|
Road-switcher
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 t ... [...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] |
FM H-15-44
The FM H-15-44 was a diesel locomotive manufactured by Fairbanks-Morse from September 1947 to June 1950. The locomotive was powered by a , eight-cylinder opposed piston engine as its prime mover, and was configured in a B-B wheel arrangement mounted atop a pair of two-axle AAR Type-B road trucks with all axles powered. The H-15-44 featured an offset cab design that provided space for an optional steam generator in the short hood, making the model versatile enough to work in passenger service as well as freight duty. Raymond Loewy heavily influenced the look of the unit, which emphasized sloping lines and accented such features as the radiator shutters and headlight mounting, as is found oCNJR #1501anKCS #40 The cab-side window assembly incorporated "half moon"-shaped inoperable panes which resulted in an overall oblong shape. The platform ( underframe) was shared with F-M's end cab road switcher, the FM H-20-44, as was the carbody to some extent. The platform and carbody was ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
EMD GP7
The EMD GP7 is a four-axle (AAR wheel arrangement#B-B, B-B) diesel-electric locomotive built by General Motors Electro-Motive Division and General Motors Diesel between October 1949 and May 1954.Pinkepank, Jerry A. (1973) pp. 53 The GP7 was the first EMD road locomotive to use a hood unit design instead of a cab unit, car-body design. This proved to be more efficient than the car body design as the hood unit cost less to build, was cheaper and easier to maintain, and had much better front and rear visibility for switching. Power was provided by an EMD 567, EMD 567B 16-cylinder (engine), cylinder engine which generated . The GP7 was offered both with and B unit, without control cabs, and those built without control cabs were called a GP7B. Five GP7B's were built between March and April 1953. Of the 2,734 GP7's built, 2,620 were for American railroads (including 5 GP7B units built for the Atchison, Topeka and Santa Fe Railway), 112 were built for Canadian railroads, and 2 were ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
ALCO RS-2
The ALCO RS-2 is a AAR wheel arrangement#B-B, 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 ALCO RS-3, RS-3, which was more popular. Several examples have been preserved. Design and development The RS-2 was a further development of the road switcher concept inaugurated with the ALCO RS-1, RS-1. Externally, the RS-2 bodywork was more rounded. A more significant change was the switch from the RS-1's ALCO 539T engine to the ALCO 244, adding horsepower to better handle heavy road service. The new engine was a turbocharged four-stroke diesel engine, four-stroke V12 engine, V12 diesel engine with a bore (engine), bore and stroke (engine), stroke developing 1,500 (later 1,600) hp at 1, ... [...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 (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 axles powered. As such, it is particularly suited for pulling heavy, slow freight and cargo trains. Gallery Тепловозы ЧМЭ3 в депо Славянск.jpg, ČME3 in depot Sloviansk, Ukrainian Railways ЧМЭ3-2454, Молдова, Приднест ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
China Railway DF5
The DF5 ( (Dōngfēng 5) or "East Wind") is a diesel-electric locomotive used by China Railway in the People's Republic of China. It has been in production since 1976 and was still produced as of 2006 by several local companies. It is the most common road switcher locomotive 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. Production History In 1975, to meet a need for new and more powerful switchers, the CRRC Tangshan, Tangshan Locomotive & Rolling Stock Works, the CNR Dalian, Dalian Locomotive Works and the CNR Dalian Locomotive Research Institute, Dalian Locomotive Research Institute began a cooperative development effort on a new engine based on the 16V240ZJ diesel engine used in the China Railways DF4, 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-cy ... [...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 Vossloh Schienentechnik/Vossloh Locomotives 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. Siemens sold its locomotive manufacturer division (Siemens Schienenfahrzeugtechnik) to Vossloh in 1998. The locomotives were variants of the standard MaK G 1200 series design, and are considered a development of the MaK G 1205 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 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
SNCB
The National Railway Company of Belgium (, NMBS; , SNCB; ) is the national railway company of Belgium. The company formally styles itself using the Dutch and French abbreviations NMBS/SNCB. The corporate logo designed in 1936 by Henry van de Velde consists of the linguistically neutral letter B in a horizontal oval. History NMBS/SNCB is an autonomous government company, formed in 1926 as successor to the Belgian State Railways. From 1942 to 1944, amid Nazi Germany's occupation of Belgium, the company was paid 51 million Belgian francs by the Nazi Germany to send 28 trains carrying 25,843 Jews and Roma people to Auschwitz where only 1,195 survived. The company also sent 16,000 political prisoners to concentration camps. In 2005, the company was split up into three parts: Infrabel, which manages the railway infrastructure, network operations, and network access, the public railway operator NMBS/SNCB itself to manage the freight (B-Cargo) and passenger services, and NMBS/SNCB-H ... [...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 maybe 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] |
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] |
