The MPI MP20B is a diesel locomotive

Diesel locomotive

A diesel locomotive is a type of railroad locomotive in which the prime mover is a diesel engine, a reciprocating engine operating on the Diesel cycle as invented by Dr. Rudolf Diesel...

 designed and built by Motive Power in Boise, Idaho

Boise, Idaho

Boise is the capital and most populous city of the U.S. state of Idaho, as well as the county seat of Ada County. Located on the Boise River, it anchors the Boise City-Nampa metropolitan area and is the largest city between Salt Lake City, Utah and Portland, Oregon.As of the 2010 Census Bureau,...

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Specifications

It has a 2,000HP

Horsepower

Horsepower is the name of several units of measurement of power. The most common definitions equal between 735.5 and 750 watts.Horsepower was originally defined to compare the output of steam engines with the power of draft horses in continuous operation. The unit was widely adopted to measure the...

 MTU-Detroit Diesel 12V4000 Engine. It weighs approximately 277,000 lbs. and is 59' 2" long. It has a maximum speed of 70 mph. It also includes a B-B wheel arrangement and an optional dynamic brake

Dynamic braking

Dynamic braking is the use of the electric traction motors of a railroad vehicle as generators when slowing the Locomotive. It is termed rheostatic if the generated electrical power is dissipated as heat in brake grid resistors, and regenerative if the power is returned to the supply line...

. It includes a continuous tractive effort of 55,000 lbs and a starting tractive effort of 85,000 lbs.

Owners

Owner	Built	Number
Pacific Harbor Line	2008	2
New Jersey Transit	2008	5
Union Pacific Union Pacific Railroad The Union Pacific Railroad , headquartered in Omaha, Nebraska, is the largest railroad network in the United States. James R. Young is president, CEO and Chairman....	2008	13