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 

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

Category:Multiple units
Category:Locomotives