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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]
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 9,000 kilowatts (12,069 hp) [8]); 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
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 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.
Union Pacific’s No. 4014 steam locomotive is a massive 132-foot long engine that has been touring the rails of middle America since August. See ‘Big Boy,’ world’s largest steam locomotive ...
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.
Twenty-five Big Boy locomotives, which weigh 1.2 million pounds and are 130 feet long, were completed for Union Pacific in 1941. No. 4014 then drove 1,031,205 miles and was in service for 20 years ...