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The EMD DDA40X is a 6,600 hp (4,943 kW) D-D locomotive, built by EMD from 1969 to 1971 exclusively for the Union Pacific Railroad. [1] It is the most powerful diesel–electric locomotive model ever built on a single frame, having two 16-645E3A diesel prime movers. [2]
Dual power electro-diesel locomotive Co'Co' 114 tonnes (126 short tons) - 126 tonnes (139 short tons) 500 kilonewtons (112,500 lbf) 7,000 kilowatts (9,387.15 hp) Stadler Euro 9000 European Loc Pool 2019 302– Stadler Rail: 2020– Dual power electro-diesel locomotive Co'Co' 123 tonnes (136 short tons) 500 kilonewtons (112,404 lbf)
The AC6000CW is a 6,000-horsepower (4,500 kW) diesel electric locomotive built between 1995 and 2001 by GE Transportation. It is among the world's most powerful single-engined diesel locomotives. The locomotive was designed for extremely high horsepower needs, such as pulling heavy coal and ore trains.
Union Pacific 6936 is an EMD DDA40X locomotive built for the Union Pacific Railroad ().Previously a part of UP's heritage fleet, 6936 was for several decades the last remaining operational "Centennial" type, and thus the largest operational diesel-electric locomotive in the world.
They are unique in that they are actually two power units on a single 98-foot-long (30 m) frame, and are noted as being the largest diesel locomotives in the world. The locomotives weighed 542,432 lb (246,043 kg) and utilized two EMD 645E3A V-16 diesel engines, each rated at 3,300 hp (2,500 kW), for a combined rating of 6,600 hp (4,900 kW ...
Evolution of the American Diesel Locomotive. Railroads Past and Present. Bloomington, Indiana: Indiana University Press. ISBN 978-0-253-34863-0. Marre, Louis A. (1995). Diesel Locomotives: The First 50 Years: A Guide to Diesels Built Before 1972. Railroad Reference Series. Waukesha, Wisconsin: Kalmbach Publishing. ISBN 978-0-89024-258-2.
Most (except the electrics, the switchers, the AC6000CW, and the Evolution series) are powered by various versions of GE's own FDL diesel prime mover, based on a Cooper Bessemer design and manufactured at Grove City, Pennsylvania. GE is one of the largest locomotive manufacturing companies.
The ALCO Century 855 was a model of 5,500 hp (4,101 kW) diesel-electric locomotive built in 1964 by the American Locomotive Company for the Union Pacific.The locomotive was notable for being ALCO's most powerful diesel-electric locomotive and, at the time, the most powerful diesel locomotive ever built, [1] being surpassed by the 6,600-horsepower (4,922-kilowatt) EMD DDA40X in April 1969.