The Car and Truck Fleet and Leasing Management Magazine

Another Dual-Clutch Transmission From Audi

April 21, 2008

AUBURN HILLS, MI– Audi has introduced its S-Tronic Dual-Clutch, capable of routing 550Nm (405ft/lbs) of torque to all 4 wheels without breaking. It can also handle enginespeeds of up to 9,000 RPMs, according to www.inventerspot.com.

 

In anormal automatic transmission, one clutch is used to change between gears. Thecontrol unit calculates your speed, RPMs, and throttle placement and decidedthe proper shift point. A single clutch is engaged for the next gear and thenyou off. The S-Tronic uses two clutch mechanisms to decrease shift times andincrease economy and performance. As one gear is engaged from the first clutch,the next gear is already being aligned and essentially “waiting” for your rightfoot to give it the “OK.”

TheS-Tronic also has two different operating modes. In normal D-Mode (DrivingMode), gear changes are completely reliant on the computer. When in S-Mode(Sport Mode), the computer will shift the timing to allow for optimal shifts,and the optional paddle shifters are ordered, you can decide when the changewill take place.

 

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