The NRE 3GS21B is a low-emissions

diesel Diesel may refer to: * Diesel engine, an internal combustion engine where ignition is caused by compression * Diesel fuel, a liquid fuel used in diesel engines * Diesel locomotive, a railway locomotive in which the prime mover is a diesel engin ...

genset locomotive A genset locomotive is a locomotive in which a number of smaller diesel engines are used rather than a single large engine. The term is short for "generator set." Aspects of gensets A genset uses one to three small diesel engines to provide powe ...

built by

National Railway Equipment National Railway Equipment Company is an American railroad equipment rebuilding, leasing, and manufacturing company, headquartered in Mt. Vernon, Illinois. NREC sells new and rebuilt locomotives to railroad companies worldwide, with an emphasis ...

(NRE). Instead of a single prime mover, the NRE genset locomotive is powered by three separate

Cummins Cummins Inc. is an American multinational corporation that designs, manufactures, and distributes engines, filtration, and power generation products. Cummins also services engines and related equipment, including fuel systems, controls, air ...

QSK19C engines providing a total power output of . Each engine could be individually started or shut off depending on load reducing overall diesel emissions and improving

fuel efficiency Fuel efficiency is a form of thermal efficiency, meaning the ratio of effort to result of a process that converts chemical potential energy contained in a carrier (fuel) into kinetic energy or work. Overall fuel efficiency may vary per device, wh ...

. More than 150 of the 3GS21B genset locomotives have been produced to date, with the majority of these units being manufactured at NRE's

Mount Vernon Mount Vernon is an American landmark and former plantation of Founding Father, commander of the Continental Army in the Revolutionary War, and the first president of the United States George Washington and his wife, Martha. The estate is on ...

shops in

Southern Illinois Southern Illinois, also known as Little Egypt, is the southern third of Illinois, principally along and south of Interstate 64. Although part of a Midwestern United States, Midwestern state, this region is aligned in culture more with that of th ...

. In addition, three

road slug In railroading, a slug is a version of a diesel-electric locomotive which lacks a prime mover, and often a cab. It derives the electrical power needed to operate its traction motors and motor controls from a fully-powered mother locomotive. ...

models have also been produced.

Flexibility

Because the engines are modular, flexibility is obtained: *If one engine fails, the others can continue at reduced power. *If a lower axle load is needed, one engine can be left off. *When reduced power is needed, one or more of the engines can be turned off, saving fuel and wear and tear. *The QSK19C engine is common to the four variants of the NRE 3GS21C locomotive. *The QSK19C engine is also widely used for non-railway applications, and spare parts are readily available.

Original buyers

Image:BNSF 1291.jpg, A brand new 3GS21B locomotive painted for the

BNSF Railway BNSF Railway is one of the largest freight railroads in North America. One of seven North American Class I railroads, BNSF has 35,000 employees, of track in 28 states, and nearly 8,000 locomotives. It has three transcontinental routes that ...

. Image:NRE 3GS21B UPY 2733.jpg, An NRE 3GS21B leads a

Union Pacific The Union Pacific Railroad , legally Union Pacific Railroad Company and often called simply Union Pacific, is a freight-hauling railroad that operates 8,300 locomotives over routes in 23 U.S. states west of Chicago and New Orleans. Union Paci ...

train along

street running A street running train is a train which runs on a track built on public streets. The rails are embedded in the roadway, and the train shares the street with other users, such as pedestrians, cars and cyclists, thus often being referred to as r ...

trackage at

Anaheim, California Anaheim ( ) is a city in northern Orange County, California, part of the Los Angeles metropolitan area. As of the 2020 United States Census, the city had a population of 346,824, making it the most populous city in Orange County, the 10th-most p ...

. Image:Army nviro locos.jpg, Two brand new

U.S. Army The United States Army (USA) is the land service branch of the United States Armed Forces. It is one of the eight U.S. uniformed services, and is designated as the Army of the United States in the U.S. Constitution.Article II, section 2, cl ...

3GS21B locomotives working at

Fort Lewis, Washington Fort Lewis was a United States Army post from 1917 to 2010 located south-southwest of Tacoma, Washington. Fort Lewis was merged with McChord Air Force Base on 1 February 2010 to form Joint Base Lewis–McChord. Fort Lewis, named after Meriweth ...

. Image:MBTA 3GS21B 3248 at South Station, December 2009.jpg, Brand new MBTA 3GS21B at

South Station South Station, officially The Governor Michael S. Dukakis Transportation Center at South Station, is the largest railroad station and intercity bus terminal in Greater Boston and New England's second-largest transportation center after Logan In ...

. Image:MBTAGenset3248.JPG, MBTA 3GS21B on the

Grand Junction Railroad Grand may refer to: People with the name * Grand (surname) * Grand L. Bush (born 1955), American actor * Grand Mixer DXT, American turntablist * Grand Puba (born 1966), American rapper Places * Grand, Oklahoma * Grand, Vosges, village and commun ...

References

External links

National Railway Equipment
– Official N-ViroMotive Product Page {{Green Locos B-B locomotives NRE locomotives Railway locomotives introduced in 2006 Diesel-electric locomotives of the United States EPA Tier 2-compliant locomotives of the United States Rebuilt locomotives Standard gauge locomotives of the United States

Flexibility

Original buyers

See also

References

External links