637 articles
DRG Class 44
The DRG Class 44 (Baureihe 44) was a German three-cylinder 2-10-0 heavy freight steam locomotive nicknamed Jumbo, built from 1926 to 1949 in 1,989 examples and running until the end of steam in Germany.
DRG Kleinlokomotive Class II
The DRG Kleinlokomotive Class II, also known as Köf II, is a standardized German light shunting locomotive developed from 1932, with over 1,100 built and about 180 preserved today.
Driving wheel
A driving wheel, or coupled wheel, is a powered locomotive wheel that receives torque from the pistons or turbine and transmits it to the rail.
DSB Class MZ
The DSB Class MZ is a class of 61 Co-Co diesel-electric locomotives built by NOHAB in Sweden for the Danish State Railways between 1967 and 1978.
Duplex locomotive
A duplex locomotive, also called a duplex drive locomotive, is a steam locomotive with two engine units on one rigid frame, first built in America in 1937.
Dynamic braking
Dynamic braking is a railway braking method in which traction motors act as generators to slow the train, with energy dissipated as heat or returned regeneratively.
Dynamometer car
A dynamometer car is a rolling laboratory railroad car coupled directly behind a locomotive to measure and record drawbar pull, speed, and train performance on real track.
E10 Series Shinkansen
The E10 Series Shinkansen (E10系), also called the E10 series, is a Japanese high-speed train ordered by JR East as the next-generation Tohoku Shinkansen trainset.
E231 series
The E231 series (E231系) is a Japanese commuter electric multiple unit introduced by JR East in March 2000 as the standard Tokyo-area commuter and suburban train.
E233 series
The E233 series is a JR East commuter electric multiple unit introduced in 2006 for Tokyo-area lines like the Chuo Rapid, and Japan's most numerous train type.
E235 series
The E235 series is a stainless-steel commuter electric multiple unit built by J-TREC for JR East, introduced on Tokyo's Yamanote Line in 2015 and the Yokosuka and Sobu Rapid lines from 2020.
Eastleigh Works
Eastleigh Works, also known as Eastleigh railway works, was the London and South Western Railway's locomotive works in Hampshire, which built 314 steam locomotives before closing in 2006.
Edward Thomas (locomotive)
Edward Thomas is a narrow-gauge saddle tank steam locomotive built in 1921 for the Corris Railway and running since 1952 on the Talyllyn Railway in Wales.
Electric locomotive
An electric locomotive is a railway locomotive with electric motors that draws power from overhead wires or conductor rails, offering high power and fast acceleration.
Electric multiple unit
An electric multiple unit (EMU) is a self-propelled passenger train with motors distributed among its carriages rather than concentrated in a locomotive, common in commuter and high-speed service.
Electric-steam locomotive
An electric-steam locomotive either uses an on-board steam engine to generate electricity for traction motors, or draws external electricity to heat its boiler water, as in Swiss wartime conversions.
Electro-diesel locomotive
An electro-diesel locomotive, also called a dual-mode or bi-mode locomotive, draws power from overhead wires or a third rail, plus an onboard diesel engine for non-electrified lines.
Electro-diesel multiple unit
An electro-diesel multiple unit is a self-propelled train using both diesel and electric power to run on electrified and non-electrified track. The Southern Region of British Railways first used them in 1956.
Electro-Motive Diesel
Electro-Motive Diesel, also known as EMD, is an American locomotive maker founded in 1922 that led the switch from steam to diesel and has been owned by Caterpillar's Progress Rail since 2010.
EMC 1800 hp B-B
The EMC 1800 hp B-B was a class of five experimental passenger diesel-electric locomotives built by Electro-Motive Corporation in 1935; B&O No. 50, the only survivor, ran the Royal Blue and is preserved in St. Louis.
EMD AEM-7
The EMD AEM-7 is a four-axle electric passenger locomotive built by EMD with Swedish ASEA electrical equipment between 1978 and 1988, used mainly by Amtrak on the Northeast Corridor.
EMD BL2
The EMD BL2 is a 1,500-horsepower diesel road switcher built by General Motors between 1948 and 1949. Only 58 were sold before EMD replaced it with the GP7 in 1949.
EMD DDA40X
The EMD DDA40X, nicknamed Centennial, was a 6,600 hp D-D diesel-electric locomotive built by General Motors' EMD for Union Pacific from 1969 to 1971, the most powerful single-unit diesel type ever built.
EMD E and F units
The EMD E and F units were two families of streamlined cab-unit diesel locomotives built by Electro-Motive from 1937 to 1963, with more than 7,500 F units produced.
EMD F40PH
The EMD F40PH is a 3,000-hp four-axle diesel-electric passenger locomotive built by Electro-Motive Division from 1976, derived from the GP40-2 and standard on Amtrak and commuter railroads.
EMD F7
The EMD F7, also built as the GMD F7, is a 1,500-horsepower diesel-electric cab locomotive EMD and its Canadian subsidiary built from 1949 to 1953.
EMD FP45
The EMD FP45 is a 3,600 hp six-axle cowl diesel-electric passenger locomotive built by EMD from December 1967 at Santa Fe's request, with 14 units built.
EMD G16
The EMD G16 is a diesel-electric road switcher built by General Motors' Electro-Motive Division from 1958 for export markets, with Yugoslavia its biggest customer as class 661, nicknamed "Kenedi".
EMD GP9
The EMD GP9 is a 1,750 hp four-axle diesel-electric road-switcher locomotive built by General Motors from 1954 to 1963, the most-produced EMD model with 4,112 units built.
EMD MRS-1
The EMD MRS-1 is a six-axle diesel-electric locomotive built by General Motors' Electro-Motive Division in 1952 for the US Army, designed for multiple track gauges.