horsepower (1,570 kW). Having multiple engines instead of a single prime mover, a design referred to as a "Genset," reduces overall diesel emissions and improves fuel efficiency.[1] More than 150 of the 3GS21B Genset locomotives have been produced to date, with the majority of these units being manufactured at NREC's Mount Vernon shops in Southern Illinois.[2] In addition, one road slug model has also been produced.
Original Buyers
| Railroad | Quantity | Road numbers | Notes |
|---|---|---|---|
| BNSF Railway | | | |
| California Northern Railroad | | | |
| Canadian Pacific | | | |
| CSX Transportation | | | |
| Massachusetts Bay Transportation Authority | | | |
| Metro Stevedore[3] | | | |
| Neptune Bulk Terminals[4] | | | 808A is the only road slug model built to date. |
| Norfolk Southern | | | |
| Nova Chemicals | | | |
| National Railway Equipment | | | |
| Pacific Harbor Line | | | |
| Tacoma Rail | | | |
| Union Pacific | | | |
| United States Army | | | |
| San Diego and Imperial Valley Railroad | | | |
| Total | 182[6] | ||
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A brand new 3GS21B locomotive painted for the BNSF Railway.
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An NRE 3GS21B leads a Union Pacific train along street running trackage at Anaheim, California.
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Two brand new U.S. Army 3GS21B locomotives working at Fort Lewis, Washington.
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Brand new MBTA 3GS21B at South Station.
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MBTA 3GS21B on the Grand Junction Railroad.
References
- ↑ http://www.nationalrailway.com/nviro.asp
- ↑ Train Web: Gensets Gen-set switchers by National Railway Equipment.
- ↑ Metro Ports
- ↑ Neptune Terminals
- ↑ Tacoma Rail Locomotives Tacoma Rail Acquires Eco-friendly Locomotives.
- ↑ Train Web: Gensets Roster information on NREC 3GS21B engines.
External links
 RailPictures.Net – NRE 3GS21B photographs from RailPictures.Net. | |
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Railroad Picture Archives – Photographs of the NRE 3GS21B at Railroad Picture Archives. |
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Wikimedia Commons has media related to NRE 3GS21B locomotives. |
- National Railway Equipment – Official NRE Website
- National Railway Equipment – Official N-ViroMotive Product Page
- Train Web.Org - Genset Locomotive Rosters – Information and resource site for low-emission switcher locomotives built by National Railway Equipment.
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