encyclopedia

DIESEL RAIL CAR

A self-powered rail car that usually has two diesel engines and can usually operate in multiple units (diesel multiple-unit car). (TRB)

DIESEL-ELECTRIC LOCOMOTIVE

In a common railroad language, refers to the diesel electric locomotive which uses a diesel engine to power an electric generator (or Alternator) and the electric current in turn is used to turn the traction motors connected to the locomotive’s…

DIESEL-HYDRAULIC LOCOMOTIVE

A locomotive in which power from one or more diesel engines is delivered through hydraulic transmission to the driving axles by means of shafts and gears. The hydraulics are for speed control. (TRB)