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Statements

Subject Item
dbr:Electric_transmission_(propulsion)
rdfs:label
Electric transmission (propulsion)
rdfs:comment
Electric transmission or electric powerchain is a transmission system for propelling motor vehicles. It is used for in road, rail, and marine transport. The defining characteristic of electric transmission is that it avoids the need for a gearbox, by converting the mechanical force of the engine into electrical energy (through a dynamo or alternator), and using the electrical energy to drive traction motors, which propel the vehicle mechanically. The traction motors may be driven directly, or in some cases, via a rechargeable battery; if rechargeable batteries are used, the vehicle is considered to be a hybrid vehicle.
dcterms:subject
dbc:Automotive_transmission_technologies
dbo:wikiPageID
63903419
dbo:wikiPageRevisionID
1084762930
dbo:wikiPageWikiLink
dbr:Gas_turbine-electric_locomotive dbr:Hydraulic_drive_system dbr:Hydrostatic_transmission dbr:Alternator dbr:Hydrokinetic_transmission dbr:Cars dbr:Electrical_energy dbr:Dynamo dbr:Petrol_engines dbr:Hydraulic_transmission_(disambiguation) dbr:Petrol-electric_transmission dbr:Transport dbr:Road_transport dbr:Petrol_engine dbr:Railway_locomotive dbr:Hybrid_vehicle dbr:Rechargeable_battery dbr:Mechanical_transmission dbr:Steam_turbine_engines dbr:Diesel-electric_locomotive dbr:Diesel-electric_multiple_unit dbr:Diesel_engines dbr:Diesel-electric_transmission dbr:Mechanical_force dbr:Rail_transport dbr:Second_World_War dbr:Gearbox dbr:Transmission_(mechanics) dbc:Automotive_transmission_technologies dbr:Motor_vehicles dbr:Engine dbr:Hybrid_electric_vehicle dbr:Marine_transport dbr:Ships dbr:Propulsion dbr:Turbine-electric_transmission dbr:Turbo-electric_transmission dbr:Traction_motors dbr:Gas_turbine_engines
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dbo:abstract
Electric transmission or electric powerchain is a transmission system for propelling motor vehicles. It is used for in road, rail, and marine transport. The defining characteristic of electric transmission is that it avoids the need for a gearbox, by converting the mechanical force of the engine into electrical energy (through a dynamo or alternator), and using the electrical energy to drive traction motors, which propel the vehicle mechanically. The traction motors may be driven directly, or in some cases, via a rechargeable battery; if rechargeable batteries are used, the vehicle is considered to be a hybrid vehicle. Electric transmission is usually classified as multiple separate transmission methods, according to engine type; for example, a vehicle powered by a petrol engine, using electrical transmission, would usually be classified as having petrol-electric transmission, despite the fact that the petrol engine is part of the engine, the transmission being a separate system. Electric transmission was first used in the early 1920s. It was generally found to be unfavourable compared to the other methods available at the time, traditional steam locomotive transmission being up to 15% more efficient. However, by the late 1920s it was recognised as the best for larger vehicles.
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