A diesel multiple unit or DMU is a multiple-unit train powered by on-board diesel engines. A DMU requires no separate locomotive, as the engines are incorporated into one or more of the carriages. Diesel-powered single-unit railcars are also generally classed as DMUs. Diesel-powered units may be further classified by their transmission type: diesel–mechanical DMMU, diesel–hydraulic DHMU, or diesel–electric DEMU.
The American Locomotive Company was an American manufacturer that operated from 1901 to 1969, initially specializing in the production of locomotives but later diversifying and fabricating at various times diesel generators, automobiles, steel, tanks, munitions, oil-production equipment, as well as heat exchangers for nuclear power plants.
GE Transportation is a division of Wabtec. It was known as GE Rail and owned by General Electric until sold to Wabtec on February 25, 2019. The organization manufactures equipment for the railroad, marine, mining, drilling and energy generation industries. The company was founded in 1907. It is headquartered in Pittsburgh, Pennsylvania, while its main manufacturing facility is located in Erie, Pennsylvania. Locomotives are assembled at the Erie plant, while engine manufacturing takes place in Grove City, Pennsylvania. In May 2011, the company announced plans to build a second locomotive factory in Fort Worth, Texas, which opened in January 2013.
Montreal Locomotive Works (MLW) was a Canadian railway locomotive manufacturer that existed under several names from 1883 to 1985, producing both steam and diesel locomotives. For many years it was a subsidiary of the American Locomotive Company. MLW's headquarters and manufacturing facilities were in Montreal, Quebec.
Brush Traction was a manufacturer and maintainer of railway locomotives in Loughborough, England whose operations have now been merged into the Wabtec company's Doncaster UK operations.
The Hunslet Engine Company is a locomotive-building company, founded in 1864 in Hunslet, England. It manufactured steam locomotives for over 100 years and currently manufactures diesel shunting locomotives. The company is part of Ed Murray & Sons Ltd.
Adtranz was a multi-national rail transportation equipment manufacturer with facilities concentrated in Europe and the US. The company, legally known as ABB Daimler-Benz Transportation was created in 1996 as a joint venture between ABB and Daimler-Benz to combine their rail equipment manufacturing operations. In 1999, DaimlerChrysler bought ABB's shares and changed the company's official name to DaimlerChrysler Rail Systems. The company was acquired by Bombardier Inc. in 2001, which merged it into its Bombardier Transportation division, which became the largest rail equipment manufacturer in the world at the time, and was ultimately acquired by Alstom in 2021.
Andrew Barclay Sons & Co., currently operating as Brodie Engineering, is a builder of steam and later fireless and diesel locomotives. The company's history dates to foundation of an engineering workshop in 1840 in Kilmarnock, Scotland.
Bombardier Transportation was a Canadian-German rolling stock and rail transport manufacturer, with headquarters in Berlin, Germany. It was one of the world's largest companies in the rail vehicle and equipment manufacturing and servicing industry. Bombardier Transportation had many regional offices, production and development facilities worldwide. It produced a wide range of products including passenger rail vehicles, locomotives, bogies, propulsion and controls. In February 2020, the company had 36,000 employees, and 63 manufacturing and engineering locations around the world. Formerly a division of Bombardier Inc., the company was acquired by French manufacturer Alstom on 29 January 2021.
Electro-Motive Diesel is a brand of diesel-electric locomotives, locomotive products and diesel engines for the rail industry. Formerly a division of General Motors, EMD is now owned by Progress Rail, a subsidiary of Caterpillar Inc. Electro-Motive Diesel traces its roots to the Electro-Motive Engineering Corporation, founded in 1922 and purchased by General Motors in 1930. After purchase by GM, the company was known as GM's Electro-Motive Division. In 2005, GM sold EMD to Greenbriar Equity Group and Berkshire Partners, and in 2010, EMD was sold to Progress Rail. Upon the 2005 sale, the company was renamed to Electro-Motive Diesel.
Crewe Works is a British railway engineering facility located in the town of Crewe, Cheshire. The works, which was originally opened by the Grand Junction Railway in March 1843, employed around 7,000 to 8,000 workers at its peak. In the 1980s much of the engineering works were closed. Most of the site has been redeveloped, but the remaining parts are owned and operated by Alstom.
Doncaster Railway Works is a railway workshop located in Doncaster, England.
The ALCO RSD-15 is a diesel-electric locomotive built by the American Locomotive Company (ALCO) of Schenectady, New York between August 1956 and June 1960, during which time 75 locomotives were produced. The RSD-15 was powered by an ALCO 251 16-cylinder four-cycle V-type prime mover rated at 2,400 horsepower (1.79 MW); it superseded the almost identical ALCO 244-engined RSD-7, and was catalogued alongside the similar but smaller 1,800 hp (1.34 MW) RSD-12, powered by a 12-cylinder 251-model V-type diesel engine.
Derby Litchurch Lane Works, formerly Derby Carriage and Wagon Works, is a railway rolling stock factory in Derby, England. It was opened in the 19th century by the Midland Railway. The plant has produced rolling stock under the ownership of the Midland Railway. It is now owned by Alstom.
Commonwealth Engineering was an Australian engineering company that designed and built railway locomotives, rolling stock and trams followed by BREL.
CJSC Transmashholding is the largest manufacturer of locomotives and rail equipment in Russia and after merging with LocoTech service the fourth largest engineering company in the field of transport technology globally.
The Société Franco-Belge was a Franco-Belgian engineering firm that specialised in the construction of railway vehicles and their components and accessories. The company originated in 1859 as the Belgian firm Compagnie Belge pour la Construction de Machines et de Matériels de Chemins de Fer, founded by Charles Evrard. The company expanded its share capital in 1881 forming a new firm Société Anonyme Franco-Belge pour la Construction de Machines et de Matériel de Chemins de Fer and constructed a factory in Raismes (Valenciennes) in the Département Nord in France.
The rail vehicle factory in Hennigsdorf, Germany, was founded in 1910 by AEG. Locomotive production began in 1913, and in the 1930s absorbed the work of the August Borsig locomotive factory, being renamed the Borsig Lokomotiv Werke GmbH until 1944. After the Second World War the factory was nationalised in the German Democratic Republic and produced electric locomotives for home use and for export, mainly to Communist Bloc countries under the name Lokomotivbau-Elektrotechnische Werke (LEW).
The Indian locomotive class WDG-4G is a class of dual-cabin freight-hauling diesel-electric locomotive used by the Indian Railways (IR). The locomotive is designed by GE Transportation and is based on its Evolution Series, which are used in North America. The class is meant for freight hauling and replaces the older American Locomotive Company (ALCO)-designed locomotives, which have been the mainstay diesels of Indian Railways since 1962. Equipped with a 12-cylinder fully turbocharged GEVO engine, it is claimed to be 50% more environmentally friendly than its predecessors and is the first in the country to be compliant with level one of the emission norms set by the International Union of Railways (UIC-1). The locomotive has two cabs for easy reversal, both of which are air conditioned.
