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The E6 was designed by the PRR's General Superintendent of Motive Power, Lines East, Alfred W. Gibbs, and his team.They produced an Atlantic of modern design, featuring a large and free-steaming boiler, outside Walschaert valve gear, piston valves on the cylinders, and a cast steel KW pattern trailing truck designed by the PRR's Chief Mechanical Engineer, William F. Kiesel, Jr.
Streamlined power cars and early experimental locomotives ... E6: 1939–1942: 91 A units, 26 B units: A1A-A1A: Dual EMD 567: 2,000 hp (1490 kW) E7: 1945–1949: 428 ...
Each engine drove its own electrical generator to power the traction motors. The E6 was the seventh model in a long line of passenger diesels of similar design known as EMD E-units. Compared with passenger locomotives made later by EMD, the noses of the E3, E4, E5, and E6 cab units had pronounced slants when viewed from the side. Therefore ...
The ALCO S-2 and S-4 are 1,000-horsepower (746 kW) diesel electric switcher locomotives produced by ALCO and Canadian licensee Montreal Locomotive Works (MLW). [1]Powered by turbocharged, 6-cylinder ALCO 539 diesel engines, the two locomotives differed mainly in their trucks: the S-2 had ALCO "Blunt" trucks; the S-4, AAR type A switcher trucks.
Models E3 through E6 had a sloping nose but with a protruding headlight, while models E7 through E9 used a less sloped (closer to vertical) style like the freight F-units. A patent of 1937 signed by several EMC engineers defined the styling. [5] Many older E-units were updated to newer styles.
The result was the K4 class 4-6-2 Pacific, which was designed under the supervision of PRR Chief of Motive Power J.T. Wallis, assisted by Chief Mechanical Engineer Alfred W. Gibbs and Mechanical Engineer Axel Vogt, as one of a pair of classes with the L1 class 2-8-2 Mikado, sharing the same boiler design and other features.
In standard form, the powertrain detail of the C4-based S4 was available with only one engine, a single turbocharged and intercooled version of Audi's 2.2-litre 20-valve inline five-cylinder engine This displaced 2,226 cubic centimetres (135.8 cu in) and was equipped with an advanced Bosch Motronic electronic engine control unit (ECU). [1]
Milwaukee Road class EF-1 - 30 two-unit boxcab sets (60 locomotives) built in 1915 by ALCO/GE, identical to EP-1 but for gearing and paint. In addition, the EP-1 units were converted to EF-1 specification in 1920.