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Bo-Bo
B-B and Bo-Bo are the Association of American Railroads (AAR) and British classifications of wheel arrangement for railway locomotives with four axles in two individual bogies. They are equivalent to the B′B′ and Bo′Bo′ classifications in the UIC system. The arrangement of two, two-axled, bogies is a common wheel arrangement for modern electric and diesel locomotives. Bo-Bo Bo-Bo is the UIC indication of a wheel arrangement for railway vehicles with four axles in two individual bogies, all driven by their own traction motors. It is a common wheel arrangement for modern electric and diesel-electric locomotives, as well as power cars in electric multiple units. Most early electric locomotives shared commonalities with the steam engines of their time. These features included side rods and frame mounted driving axles with leading and trailing axles. The long rigid wheelbase and the leading and trailing axles reduced cornering stability and increased weight. The Bo-Bo con ...
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Indian Locomotive Class WAG-12
The Indian locomotive class WAG-12B is a class of 25 kV AC electric locomotives that was developed in 2017 by Alstom with technological collaboration with Indian Railways. The model name stands for broad gauge (W), Alternating Current (AC), Goods traffic (G) locomotive, 12000 hp (12). They entered trial service in 2019. A total of 268 WAG-12B have been built at Electric Locomotive Factory, Madhepura, Bihar, India. With a power output of 12,000 HP, the WAG 12 is twice as powerful as its immediate predecessor, WAG-9, and is among the most powerful freight locomotives in the world. The locomotive is being developed for deployment on the Dedicated Freight Corridors, where it will be used to haul freight trains weighing more than at speeds of to , essentially doubling the average speed of freight trains in the sector. History Origins The origins of WAG-12B can be traced back to 2006. When the Government of India approved the Dedicated Freight Corridor (DFC) project ...
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AAR Wheel Arrangement
The AAR wheel arrangement system is a method of classifying locomotive (or unit) wheel arrangements that was developed by the Association of American Railroads. Essentially a simplification of the European UIC classification, it is widely used in North America to describe Diesel locomotive, diesel and electric locomotives (including third-rail electric locomotives). It is not used for steam locomotives, which use the Whyte notation instead. The AAR system counts axles instead of wheels. Letters refer to powered axles, and numbers to unpowered (or idler) axles. "A" refers to one powered axle, "B" to two powered axles in a row, "C" to three powered axles in a row, and "D" to four powered axles in a row. "1" refers to one idler axle, and "2" to two idler axles in a row. A dash ("–") separates Bogie, trucks or wheel assemblies. A plus sign ("+") refers to articulation, either by connecting bogies with span bolsters or by connecting individual locomotives via solid drawbars instead of ...
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Railway Locomotive
A locomotive or engine is a rail transport vehicle that provides the motive power for a train. If a locomotive is capable of carrying a payload, it is usually rather referred to as a multiple unit, motor coach, railcar or power car; the use of these self-propelled vehicles is increasingly common for passenger trains, but rare for freight (see CargoSprinter). Traditionally, locomotives pulled trains from the front. However, push-pull operation has become common, where the train may have a locomotive (or locomotives) at the front, at the rear, or at each end. Most recently railroads have begun adopting DPU or distributed power. The front may have one or two locomotives followed by a mid-train locomotive that is controlled remotely from the lead unit. __TOC__ Etymology The word ''locomotive'' originates from the Latin 'from a place', ablative of 'place', and the Medieval Latin 'causing motion', and is a shortened form of the term ''locomotive engine'', which was first us ...
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China Railways HXD2
The HXD2 locomotives are a series of related locomotive classes built by CNR Datong Electric Locomotive and Alstom. The locomotives designs are based on the Alstom Prima electric locomotives, and are a product of a cooperation agreement signed between the two companies in 2004. All locomotives are intended for heavy freight work, including coal trains on the Datong Qinhuangdao line (Daqin Railway). The original HXD2 locomotives are twin unit Bo′Bo′+Bo′Bo′ vehicles whereas the HXD2B and HXD2C versions are single unit Co′Co′ machines. At the time of their construction the HXD2 and HXD2B locomotives were amongst the most powerful locomotives in the world. The HXD2C is similarly specified to the HXD2B but of reduced power, and with increased localisation of components for lower cost. The HXD2 was originally described as the DJ4-6000 class. Variants of the type were produced for railways other than China Railway: in 2010 Belarus state railways ordered a HXD2 twin ...
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JNR Class ED62
The is a Bo-1-Bo wheel arrangement DC electric locomotive type formerly operated in Japan from 1974 until 2002 by Japanese National Railways (JNR) and later by JR Freight. History The Class ED62 locomotives were created between 1974 and 1979 by modifying the 18 earlier JNR Class ED61 Bo-Bo electric locomotives with the addition of a center non-driven axle. Rebuilding was carried out at JNR's Nagano Works. The primary aim of rebuilding was to reduce the axle load (from 15 t to 13 t) for use on the Iida Line, where the class displaced vintage (English Electric) and JNR Class ED19 ( Westinghouse) locomotives, and later JNR Class EF10 locomotives. One highlight of the class's career was when ED62 15 hauled the Imperial Train on the Iida Line in 1979. It was also not uncommon to see ED62s close to Tokyo when they worked to Shin-Tsurumi Depot for examinations. Eight members of the class were still in service in 1987 when JNR was split into separate JR Group companies, and ED62 17 ...
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Japanese National Railways
The abbreviated JNR or , was the business entity that operated Japan's national railway network from 1949 to 1987. Network Railways As of June 1, 1949, the date of establishment of JNR, it operated of narrow gauge () railways in all 46 prefectures of Japan. This figure expanded to in 1981 (excluding Shinkansen), but later reduced to as of March 31, 1987, the last day of JNR. JNR operated both passenger and freight services. Shinkansen Shinkansen, the world's first high-speed railway was debuted by JNR in 1964. By the end of JNR in 1987, four lines were constructed: ; Tōkaidō Shinkansen: , completed in 1964 ; Sanyō Shinkansen: , completed in 1975 ; Tōhoku Shinkansen: , as of 1987 ; Jōetsu Shinkansen: , completed in 1982 Buses JNR operated bus lines as feeders, supplements or substitutions of railways. Unlike railway operation, JNR Bus was not superior to other local bus operators. The JR Bus companies are the successors of the bus operation of JNR. Ships JNR o ...
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Cardan Shaft
A drive shaft, driveshaft, driving shaft, tailshaft ( Australian English), propeller shaft (prop shaft), or Cardan shaft (after Girolamo Cardano) is a component for transmitting mechanical power and torque and rotation, usually used to connect other components of a drivetrain that cannot be connected directly because of distance or the need to allow for relative movement between them. As torque carriers, drive shafts are subject to torsion and shear stress, equivalent to the difference between the input torque and the load. They must therefore be strong enough to bear the stress, while avoiding too much additional weight as that would in turn increase their inertia. To allow for variations in the alignment and distance between the driving and driven components, drive shafts frequently incorporate one or more universal joints, jaw couplings, or rag joints, and sometimes a splined joint or prismatic joint. History The term ''driveshaft'' first appeared during the mid-19th cent ...
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Diesel-hydraulic Locomotive
A diesel locomotive is a type of railway locomotive in which the prime mover 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. Early 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 transmissions, the more powerful diesel engines required the development of new forms of transmission. This is because clutches would need to be very large at these power levels and would not fit in a standard -wide locomotive frame, or wear too quickl ...
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Crowcombe 832 Light Engine To Bishops Lydeard
Crowcombe is a village and civil parish under the Quantock Hills in Somerset, England, southeast of Watchet, and from Taunton. The village has a population of 489. The parish covers the hamlets of Crowcombe Heathfield, Flaxpool, Halsway, Lawford and Triscombe. The village is on the route of the Samaritans Way South West. History The name Triscombe is believed to derive from the Old English words and . The first documentary evidence of the village is by Æthelwulf of Wessex in 854, where it was spelt 'Cerawicombe'. At that time the manor belonged to Glastonbury Abbey. Later Gytha Thorkelsdóttir, wife of Earl Godwin, gave it to the monks of Winchester to make amends for her husband's "treacherous abuses of divers monastic institutions". The Domesday Book of 1086 lists the village as 'Crawcombe', which is believed to come from the Old English words ''craw'' and ''cumb''. The parish of Crowcombe was part of the Williton and Freemanners Hundred. The medieval cross of red s ...
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SS4 7185 20111102
SS4 may refer to: * SS-4 Sandal, a Soviet theatre ballistic missile * Ambrosini SS.4, an Italian fighter aircraft prototype * Pindad SS4, an Indonesian battle rifle in development * SS 4, an Italian state highway, linking Rome to the Adriatic sea * Super Select Super Select is the brand name of a four-wheel drive system produced by Mitsubishi Motors, used worldwide except for North America, where it was initially known as Active-Trac. It was first introduced in 1991 with the then-new second generation of ..., a four-wheel drive system produced by Mitsubishi * , a submarine of the United States Navy * Super Saiyan 4, a fictional transformation from the Dragon Ball series {{Letter-NumberCombDisambig ...
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Prima (locomotive)
Prima is a family of railway diesel and electric locomotives built by Alstom. During the late 1990s, manufacture of the type had commenced; by 2008, Alstom had reportedly sold 1,750 Prima locomotives. In 2009, the second generation Prima II was launched. During 2013, the Prima H3 diesel/battery hybrid locomotive was launched. First generation During 1998, the French national railway operator, SNCF, placed a large order with train manufacturer Alstom for 120 electric locomotives, which was later on increased to 240, to perform both domestic and international freight services. The company decided to develop a new modular platform that would accommodate the requirements not only of the existing SNCF order, but to also comply with European interoperability standards, as well as a high degree of flexibility as to meet the divergent needs of different operators, potentially increasing the type's international appeal. In this manner, the SNCF order can be attributed with the extension ...
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