MPI MP21B

The MPI MP21B is a low-emissions diesel switcher locomotive built by MotivePower Industries. 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). One MP21B locomotive has been produced to date,[2] currently operated by Amtrak.[1]

MPI MP21B
Type and origin
Power typeDiesel-electric
BuilderMotivePower Ind.
ModelMP21B
Build date2008 (2008) – Present
Total produced1
Specifications
Gauge4 ft 8 1⁄2 in (1,435 mm)
Prime moverCummins QSK19C (×3)
Engine typeStraight-six engine
AspirationTurbocharger
CylindersI6 (×3)
Performance figures
Power output2,100 hp (1,570 kW)
Career
OperatorsAmtrak[1]

References
  1. "Amtrak & Amtrak California (AMTR & CDTX)". Green Rail News. Retrieved 7 October 2010.
  2. "MotivePower | Wabtec Corporation". www.wabtec.com.
  • Genset Locomotive Rosters – Information and resource site for low-emission switcher locomotives built by Motive Power Industries.
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