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Road Switcher Locomotive
A road switcher locomotive is a type of railroad locomotive designed to both haul railcars in mainline service and shunt them in railroad yards. Both type and term are North American in origin, although similar types have been used elsewhere. A road switcher must be able to operate and have good visibility in both directions. As a road engine, a road switcher must be able to operate at road speeds, with suitable power and cooling capacity. It has high-speed road trucks rather than low-speed switcher only trucks. Modern road trucks are always equipped with "frictionless" roller bearings, whereas switcher trucks were almost always equipped with "friction" plain bearings, until plain bearings were outlawed in interchange service on both railcars and locomotives. Overview For the reasons given above, road switchers are generally hood units. The set-back cab of a hood unit provides more safety in the event of a collision at speed than most switcher locomotive designs, and the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
ALCO RS-2
The ALCO RS-2 is a B-B diesel-electric locomotive built by the American Locomotive Company (ALCO) from 1946 to 1950. ALCO introduced the model after World War II as an improvement on the ALCO RS-1. Between 1946 and 1950, 377 examples of the RS-2 were built, primarily for American and Canadian customers. ALCO discontinued the RS-2 in 1950 in favor of the very similar RS-3, which was significantly more popular. Several examples have been preserved. Design and development The RS-2 was a further development of the road switcher concept. It had more horsepower than the RS-1, to better meet the needs of heavy road service. Externally, the RS-2 bodywork was more rounded, while mechanically the new 244 engine was introduced. A turbocharged four stroke V12 with a bore and stroke developing 1,500 (later 1,600) hp at 1,000 rpm, it had a smaller cylinder, higher cylinder speed design than the 539 used in the RS-1. Production of the RS-2 was delayed several months while Alco worked ou ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
ChME3
The ČKD ČME3 is a six-axle diesel-electric locomotive built by ČKD. The class was used primarily for shunting and mainline duties. With over 8,000 produced during a production run of 31 years, it is one of the most produced locomotives in the world. Units have been operated by Russia, Belarus, Ukraine (as class ЧМЭ3, transliteration ''ChME3'') and other ex- Soviet bloc countries, in Czechoslovakia (as class T669.0, T669.1 and T669.5, later as ŽSR 770 and ČD 770 in Slovakia and the Czech Republic), on industrial railways in Poland (S200), in Albania (HSH T669.1), Iraq (DES 3101), Syria Syria ( ar, سُورِيَا or سُورِيَة, translit=Sūriyā), officially the Syrian Arab Republic ( ar, الجمهورية العربية السورية, al-Jumhūrīyah al-ʻArabīyah as-Sūrīyah), is a Western Asian country loc ... (LDE 1500) and in India (DEC 120). The ČKD ČME3 is classified as a Co-Co or C-C diesel-electric locomotive, with all six axle ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
China Railway DF5
The Dongfeng 5, or DF5 for short, () is a diesel-electric locomotive used by China Railway in the People's Republic of China. It has been in production since 1976 and is still produced as of 2006 by several local companies. It is the most common road switcher in China and is used for yard and road switching duties. A small number are also in service with the Korean State Railway in North Korea. Description In 1975, to meet a need for new and more powerful switchers, the Tangshan Locomotive & Rolling Stock Works, the Dalian Locomotive Works and the Dalian Locomotive Research Institute began a cooperative development effort on a new engine based on the 16V240ZJ diesel engine used in the Dongfeng 4, to be used in the development of a new locomotive, the DF5. By the end of 1975, the Tangshan and Dalian plants completed a successful trial of the first Model 8240Z inline 8-cylinder diesel engine, including a variety of performance tests and a 100-hour reliability test; the 8240Z w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
SNCB Class 77
The NMBS/SNCB Class 77 (also known as HLD 77 or HLR 77) is a class of 4 axle B'B' road switcher diesel hydraulic locomotive designed for shunting and freight work manufactured at the beginning of the 2000s by Siemens Schienenfahrzeugtechnik and later by Vossloh at the Maschinenbau Kiel plant in Kiel, Germany for the National Railway Company of Belgium (SNCB/NMBS). Background and design The initial order for 90 locomotives was given to Siemens in 1997 to replace an aging diesel fleet; the railway opted for a locomotive suitable for both shunting and mainline use, rather than separate classes. The locomotives were variants of the standard MaK G1200 series design, and are considered a development of the MaK G1205 type. The locomotive is an off-centre cab design with a two-speed voith hydraulic transmission driving all axles via cardan shafts. Auxiliary electrical supply is provided by an engine mounted alternator. Unlike many other MaK locomotives which use a MTU or CAT 12-cylin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
SNCB
french: Société nationale des chemins de fer belgesgerman: Nationale Gesellschaft der Belgischen Eisenbahnen , type = Statutory corporation , industry = Rail Transport , foundation = 1926 , founder = Government of Belgium , location = Avenue de la Porte de Hal/Hallepoortlaan 40 , location_city = 1060 Brussels , key_people = , products = Rail Transport , revenue = €2.296.6 billion (2012) , operating_income = €6.306,5 million (2012) , net_income = € -152.3 million (2012) , num_employees = 34,000 (2016) , parent = , subsid = BeNe Rail Eurogare Train World (BE) SNCB YPTO , location_country = Belgium , homepage = , foot_notes = The National Railway Company of Belgium ( nl, Nationale Maatschappij der Belgische Spoorwegen, or NMBS; french: Société nationale des chemins de fer belges, or SNCB; german: Nationale Gesellschaft der Belgischen Eisenbahnen ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Power Inverter
A power inverter, inverter or invertor is a power electronic device or circuitry that changes direct current (DC) to alternating current (AC). The resulting AC frequency obtained depends on the particular device employed. Inverters do the opposite of rectifiers which were originally large electromechanical devices converting AC to DC. The input voltage, output voltage and frequency, and overall power handling depend on the design of the specific device or circuitry. The inverter does not produce any power; the power is provided by the DC source. A power inverter can be entirely electronic or may be a combination of mechanical effects (such as a rotary apparatus) and electronic circuitry. Static inverters do not use moving parts in the conversion process. Power inverters are primarily used in electrical power applications where high currents and voltages are present; circuits that perform the same function for electronic signals, which usually have very low currents and vol ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Diesel 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 to ... [...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' 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 DDA40X. Changes Minor externally visible changes common across the whole line include the following: * Modified trucks with damping struts. Four-axle trucks have damping struts on two diagonally opposite corners. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
GE AC6000CW
The AC6000CW is a 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. Most examples were purchased by two railroads: Union Pacific and CSX. Design and production The AC6000CW was designed at the height of a horsepower race between the two major locomotive manufacturers, Electro-Motive Division of La Grange, Illinois with the SD90MAC, and GE Transportation of Erie, Pennsylvania with the AC6000CW, in the early to mid 1990s. The goal was . GE worked with Deutz-MWM of Germany in 1994 to design and construct the 7HDL engine for the locomotives. The first locomotive with a 7HDL was the "Green Machine" GE 6000, nicknamed for its green paint scheme. The first production models were also built in 1995: CSX Transportation 600-602, and Union Pacific Railroad 7000-7009. All these l ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
EMD SD70
The EMD SD70 is a series of diesel-electric locomotives produced by the US company Electro-Motive Diesel in response to the GE Dash 9-44CW. Production commenced in late 1992 and since then over 5,700 units have been produced; most of these are the SD70M and SD70MAC models. While the majority of the production was ordered for use in North America, various models of the series have been used worldwide. All locomotives of this series are hood units with C-C trucks, except the SD70ACe-P4 (and presumably the SD70MACH as well) which has a B1-1B wheel configuration, and the SD70ACe-BB, which has a B-B-B-B wheel arrangement. Superseding the HT-C truck, a new bolsterless radial HTCR truck was fitted to all EMD SD70s built 1992–2002; in 2003 the non-radial HTSC truck (basically the HTCR made less costly by removing radial components) was made standard on the SD70ACe and SD70M-2 models; the radial HTCR truck remained available as an option. Models SD70 (1992-1994) The EMD SD70 typic ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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