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.
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 owns a substantial fleet of Industrial and depot shunting locomotives which are available for hire. The company is part of Ed Murray & Sons Ltd.
Andrew Barclay Sons & Co., currently operating as Brodie Engineering, is a railway engineering company, specialising in the heavy maintenance, refurbishment and overhauls for both passenger and freight rolling stock. Based around its works at Kilmarnock, it is the only active rail engineering business in 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 has been owned by Progress Rail since 2010. 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, a subsidiary of the American heavy equipment manufacturer Caterpillar. 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 S-2 and S-4 are 1,000-horsepower (746 kW) diesel electric switcher locomotives produced by ALCO and Canadian licensee Montreal Locomotive Works (MLW).
The ALCO FA is a family of B-B diesel locomotives designed to haul freight trains. The locomotives were built by a partnership of ALCO and General Electric in Schenectady, New York, between January 1946 and May 1959. Designed by General Electric's Ray Patten, they were of a cab unit design; both cab-equipped lead FA and cabless booster FB models were built. A dual passenger-freight version, the FPA/FPB, was also offered. It was equipped with a steam generator for heating passenger cars.
Derby Litchurch Lane Works, formerly Derby Carriage and Wagon Works, is a railway rolling stock factory in Derby, England. It is presently owned by the multinational transportation manufacturer Alstom.
Commonwealth Engineering was an Australian engineering company that designed and built railway locomotives, rolling stock and trams.
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 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 Diesel Locomotive Factory, Marhowrah is a joint venture of GE Transportation, part of American company Wabtec, with Indian Railways for the production of 1000 high-power freight locomotives over a period of 10 years designed to run on Indian railway tracks. This factory is located at Marhaura and started manufacturing the locomotives from September 2018.
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.
