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EMD DDA40X
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. It is the most powerful diesel–electric locomotive model ever built on a single frame, having two 16-645E3A diesel prime movers. Union Pacific has marked DD40X on the cab exteriors, while EMD literature inconsistently refers to this model as either DD-40X or DDA40X. UP's DDA40X locomotives were the culmination of the company's experiments with extremely powerful locomotives that began with its gas turbine–electric locomotives and DD35s. For manufacturer EMD, the construction of the world's most powerful single frame locomotive was a sign of the company's dominance of the North American diesel locomotive market, with only GE Transportation an equal competitor. The DDA40X also pioneered a number of new technologies that would go on to be incorporated in future EMD designs. Ultimately, UP did not continue with exceptionally powerful ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Diesel Locomotive
A diesel locomotive is a type of railway locomotive in which the prime mover (locomotive), power source is a diesel engine. Several types of diesel locomotives have been developed, differing mainly in the means by which mechanical power is conveyed to the driving wheels. The most common are diesel–electric locomotives and diesel–hydraulic. Early internal combustion engine, internal combustion locomotives and railcars used kerosene and gasoline as their fuel. Rudolf Diesel patented his first compression-ignition engine in 1898, and steady improvements to the design of diesel engines reduced their physical size and improved their power-to-weight ratios to a point where one could be mounted in a locomotive. Internal combustion engines only operate efficiently within a limited power band, and while low-power gasoline engines could be coupled to mechanical transmission (mechanics), transmissions, the more powerful diesel engines required the development of new forms of transmiss ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Union Pacific Centennial
The EMD DDA40X is a 6,600 hp (4,943 kW) AAR wheel arrangement#D-D, D-D locomotive, built by Electro-Motive Diesel, EMD from 1969 to 1971 exclusively for the Union Pacific Railroad. It is the most powerful diesel locomotive#Diesel–electric, diesel–electric locomotive model ever built on a single frame, having two 16-645E3A Diesel engine, diesel prime mover (locomotive), prime movers. Union Pacific has marked DD40X on the cab exteriors, while EMD literature inconsistently refers to this model as either DD-40X or DDA40X. UP's DDA40X locomotives were the culmination of the company's experiments with extremely powerful locomotives that began with its Union Pacific GTELs, gas turbine–electric locomotives and DD35s. For manufacturer EMD, the construction of the world's most powerful single frame locomotive was a sign of the company's dominance of the North American diesel locomotive market, with only GE Transportation an equal competitor. The DDA40X also pioneered a num ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cowl Unit
A cowl is an item of clothing consisting of a long, hooded garment with wide sleeves, often worn by monks. It was developed during the Early Middle Ages. The term may have originally referred to the hooded portion of a cloak, though contemporary usage refers to an entire closed garment. A cowl is traditionally bestowed upon the monk at the time of making solemn, or lifetime, profession (religious), profession. Today, it is worn primarily by most Catholic and Anglican monks when participating in liturgy, liturgical services. Description Developed during the Early Middle Ages, the cowl became the formal garment for those in monastic life. Both St. Jerome and John Cassian refer to it as part of a monk's dress. In modern times, it is worn over the habit during liturgical services. Originally, ''cowl'' may have referred simply to the hooded portion of a cloak. In contemporary usage, however, it is distinguished from a cloak or cape (''cappa'') by the fact that it refers to an entire ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
EMD FP45
The EMD FP45 is a cowl unit type of C-C diesel locomotive produced in the United States by General Motors Electro-Motive Division (EMD). It was produced beginning in 1967 at the request of the Atchison, Topeka and Santa Fe Railway, which did not want its prestigious ''Super Chief/El Capitan'' and other passenger trains pulled by freight style hood unit locomotives, which have external walkways. History and development The EMD SDP45 performed well in passenger service, but the Santa Fe Railway felt its utilitarian appearance was unsuitable for its passenger trains. EMD therefore designed a lightweight "cowl" body to cover the locomotive, though it did not, as in earlier cab units, provide any structural strength, which remained in the frame. The cowl provided sleeker looks, better aerodynamics at speed, and allowed the crew to enter the engine compartment en route for diagnostics and maintenance. Final drive gear ratio for passenger service was 57:20. Orders Santa Fe purchas ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
EMD F45
The EMD F45 is a C-C cowled diesel-electric locomotive built by General Motors Electro-Motive Division between 1968 and 1971. Power was provided by an EMD 645E3 20-cylinder engine which generated . Design After sponsoring the development of the FP45 passenger locomotive, the Santa Fe requested a similar freight locomotive from Electro-Motive. Where the FP45 was an SDP45 wrapped in a full-width cowl carbody, the new F45 was essentially an SD45 given the same treatment. Where the Santa Fe requested a full-width carbody for aesthetics, the Great Northern saw an opportunity to protect crews from the dangers of winter operation in northern climates. Original owners The Santa Fe ordered two lots of twenty each, for 1968 delivery. The FP45s were delivered in Santa Fe's red, yellow and silver ''warbonnet'' colors, the forty F45s came in the blue and yellow freight colors. The second order of F45s were equipped with steam lines so that they could be used as trailing units on ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cab (locomotive)
The cab, crew compartment or driver's compartment of a locomotive, or a Passenger car (rail)#Self-propelled passenger equipment, self-propelled rail vehicle, is the part housing the train driver, Fireman (steam engine), fireman or secondman (if any), and the controls necessary for the locomotive or self-propelled rail vehicle's operation. Cab locations On steam locomotives, the cab is normally located to the rear of the Firebox (steam engine), firebox, although steam locomotives have sometimes been constructed in a cab forward configuration. Camelback locomotive, camelback locomotives often had two cabs; one for the fireman at the rear of the boiler, and one for the engineer on the side of the boiler. Camelback locomotives were built with this configuration to accommodate wider fireboxes. The cab, or crew or driver's compartment of a Diesel locomotive, diesel or electric locomotive will usually be found either inside a cabin attached to a hood unit or cowl unit locomotive, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dynamic Braking
Dynamic braking is the use of an electric traction motor as a generator when slowing a vehicle such as an electric or diesel-electric locomotive. It is termed " rheostatic" if the generated electrical power is dissipated as heat in brake grid resistors, and " regenerative" if the power is returned to the supply line. Dynamic braking reduces wear on friction-based braking components, and regeneration lowers net energy consumption. Dynamic braking may also be used on railcars with multiple units, light rail vehicles, electric trams, trolleybuses, and electric and hybrid electric automobiles. Principle of operation Converting electrical energy to the mechanical energy of a rotating shaft (electric motor) is the inverse of converting the mechanical energy of a rotating shaft to electrical energy (electric generator). Both are accomplished through the interactions of armature windings with a (relatively) moving external magnetic field, with the armature connected to an electrical ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
EMD SD45X
EMD may refer to: Finance and commerce * Earnest money deposit, in the United States, a security deposit, especially for real estate Medicine * Electromagnetic diaphragm * Electromechanical dissociation * Emergency medical dispatcher * Enamel matrix derivative * Esophageal motility disorder * Merck Group, known as EMD in Canada and the United States, a German pharmaceutical company Science and technology * Electrolytic manganese dioxide * Emerin * Empirical mode decomposition * Equilibrium mode distribution * ReadyBoost, disk-caching software Transport * East Midlands Parkway railway station, in England * Electro-Motive Diesel, an American locomotive manufacturer * Electronic Miscellaneous Document in the airline industry * Emerald Airport, in Queensland, Australia Other uses * Schneider Electric EMD an Armenian-Serbian electric company * EMD (band), a Swedish band * Earth mover's distance * European Marketing Distribution European Marketing Distribution (EMD) is ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
EMD Dash-2
The EMD Dash 2 is a line of diesel-electric locomotives introduced by General Motors Corporation, General Motors' Electro-Motive Diesel, Electro-Motive Division (EMD) on January 1, 1972. Designations of these models were those of the former models with "-2" added (e.g., the SD40 was replaced by the SD40-2). They retained the basic specifications of the earlier models in terms of power output and most other features, but introduced a number of improvements to the locomotives' internal systems, specifically the electrical systems and the trucks of the locomotives. These were intended to improve availability, efficiency, and ease of maintenance. One major improvement was a modularized electrical control cabinet, allowing maintenance by unit replacement and the use of common parts. These concepts were first tested on the EMD DDA40X, DDA40X. Changes Minor externally visible changes common across the whole line include the following: * Modified bogie, trucks with damping struts. Four ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
EMD E Units
EMD E-units were a line of passenger train streamliner diesel locomotives built by the General Motors Electro-Motive Division (EMD) and its predecessor the Electro-Motive Corporation (EMC). Final assembly for all E-units was in La Grange, Illinois. Production ran from May 1937, to December, 1963. The name ''E-units'' refers to the model numbers given to each successive type, which all began with E. The E originally stood for eighteen hundred horsepower (1800 hp = 1300 kW), the power of the earliest model, but the letter was kept for later models of higher power. The predecessors of the E-units were the EMC 1800 hp B-B locomotives built in 1935. These had similar power and mechanical layouts to the E-units, but in boxcab bodies on AAR type B two-axle trucks. EMC also introduced the TA model in 1937, selling six to the Rock Island. This had similar carbody styling, but otherwise had more in common with UP M-10001, M-10002, and M-10003 to M-10006, in that it was ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Salt Lake City
Salt Lake City, often shortened to Salt Lake or SLC, is the capital and most populous city of the U.S. state of Utah. It is the county seat of Salt Lake County, the most populous county in the state. The city is the core of the Salt Lake City Metropolitan Statistical Area (MSA), which had a population of 1,257,936 at the 2020 census. Salt Lake City is further situated within a larger metropolis known as the Salt Lake City–Ogden–Provo Combined Statistical Area, a corridor of contiguous urban and suburban development stretched along a segment of the Wasatch Front, comprising a population of 2,746,164 (as of 2021 estimates), making it the 22nd largest in the nation. With a population of 199,723 in 2020, it is the 111th most populous city in the United States. It is also the central core of the larger of only two major urban areas located within the Great Basin (the other being Reno, Nevada). Salt Lake City was founded on July 24, 1847 by settlers led by Brigham Young ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
