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The transmission is monitored and regulated by Audi's "Dynamic Regulating Programme" (DRP), [2] which tracks the driver's inputs (from how the driver applies the throttle pedal), [2] driving conditions, and engine load - to compute the optimal gear ratio for fuel efficiency or maximum performance, as mandated by the user. [2]
The direct-shift gearbox uses a floor-mounted transmission shift lever, very similar to that of a conventional automatic transmission. [9] The lever is operated in a straight 'fore and aft' plane (without any 'dog-leg' offset movements), and uses an additional button to help prevent an inadvertent selection of an inappropriate shift lever position.
With the series of recall campaigns, Audi made several modifications; the first adjusted the distance between the brake and accelerator pedal on automatic-transmission models. Later repairs, of 250,000 cars dating back to 1978, added a device requiring the driver to press the brake pedal before shifting out of park. [ 39 ]
The A3 2.0 TDI clean diesel is a version of Audi's A3 2.0 TDI for the North American market, making it the second Audi TDI vehicle sold in North America, following the Audi Q7 TDI in 2008. It is a FWD vehicle with S-Tronic transmission with Hill-hold assist, Sirius satellite radio, Leather seats and steering wheel, Auxiliary audio input, Dual ...
Jatco JF613E 6-speed automatic transmission as used in the Renault Laguna. 4-speed medium/large Nissan Altima, Nissan Quest, Nissan X-Trail, Renault Samsung SM5; Jatco JF506E/F5A5 5-speed medium/large VW Golf, VW Sharan, MG Rover, Land Rover Freelander, Jaguar X-Type, Ford Mondeo, Audi A3, Mazda MPV, Mitsubishi Lancer Evolution
DCT transmissions have been used on vehicles sold by Alfa Romeo, Volkswagen, Audi, Tata Motors, SEAT, Skoda, and Bugatti, mostly marketed using the term Direct-Shift Gearbox (except for Alfa Romeo, which has used the term TCT, also Tata Motors uses the term DCA (Dual Clutch Automatic) and Audi, which has also used the term S-Tronic). [7] [43] [24]
The first known automobile engine to use a timing belt was the American 1954 Devin-Panhard racing car, used an engine converted from pushrods to overhead camshafts through the use of a toothed belt made by the Gilmer Company. [18] [19] This car won the Sports Car Club of America (SCCA) National Championship in 1956. [20]
The internal clutch actuator in a semi-automatic transmission can be powered by either hydraulic, pneumatic, or electric means. [5] [6] Later examples of clutchless manual transmissions used in road cars include the Saab Sensonic transmission, used in the 900 NG, and the Ferrari Valeo auto-manual transmission, used in the Mondial T.