Diesel multiple unit

A diesel multiple unit or DMU is a multiple unit train consisting of multiple carriages powered by one or more on-board diesel engines. They may also be referred to as a railcar or railmotor, depending on country.

Transmission

The diesel engine drives the train through a transmission system. The transmission system may be:

• Mechanical, using a gearbox (diesel-mechanical)
• Hydraulic, using a torque converter (diesel-hydraulic)
• Electric, using a generator to power traction motors (diesel-electric)

Related pages

Wikimedia Commons has media related to Diesel multiple units, motor coaches and railcars.

• Electric multiple unit
• Diesel locomotive
• Multiple unit
• Railways
• Multiple units of Ireland

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