Diesel Multiple Units

May 11, 2014

Diesel Multiple Units (DMU) is relatively new technology, which is gaining popularity worldwide. It allows trains to run onto branch lines without any electrification in the tracks. A diesel engine is fixed on board, and transmits power to the wheels hydraulically, electrically or mechanically. This classifies diesel trains into three main categories.

DMUs offer several advantages. They operate at lower costs and consume less fuel at faster speeds. These trains generate a reduced amount of noise pollution. Their disadvantages, which include higher maintenance costs and increased air pollution, are obvious when the traffic volume is large so they are used for light traveling purposes.