NRE 2GS12B
| NRE 2GS12B | |
|---|---|
standard gauge | |
| Wheel diameter | 40 in (1,000 mm) |
| Height | 15.67 ft (4.78 m) |
| Loco weight | 246,000 lb (112,000 kg) |
| Fuel type | Diesel |
| Fuel capacity | 1,600 US gal (6,100 L; 1,300 imp gal) |
| Lubricant cap. | 30 US gal (110 L; 25 imp gal) |
| Coolant cap. | 28 US gal (110 L; 23 imp gal) |
| Sandbox cap. | 32 cu ft (0.91 m3) |
| Prime mover | Cummins QSK15 (×2) |
| Engine type | Straight-six engine |
| Generator | Industrial Motor Power 740RDL |
| Cylinders | 6 (×2) |
| Gear ratio | 62:15 |
| Performance figures | |
|---|---|
| Power output | 1,200 hp (890 kW) total (600 hp (450 kW) per engine) |
| Tractive effort: | |
| • Starting | 85,520 lbf (380,400 N) |
| • Continuous | 56,053 lbf (249,340 N) @ 4.3 mph (6.9 km/h) |
The NRE 2GS12B is a low-emissions diesel
Development
In 2004, the
Looking to demonstrate a new Tier 4 compliant switcher locomotive, the Bay Area Air Quality Management District received a $529,810 grant from the California Air Resources Board (ARB) Air Quality Improvement Program.[3]: 3 The district selected National Railway Equipment Company (NRE) to build the locomotive, which would be tested in the Richmond Pacific Railroad rail yard in Richmond, California.[3]: 3
The ARB approved NRE's final design of the prototype 2GS12B locomotive in April 2012.
NRE built the prototype 2GS12B locomotive at its Dixmoor, Illinois facility.[3]: 4 A used EMD GP7 switcher locomotive was used as a donor unit, stripped to its frame, repowered with the new power plants, and equipped with a new cab.[3]: 5 The locomotive rolled off the production line in December 2012 and was delivered to the Richmond Pacific Railroad in March 2013.[3]: 4
As a requirement of the ARB funding, the locomotive was used for three emissions tests: a baseline test completed in October 2013, a test after 1,500 hours of use completed in May 2014, and a final test after 3,000 hours of use completed in October 2014. The ARB verified the prototype locomotive as passing the Tier 4 standard.[3]: 4
Following the success of the prototype locomotive, Amtrak selected NRE to rebuild some of its existing EMD SW1000R switcher locomotives into 2GS12B switchers. The SW1000R fleet was initially built as EMD SW9 switchers and had been rebuilt in 1994 by NRE.[4] Amtrak received the first two 2GS12B in 2014. Amtrak designates these units as 2GS12B-R with the "-R" representing that the locomotive was rebuilt from an older donor locomotive. Satisfied with the performance of the first two locomotives, Amtrak had NRE convert two more SW1000R units into 2GS12B-R locomotives, which were delivered in 2018.
Original buyers
| Railroad | Quantity | Road numbers | Notes |
|---|---|---|---|
| Amtrak | 4
|
597, 599, 792, 793
|
All rebuilt from SW1000R locomotives |
National Railway Equipment
|
1
|
2015
|
2015 is a demonstrator used on Richmond Pacific Railroad |
| Total | 5 |
References
- ^ "NRE 2GS12B Flyer" (PDF). National Railway Equipment Company. August 2018.
- ^ "NRE Tier 4 Flyer" (PDF). National Railway Equipment Company. March 2018.
- ^ a b c d e f g h i j k Construction and demonstration of an NRE Tier 4 Genset Locomotive (PDF) (Report). National Railway Equipment Company, California Air Resources Board. May 2015. Retrieved June 18, 2020.
- ^ "Amtrak Locomotive and Car Notes". September 2, 2012. Retrieved June 18, 2020.
External links
- National Railway Equipment Product Page