NRE 3GS21B

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NRE 3GS21B
NRE 3GS21B UPY 2717 2.jpg
A new NRE 3GS21B locomotive in the Union Pacific scheme.
Type and origin
Power type Diesel-electric
Builder National Railway Equipment (NREC)
Model 3GS21B
Build date December 2006 (2006-12) – Present
Total produced 181
Specifications
Gauge 4 ft 8 12 in (1,435 mm)
Prime mover Cummins QSK19C (×3)
Engine type Diesel engine
Aspiration Turbocharger
Cylinders 6 (×3)
Performance figures
Power output 2,100 hp (1,570 kW)
Career
Operator(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[edit]

Railroad Quantity Road numbers Notes
BNSF Railway
72
1220-1292
California Northern Railroad
5
501-505
Canadian Pacific
2
2100-2101
CSX Transportation
16
1300-1316
Massachusetts Bay Transportation Authority
2
3248-3249
Metro Stevedore[3]
1
805
Neptune Bulk Terminals[4]
2
808-808A
808A is the only road slug model built to date.
Norfolk Southern
2
300-301
Nova Chemicals
1
9120
National Railway Equipment
7
2008-2009, 2011, 2013-2015, & 2020
Demonstration Units
Pacific Harbor Line
4
30-31 & 33-34
Tacoma Rail
1
2100[5]
Union Pacific
59
Y2701-Y2760
United States Army
7
6500-6506
San Diego and Imperial Valley Railroad
2
SDIY 701-702
Total 182[6]

References[edit]

  1. ^ http://www.nationalrailway.com/nviro.asp
  2. ^ Train Web: Gensets Gen-set switchers by National Railway Equipment.
  3. ^ Metro Ports
  4. ^ Neptune Terminals
  5. ^ Tacoma Rail Locomotives Tacoma Rail Acquires Eco-friendly Locomotives.
  6. ^ Train Web: Gensets Roster information on NREC 3GS21B engines.

External links[edit]

External images
RailPictures.Net – NRE 3GS21B photographs from RailPictures.Net.
Railroad Picture Archives – Photographs of the NRE 3GS21B at Railroad Picture Archives.