EMD SD70 series
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The EMD SD70 is a series of diesel-electric locomotives produced by the US company Electro-Motive Diesel. This locomotive family is an extension and improvisation to the EMD SD60 series. Production commenced in late 1992 and since then over 5,700 units have been produced; most of these are the SD70M, SD70MAC, and SD70ACe models. While the majority of the production was ordered for use in North America, various models of the series have been used worldwide. All locomotives of this series are hood units with C-C trucks, except the SD70ACe-P4 and SD70MACH which have a B1-1B wheel configuration, and the SD70ACe-BB, which has a B+B-B+B wheel arrangement.
Norfolk Southern SD70 No. 2562
Illinois Central SD70 No. 1004
Union Pacific SD70M No. 4352
Conrail SD70MAC No. 4135 "White Smiley"
Diesel locomotive
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A diesel locomotive is a type of railway locomotive in which the 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.
The ČKD ČME3, a common example of a diesel shunting locomotive
The InterCity 125 set a speed record – 148 mph (238 km/h) – for a diesel-powered train in 1987. Capable of 125 mph (201 km/h) in regular service, the train consists of two power cars with either seven or eight carriages between them.
These locomotives operated by Pacific National in Australia show three styles of diesel locomotive body: cab unit (front), hood unit, and flat-nose (rear).
Petrol–electric Weitzer railmotor, first 1903, series 1906