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The SBB-CFF-FFS Eem 923 is a dual power version of the SBB-CFF-FFS Ee 922 electric shunting locomotive which was introduced into service with the Swiss Federal Railways (SBB) in 2012.
SBB had various shunting locomotives in use of which many had reached the end of their operational service life around 2010. As a result maintenance became expensive and combined with this was that, from an ecological perspective, these locomotives were no longer viable. Due to this SBB Cargo decided to order new dual power electro-diesel locomotives which could be used on the entire SBB network as the dual power design allowed them to operate efficiently on both the electrified rails and the short unelectrified sidings.
Because of the adoption of the Eem 923 SBB expects it can achieve a reduction in CO2 emissions of more than 4000 tonnes per annum compared with the current locomotives. [2]
SBB procured 30 machines in 2010 from Stadler Winterthur AG with an overall value of CHF 88 million. The first machine was delivered in March 2012 and deliveries continued until the end of 2013. [2] [3]
The locomotives utilize a Bo wheel arrangement and are capable of traveling at speeds up to 120 km/h while operating on 15 kV AC or 25 kV AC electrified lines. While operating on electrified lines the locomotives are capable of producing a power output of 1,500 kW (2,012 hp). [4]
When operating on non-electrified sidings, the locomotives are powered by a diesel engine-generator set which produced 290 kW (389 hp) at the wheel. [4] [5]
The design of the Eem 923 is derived from the Ee 922, an electrically powered two-axle locomotive also used by the SBB and produced by Stadler. [6]
Swiss Federal Railways is the national railway company of Switzerland.
The British Rail Class 73 is a British electro-diesel locomotive. The type is unusual in that it can operate from the Southern Region's 650/750 V DC third-rail or an on-board diesel engine to allow it to operate on non-electrified routes. This makes it very versatile, although the diesel engine produces less power than is available from the third-rail supply so the locomotives are rarely operated outside of the former Southern Region of British Rail. It is one of the first bi-mode locomotives ever built. Following the withdrawal and scrapping of the more powerful Class 74 bi-mode locomotives in 1977, the Class 73 was unique on the British railway network until the introduction of the Class 88 bi-mode locomotives in 2017. Ten locomotives have been scrapped.
An electro-diesel locomotive is a type of locomotive that can be powered either from an electricity supply or by using the onboard diesel engine. For the most part, these locomotives are built to serve regional, niche markets with a very specific purpose.
Alstom Traxx is a modular product platform of mainline diesel-electric and electric locomotives. It was produced originally by Bombardier Transportation and later Alstom, and was built in both freight and passenger variants. The first version was a dual-voltage AC locomotive built for German railways from the year 2000. Later types included DC versions, as well as quadruple-voltage machines, able to operate on most European electrification schemes: 1.5/3.0 kV DC and 15/25 kV AC. The family was expanded in 2006 to include diesel-powered versions. Elements common to all variants include steel bodyshells, two bogies with two powered axles each, three-phase asynchronous induction motors, cooling exhausts on the roof edges, and wheel disc brakes.
The Ae 6/6 is a heavy electric locomotive used by the Swiss Federal Railways (SBB-CFF-FFS). It is sometimes also referred to as canton locomotive ("Kantonslokomotive"), because the first 25 locomotives were named after the cantons, and carried the canton's coat of arms on the side and chrome embellishments, and the Swiss coat of arms on the front, between the chrome stripes. These adornments made them internationally famous. The other 95 locomotives received the names of capital cities of Swiss cantons, and other towns and cities, but without the chrome embellishments. The namings were held as ceremonies in the respective cities. A less appealing moniker is Schienenwolf as the three axle bogie construction stresses the tracks heavily.
SBB Cargo is a subsidiary of Swiss Federal Railways (SBB) specialising in railfreight and is operated as the Freight division. Swiss Federal Railways is a former state-owned and -controlled company that was transformed in 1999 into a joint-stock company under special legislation following the first Swiss railway reform and divided up into three independent divisions: Passenger, Freight and Infrastructure. The headquarters of Swiss Federal Railways SBB Cargo AG, the Freight division's official designation, are in Olten. In 2013, SBB Cargo had 3,061 employees and achieved consolidated sales of CHF 953 million. In Switzerland, SBB Cargo is the market leader in rail freight, transporting over 175,000 tons of goods every day. This corresponds to the weight of 425 fully loaded jumbo jets.
DB Class V 200 was the first series production diesel-hydraulic express locomotive of the German Deutsche Bundesbahn and – as Am 4/4 – of the SBB-CFF-FFS in Switzerland.
Am 4/6 1101 was the world's first gas turbine-electric locomotive. The locomotive was ordered by the Swiss Federal Railways (SBB-CFF-FFS) from the Swiss Locomotive and Machine Works (SLM) and Brown, Boveri & Cie (BBC) in 1939. The locomotive was delivered in 1941 and was in use on railroads in Switzerland, France and Germany until 1954.
The British Rail Class 88 is a type of mainline mixed traffic electro-diesel locomotive manufactured by Stadler Rail for Direct Rail Services (DRS) in the United Kingdom. The locomotive is part of the Stadler Euro Dual family. It is the first dual-mode locomotive in the UK to use the 25 kV AC electrification.
T41 was a type of diesel-electric locomotive used by Swedish State Railways between 1956 and 1988 for secondary line services and later for shunting. It was built by Nydquist & Holm (NOHAB), who produced five locomotives under licence from General Motors Electro-Motive Division.
For more than a century, the Swiss locomotive, multiple unit, motor coach and railcar classification system, in either its original or updated forms, has been used to name and classify the rolling stock operated on the railways of Switzerland. It started out as a uniform system for the classification and naming of all rolling stock, powered and unpowered, but had been replaced and amended by the UIC classification of goods wagons.
The Am 6/6, later known as Am 861, is a class of diesel shunting locomotive which were built for the Swiss Federal Railways (SBB) and were intended for use as heavy hump shunters at the Limmattal classification yard.
The Vossloh G1700 BB is a four axle B′B′ medium power diesel-hydraulic locomotive manufactured by Vossloh Locomotives GmbH. in Kiel.
The Stadler Eurolight is the brand name for a family of 4-axle Bo'Bo' mainline diesel-electric locomotives with sub-20-tonne axleloads for passenger and freight trains produced by Stadler Rail.
The Stadler Euro-Dual is a series of dual power, electro-diesel locomotive by Stadler Rail Valencia. Unlike traditional dual mode locomotives, fitted with relatively low-powered diesel engines for 'last mile' movements only, vehicles are typically furnished with power units more comparable to that of mainline diesel locomotives.
The SBB-CFF-FFS RAm TEE I and NS DE4 were a class of five 4-car diesel-electric trainsets ordered for Trans Europe Express (TEE) service. Two were ordered by the Swiss Federal Railways (SBB-CFF-FFS) and three by Nederlandse Spoorwegen (NS)
An electro-diesel multiple unit (EDMU) or bi-mode multiple unit (BMU) is a form of a multiple unit train that can be powered either by electric power picked up from the overhead lines or third rail or by using an onboard diesel engine, driving an electric generator, which produces alternating current (AC) or direct current (DC) electric power.
The British Rail Class 93 is a tri-mode locomotive built by Stadler Rail in Valencia. It is an evolution of the Class 88 bi-mode locomotive which was built by Stadler for Direct Rail Services. Three different power sources are used to power the locomotive – 4,000 kW (5,400 hp) 25 kV AC overhead electric power, or a 900 kW (1,200 hp) diesel engine supplemented by a 400 kW (540 hp) battery – allowing the locomotive to be used on both electrified and non-electrified lines.
The British Rail Class 99 is a planned class of dual-mode electro-diesel Co-Co locomotives that will haul freight trains on both electrified and non-electrified lines. It will be based on the Stadler Euro Dual platform.
The 257 Series is a meter gauge freight electro-diesel locomotive based on Stadler Rail's Euro Dual series. It is operated by Ferrocarrils de la Generalitat de Catalunya (FGC) in the Llobregat-Anoia line.
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