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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]
Most powerful (continuous) single-frame locomotive in Europe. Union Pacific 9000 class: Union Pacific: 9000-9087 American Locomotive Company: 1926-1930 Steam 4-12-2: 355 tonnes (391 short tons) 97,664 pounds-force (434 kN) 4,750 horsepower (3,542 kW) — Union Pacific Coal GTELs: Union Pacific: 80 (later 8080) Union Pacific Omaha Shops 1961
The Union Pacific Railroad (reporting marks UP, UPP, UPY) is a Class I freight-hauling railroad that operates 8,300 locomotives over 32,200 miles (51,800 km) routes in 23 U.S. states west of Chicago and New Orleans.
[1] 838: December 1944 American Locomotive Company (ALCO) FEF-3 4-8-4 In storage as source of spare parts Union Pacific Railroad, Cheyenne, Wyoming: 844: December 1944 American Locomotive Company (ALCO) FEF-3 4-8-4 Operational Union Pacific Railroad, Cheyenne, Wyoming: 1242: T-57 4-6-0 Static display 1243: October 1890 T-57 4-6-0 Static display ...
The Union Pacific Railroad's M-10003, M-10004, M-10005, and M-10006 were four identical streamlined 2-car power car diesel-electric train sets delivered in May, June, and July 1936 from Pullman-Standard, with prime movers from the Winton Engine Corporation of General Motors and General Electric generators, control equipment and traction motors.
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.
GE diagram of a turbine locomotive. Union Pacific operated the largest fleet of gas turbine–electric locomotives (GTELs) of any railroad in the world. The prototype, UP 50, was the first in a series built by General Electric for Union Pacific's long-haul cargo services and marketed by the Alco-GE partnership until 1953. The prototype was ...
The Union Pacific Railroad bought the first A-B-A set, which was delivered in December 1945. [1] Subsequent engine troubles and a nine-month strike at the Beloit plant made it difficult to get repeat orders. [1] The largest order came in 1947, when the Pennsylvania Railroad ordered 16 three-unit A-B-A sets. [1]