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One of the most powerful electric locomotives ever built, it also is the most powerful (short term) single-frame locomotive ever built (currently [when?] its maximum short term power is limited to 12,000 horsepower (8,948 kW)); It has immense short term power with a tractive effort of 312 kN up to a speed of 140 km/h (87 mph). DB Class 151
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]
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 ...
The first ten units were originally numbered 7000-7009. 7000 was the first AC6000CW ever built. All were converted to AC4460CW units and renumbered to 6888-6968. They were classified as C44ACCCA. In 2023, all were rebuilt to C44ACM. 7510-7554 45 July-December 1998 7555-7579 25 January 2001 Convertible 7336-7405 70 November 1995-September 1996
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.
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.
Diagram of Priestman oil engine from The Steam engine and gas and oil engines (1900) by John Perry Petrol–electric Weitzer railmotor, first 1903, series 1906. The earliest recorded example of the use of an internal combustion engine in a railway locomotive is the prototype designed by William Dent Priestman, which was examined by William Thomson, 1st Baron Kelvin in 1888 who described it as ...
The MK5000C is a 5,000 hp (3.7 MW) North American diesel-electric locomotive developed by MK Rail.At the time of its introduction in 1994, the MK5000C was the most powerful single prime mover diesel-electric locomotive ever made, a title it would hold for only for one year until GE Transportation released its competing 6,000 hp (4.5 MW) AC6000CW model in 1995.