An automatic transmission (often informally shortened to auto, and abbreviated to AT) is a motor vehicle transmission that can automatically change gear ratios as the vehicle moves, freeing the driver from having to shift gears manually. Similar but larger devices are also used for heavy-duty commercial and industrial vehicles and equipment.

Most automatic transmissions have a defined set of gear ranges, often with a parking pawl feature that locks the output shaft of the transmission. Continuously variable transmissions (CVTs), which are very different to conventional automatic transmissions, can change their 'ratios' over a wider 'stepless' range, rather than between a set of fixed gear ratios. CVTs have been used for decades in two-wheeled scooters; but have only seen use in a few automobile models. Recently, however, CVT technology has gained greater acceptance among manufacturers and customers, especially in Audi and Nissan automobiles, and gas-electric hybrid vehicles.

Some machines with limited speed ranges or fixed engine speeds, such as some forklift trucks and lawn mowers, only use a torque converter to provide a variable gearing of the engine to the wheels.

From Wikipedia under the GNU Free Documentation License
Sat Feb 6 20:52:38 2010

217 automatic transmission gif
volkswagen.msk.ru
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Volkswagen Passat Variant GL 2 0 9A KE Motronic 1991

Allison Automatic Transmission 02 jpg
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12664 View this Listing Contact Photographer More Photos for this Listing

From Yahoo Image Search: "Automatic transmission"
Thu Jan 28 04:51:12 2010

Mahindra Scorpio Automatic transmission launched in Egypt | Indian ...
indianautosblog.com
Mahindra Scorpio Automatic transmission launched in Egypt | Indian ...

Jaz

Fri, 05 Feb 2010 11:31:44 GM

The refreshed Scorpio with an . automatic transmission. is now in Egypt Mahindra Scorpio Automatic variant has been launched in Egypt. The Scorpio Automatic utilizes a 6-speed fully automatic gear box and a 2.2 litre mHawk engine.

88 chev sprint automatic transmission
3cylinders.com
88 chev sprint automatic transmission

unknown

Mon, 01 Feb 2010 13:49:00 GM

When engine is cold, . transmission. shifts into 3rd without going into 2nd. I can manually shift through all gears just fine and the . transmission. works good. Have been told there might be a vacume leak. The engine runs rough when cold and ...

2011 Hyundai Sonata with 198HP / 200HP Priced from $19916 - Carscoop
carscoop.blogspot.com
2011 Hyundai Sonata with 198HP / 200HP Priced from $19916 - Carscoop

(John @ Carscoop)

ue, 02 Feb 2010 18:06:00 GM

At launch, the freshly designed midsize sedan will be available exclusively with a new 2.4-liter four-cylinder engine producing 198HP, or 200HP with the dual exhaust system. A six-speed . automatic transmission. comes as standard. ...

From Google Blog Search: "Automatic transmission"
Fri Feb 5 19:45:02 2010

New Peugeot 308 CC Automatic - CARkeys
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New Peugeot 308 CC Automatic

CARkeys

Peugeot has introduced a new high-performance version of the 308 CC with six-speed automatic transmission . Previously the most powerful petrol automatic in ...

Peugeot introduces new AT6 6-speed auto ASEAN Automotive News

Six appeal from Peugeot Perthshire Advertiser



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Back to the future: Cars you remember are now considered antique - Victoria Advocate
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Back to the future: Cars you remember are now considered antique

Victoria Advocate

A four-speed automatic transmission was a new option. Cadillac DeVille: Cadillac's big sedan got a bit smaller and gained front-wheel-drive. ...
A more civilised Civic - iAfrica.com
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A more civilised Civic

iAfrica.com

Honda SA has added a 1.8-litre i-VTEC automatic - transmission model to its five-door Civic Hatchback range and has given all its models a features facelift. ...

Honda Civic hatch goes auto for 2010 Motoring

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From Google News Search: "Automatic transmission"
Fri Jan 29 14:57:48 2010

My automatic transmission shuddered and then stopped after decelerating, is it the transmission?
Q. My automatic transmission shuddered and then stopped after decelerating slowly at 40mph, is it the transmission? I re-started the car then tried putting it back in drive but it did the same thing, I checked all the fluids, the transmission fluid looks fine and everything is topped off... The car seems to be running fine now, but I don't want to risk the same happening.
Asked by Brainchildalpha - Tue Dec 22 02:48:53 2009 - - 1 Answers - 0 Comments

A. well if it is really cold you may be having a problem getting enough fuel to the engine. Permanent fix would be to replace the fuel pump or filter simple fix would be to add fuel preservative with antifreeze to every tank.
Answered by ewizard09 - Tue Dec 22 02:54:17 2009

Can you change an automatic transmission to a manual transmission?
Q. Is there a way that a dealership will change an automatic transmission to a manual transmission? And does anyone know how much it might cost?
Asked by ezekielstruth03 - Thu Apr 19 09:52:38 2007 - - 8 Answers - 0 Comments

A. the costs are high at a dealership most garages can do it also and your not paying as much 600.00 for the change not counting transmission
Answered by Robert N - Thu Apr 19 10:03:11 2007

Can i put a automatic transmission from 1985 Chevy pickup in 1970 Chevy pickup with manual transmission?
Q. The 1985 pickup is a Chevy 3/4 ton pickup, and the the 1970 pickup is half ton. If i do put the automatic transmission in the 1970 would i have to also put the steering columns in from the 1985 pickup? Both pickups have small block 350s. and i also want to swap them out so will the holes to mount the engine line up?
Asked by loui - Sun Jul 5 23:16:07 2009 - - 6 Answers - 0 Comments

A. Yes you can. It will take a lot of work to rebuild the engine to work with the automatic transmission and rebuild the steering console to make it automatic.
Answered by Jeremy S - Sun Jul 5 23:25:06 2009

From Yahoo Answer Search: "Automatic transmission"
Wed Feb 17 13:30:00 2010