|Multiple unit trains|
Electric multiple unit
Multiple-unit train control
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.
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)
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