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The SD40T-2 is a model of 
This locomotive model was purchased by the
diesel-electric locomotive
A diesel locomotive is a type of railway locomotive in which the prime mover is a diesel engine. Several types of diesel locomotives have been developed, differing mainly in the means by which mechanical power is conveyed to the driving wheels ...
built by General Motors Electro-Motive Division
Progress Rail Locomotives, doing business as Electro-Motive Diesel (EMD), is an American manufacturer of diesel-electric locomotives, locomotive products and diesel engines for the rail industry. The company is owned by Caterpillar through its su ...
in the United States. The SD40T-2 is equipped with a 16-cylinder EMD 645E3
The EMD 645 is a family of diesel engines that was designed and manufactured by the Electro-Motive Division of General Motors. While the 645 series was intended primarily for locomotive, marine and stationary engine use, one 16-cylinder versi ...
diesel engine producing . 312 SD40T-2s were built for three railroads in the United States between April 1974 and July 1980. This locomotive and the SD45T-2 are popularly called tunnel motors, but EMD's term is SD40-2
The EMD SD40-2 is a C-C diesel-electric locomotive built by EMD from 1972 to 1989.
The SD40-2 was introduced in January 1972 as part of EMD's '' Dash 2'' series, competing against the GE U30C and the ALCO Century 630. Although higher-horsepowe ...
with "cooling system modifications" because they were designed for better engine cooling in mountainous areas. The difference between this locomotive and its non-tunnel motor cousin, the SD40-2, are the radiator intakes and radiator fan grills located at the rear of the locomotive.
This locomotive model was purchased by the Denver and Rio Grande Western Railroad
The Denver & Rio Grande Western Railroad , often shortened to ''Rio Grande'', D&RG or D&RGW, formerly the Denver & Rio Grande Railroad, was an American Class I railroad company. The railroad started as a narrow-gauge line running south from De ...
, the Southern Pacific Railroad
The Southern Pacific (or Espee from the railroad initials- SP) was an American Class I railroad network that existed from 1865 to 1996 and operated largely in the Western United States. The system was operated by various companies under the ...
, and its subsidiary Cotton Belt
The Cotton Belt is a region of the Southern United States where cotton was the predominant cash crop from the late 18th century into the 20th century.
. Southern Pacific's version has a fuel tank and is long. Rio Grande's version has a smaller fuel tank.
Original purchasers
References
External links
* {{DEFAULTSORT:Emd Sd40t-2 SD40T-2 C-C locomotives Diesel-electric locomotives of the United States Railway locomotives introduced in 1974 Freight locomotives Standard gauge locomotives of the United States fi:EMD SD40#EMD SD40T-2