MPI MP20B
Type and origin
Power typeDiesel-electric
BuilderMotivePower
ModelMP20B
Build date2007-2008
Total produced21
Specifications
Configuration:
​
 • UICB-B
Gauge4 ft 8+1⁄2 in (1,435 mm)
Length59 ft 2 in (18.03 m)
Loco weight277,000 lb (126,000 kg)
Prime moverMTU-Detroit Diesel 12V4000
Caterpillar 3516C
Performance figures
Maximum speed70 mph (113 km/h)
Power output2,000 hp (1,490 kW)
Tractive effort85,000 lbf (380 kN) starting
55,000 lbf (240 kN) continuous

The MPI MP20B is a diesel-electric locomotive designed and built by MotivePower in Boise, Idaho.

Specifications

It has a 2,000 hp (1,490 kW) MTU-Detroit Diesel 12V4000 engine. It weighs approximately 277,000 lb and is 59 ft 2 in long. It has a maximum speed of 70 mph (113 km/h). It also includes a B-B wheel arrangement and an optional dynamic brake. It includes a continuous tractive effort of 55,000 lbf (240,000 N) and a starting tractive effort of 85,000 lbf (380,000 N).[1]

Union Pacific MP20Bs were powered by a Caterpillar 3516C.[2]

Owners

Owner Built Number Notes
Pacific Harbor Line[3] 2008 2
New Jersey Transit[4][5] 2008 5 Rebuilt from EMD GP40FH-2s
Union Pacific[6] 2008 13 Rebuilt from EMD GP50s[2]

References

  1. ^ MPE-X Low Emissions Locomotives MotivePower
  2. ^ a b UP receives cool Cats from Boise Trains July 2007 page 24
  3. ^ "Pacific Harbor Line". The Diesel Shop. Retrieved 7 October 2010.
  4. ^ "New Jersey Transit Fleet". The Diesel Shop. Retrieved 7 October 2010.
  5. ^ MotivePower/Wabtec Green Rail News
  6. ^ "UP Diesel Locomotive Roster, UP Yard Switch Roster, Part 3". UtahRails.net. Retrieved 7 October 2010.


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