Matches in DBpedia 2016-04 for { <http://dbpedia.org/resource/Automatic_transmission> ?p ?o }
- Automatic_transmission abstract "This is about the transmission type for cars. For other meanings of \"AT\", see AT.An automatic transmission, also called auto, self-shifting transmission, n-speed automatic (where n is its number of forward gear ratios), or AT, is a type of motor vehicle transmission that can automatically change gear ratios as the vehicle moves, freeing the driver from having to shift gears manually. Like other transmission systems on vehicles, it allows an internal combustion engine, best suited to run at a relatively high rotational speed, to provide a range of speed and torque outputs necessary for vehicular travel. The number of forward gear ratios is often expressed for manual transmissions as well (e.g., 6-speed manual).The most popular form found in automobiles is the hydraulic automatic transmission. Similar but larger devices are also used for heavy-duty commercial and industrial vehicles and equipment. This system uses a fluid coupling in place of a friction clutch, and accomplishes gear changes by locking and unlocking a system of planetary gears. These systems have a defined set of gear ranges, often with a parking pawl that locks the output shaft of the transmission to keep the vehicle from rolling either forward or backward. Some machines with limited speed ranges or fixed engine speeds, such as some forklifts and lawn mowers, only use a torque converter to provide a variable gearing of the engine to the wheels.Besides the traditional automatic transmissions, there are also other types of automated transmissions, such as a continuously variable transmission (CVT) and semi-automatic transmissions, that free the driver from having to shift gears manually, by using the transmission's computer to change gear, if for example the driver were redlining the engine. Despite superficial similarity to other transmissions, automatic transmissions differ significantly in internal operation and driver's feel from semi-automatics and CVTs. In contrast to conventional automatic transmissions, a CVT uses a belt or other torque transmission scheme to allow an \"infinite\" number of gear ratios instead of a fixed number of gear ratios. A semi-automatic retains a clutch like a manual transmission, but controls the clutch through electrohydraulic means. The ability to shift gears manually, often via paddle shifters, can also be found on certain automated transmissions (manumatics such as Tiptronic), semi-automatics (BMW SMG), and CVTs (such as Lineartronic).The automatic transmission was invented in 1921 by Alfred Horner Munro of Regina, Saskatchewan, Canada, and patented under Canadian patent CA 235757 in 1923. (Munro obtained UK patent GB215669 215,669 for his invention in 1924 and US patent 1,613,525 on 4 January 1927). Being a steam engineer, Munro designed his device to use compressed air rather than hydraulic fluid, and so it lacked power and never found commercial application. The first automatic transmission using hydraulic fluid may have been developed in 1932 by two Brazilian engineers, José Braz Araripe and Fernando Lehly Lemos; subsequently the prototype and plans were sold to General Motors who introduced it in the 1940 Oldsmobile as the \"Hydra-Matic\" transmission. They were incorporated into GM-built tanks during World War II and, after the war, GM marketed them as being \"battle-tested.\" However, a Wall Street Journal article credits ZF Friedrichshafen with the invention, occurring shortly after World War I. ZF's origins were in manufacturing gears for airship engines beginning in 1915; the company was founded by Ferdinand von Zeppelin.".
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- Automatic_transmission wikiPageExternalLink 5370589.
- Automatic_transmission wikiPageExternalLink the_death_of_an_automatic_transmission.
- Automatic_transmission wikiPageExternalLink DG_10022623.
- Automatic_transmission wikiPageExternalLink Drive-a-Car-With-an-Automatic-Transmission.
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- Automatic_transmission wikiPageWikiLink AMC_and_Jeep_transmissions.
- Automatic_transmission wikiPageWikiLink AT.
- Automatic_transmission wikiPageWikiLink Acura.
- Automatic_transmission wikiPageWikiLink Adapted_automobile.
- Automatic_transmission wikiPageWikiLink Aisin_Seiki.
- Automatic_transmission wikiPageWikiLink Allison_Transmission.
- Automatic_transmission wikiPageWikiLink American_Motors.
- Automatic_transmission wikiPageWikiLink Audi_TT.
- Automatic_transmission wikiPageWikiLink Australia.
- Automatic_transmission wikiPageWikiLink Austria.
- Automatic_transmission wikiPageWikiLink Automatic_transmission_fluid.
- Automatic_transmission wikiPageWikiLink BMW.
- Automatic_transmission wikiPageWikiLink BMW_7_Series.
- Automatic_transmission wikiPageWikiLink BMW_7_Series_(E65).
- Automatic_transmission wikiPageWikiLink Belgium.
- Automatic_transmission wikiPageWikiLink Belize.
- Automatic_transmission wikiPageWikiLink Belt_(mechanical).
- Automatic_transmission wikiPageWikiLink Bentley.
- Automatic_transmission wikiPageWikiLink Bistability.
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- Automatic_transmission wikiPageWikiLink Buick.
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- Automatic_transmission wikiPageWikiLink Car_controls.
- Automatic_transmission wikiPageWikiLink Category:American_inventions.
- Automatic_transmission wikiPageWikiLink Category:Automobile_transmissions.
- Automatic_transmission wikiPageWikiLink Category:Automotive_transmission_technologies.
- Automatic_transmission wikiPageWikiLink Category:Mechanical_power_control.
- Automatic_transmission wikiPageWikiLink Centrifugal_governor.
- Automatic_transmission wikiPageWikiLink Chevrolet.
- Automatic_transmission wikiPageWikiLink China.
- Automatic_transmission wikiPageWikiLink Chrysler.
- Automatic_transmission wikiPageWikiLink Chrysler_PowerFlite_transmission.
- Automatic_transmission wikiPageWikiLink Clutch.
- Automatic_transmission wikiPageWikiLink Continuously_variable_transmission.
- Automatic_transmission wikiPageWikiLink Croatia.
- Automatic_transmission wikiPageWikiLink Cruise-O-Matic.
- Automatic_transmission wikiPageWikiLink Cummins.
- Automatic_transmission wikiPageWikiLink Denmark.
- Automatic_transmission wikiPageWikiLink Differential_(mechanical_device).
- Automatic_transmission wikiPageWikiLink Dodge_Ram.
- Automatic_transmission wikiPageWikiLink Dominican_Republic.
- Automatic_transmission wikiPageWikiLink Drag_racing.
- Automatic_transmission wikiPageWikiLink Drivers_license.
- Automatic_transmission wikiPageWikiLink Drivetrain_Systems_International.
- Automatic_transmission wikiPageWikiLink Driving_test.
- Automatic_transmission wikiPageWikiLink Dual-clutch_transmission.
- Automatic_transmission wikiPageWikiLink Dynaflow.
- Automatic_transmission wikiPageWikiLink Electric_generator.
- Automatic_transmission wikiPageWikiLink Electric_motor.
- Automatic_transmission wikiPageWikiLink Electrohydraulic_manual_transmission.
- Automatic_transmission wikiPageWikiLink Engine_braking.
- Automatic_transmission wikiPageWikiLink Engine_control_unit.
- Automatic_transmission wikiPageWikiLink Epicyclic_gearing.
- Automatic_transmission wikiPageWikiLink Estonia.
- Automatic_transmission wikiPageWikiLink Europe.
- Automatic_transmission wikiPageWikiLink Ferdinand_von_Zeppelin.
- Automatic_transmission wikiPageWikiLink Finland.
- Automatic_transmission wikiPageWikiLink Fluid_Drive.
- Automatic_transmission wikiPageWikiLink Fluid_coupling.
- Automatic_transmission wikiPageWikiLink Ford_AOD_transmission.
- Automatic_transmission wikiPageWikiLink Ford_ATX_transmission.
- Automatic_transmission wikiPageWikiLink Ford_AXOD_transmission.
- Automatic_transmission wikiPageWikiLink Ford_C4_transmission.
- Automatic_transmission wikiPageWikiLink Ford_C6_transmission.
- Automatic_transmission wikiPageWikiLink Ford_CD4E_transmission.
- Automatic_transmission wikiPageWikiLink Ford_Model_T.
- Automatic_transmission wikiPageWikiLink Ford_Motor_Company.
- Automatic_transmission wikiPageWikiLink Forklift.
- Automatic_transmission wikiPageWikiLink France.
- Automatic_transmission wikiPageWikiLink Friction.
- Automatic_transmission wikiPageWikiLink GM_4L60-E_transmission.
- Automatic_transmission wikiPageWikiLink GM_4L80-E_transmission.
- Automatic_transmission wikiPageWikiLink Gear_train.
- Automatic_transmission wikiPageWikiLink General_Motors.
- Automatic_transmission wikiPageWikiLink Germany.
- Automatic_transmission wikiPageWikiLink Hele-Shaw_clutch.
- Automatic_transmission wikiPageWikiLink Henry_Ford.
- Automatic_transmission wikiPageWikiLink Honda.
- Automatic_transmission wikiPageWikiLink Hondamatic.
- Automatic_transmission wikiPageWikiLink Hong_Kong.
- Automatic_transmission wikiPageWikiLink HowStuffWorks.
- Automatic_transmission wikiPageWikiLink Hudson_Motor_Car_Company.
- Automatic_transmission wikiPageWikiLink Hungary.