Transmission management is by means of a mechatronic module. This technology package provides maximum precision and smoothness during drive-off and when shifting between gears. This was achieved by various means, including a compact pressure cylinder, electronically controlled rotation speed compensation and an optimized coil spring package.
Highly precise management of both multidisk clutches was one of the most important development goals. Gears one through three and reverse have three-cone synchronization. Carbon-coated synchronizer rings ensure synchronization of maximum quality and durability. SCROLL TO CONTINUE WITH CONTENT Quality with no compromises: internal components of the seven-speed S tronicĮach component of the new seven-speed S tronic attests to Audi’s innovative way of thinking and the company’s uncompromising quality standards. When needed, the center differential can deliver up to 85 percent of the power to the rear axle or up to 65 percent to the front axle. To reduce weight, this shaft is also hollow. In the regular distribution pattern, 60 percent of the torque flows via the propeller shaft to the rear-axle differential and 40 percent via a side shaft to the bevel pinion of the front-axle differential. Power flows from the drive shaft to the self-locking center differential of the quattro drivetrain, which distributes it into two directions.
#AUDI DUAL CLUTCH TRANSMISSION DRIVER#
It is so comfortable and smooth that the driver hardly notices it. This process takes only a few hundredths of a second and is completed without interrupting traction. The shift process takes place as the clutches are operated – while K1 is opening, K2 closes at lightning speed. If the car is accelerating in third gear, for example, fourth gear will have already been engaged in the second part-transmission. All the gearwheels are mounted one behind the other on the two output shafts, in the sequence 4, 6, 2, R, 1, 3, 7, 5.īoth part-transmissions are continuously active, but only one is connected to the engine at a time. It is connected to the smaller K2 clutch, which is located inside the larger one and engages and disengages the even-numbered gears 2, 4 and 6, as well as reverse. These are located in the rear section of the aluminum housing, toward the center of the car.Ī hollow shaft rotates around the solid shaft.
The large outer clutch K1 transmits engine torque through a solid shaft to the gearwheels for the odd-numbered gears 1, 3, 5 and 7. The two multidisk clutches integrated into it engage and disengage different gears. The seven-speed S tronic consists of two part-transmissions. The shift response is dynamic, smooth and extremely precise – typical Audi features. The gears can also be shifted manually with the selector lever or with the optional rocker switches on the steering wheel – an impressively rapid action. The fully automatic mode, in which the computer selects the gears, provides D (Drive) and S (Sport) programs.
#AUDI DUAL CLUTCH TRANSMISSION DRIVERS#
It is a high-tech component which Audi has designed to be dynamic and highly efficient.Īudi drivers can use the new seven-speed S tronic in various modes. The new transmission, entirely developed by Audi, is intended for sporty mid-range models. With the seven-speed S tronic, Audi is launching a new phase in its driveline strategy. In addition to the new seven-speed S tronic, Audi offers a wide range of other transmission technologies, with an ideal solution for every need. It is suitable for a wide range of sporty models and will go into production in the second half of 2008. This new dual-clutch transmission is designed for use with a longitudinally installed engine and quattro all-wheel drive. The seven-speed S tronic has an extremely dynamic, high-efficiency action. Seven gears that shift at lightning speed without interrupting traction – Audi presents a new phase in the evolution of transmission systems.
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