Thanks to the mild hybrid technology, this makes it possible for the vehicle to shut off its engine during the drive when it is not needed for propulsion. It handles lubrication of the transmission and enables engagement of the gear that is needed for an engine restart after a coasting phase. In some Audi models the eight-speed tiptronic has an electric oil pump. The transmission is ready to start within a very short period of time.
When restarting after a stop, its oil volume – of around 100 milliliters (0.1 US qt) – is pressurized by a spring-loaded piston, which is necessary for drive-off. It integrates a small, permanently filled hydraulic reservoir for this purpose. The eight-speed tiptronic is able to work together with the Audi start-stop system. The selector lever communicates fully electronically, without any mechanical connection with the transmission (shift-by-wire). In sport mode, the automatic transmission boosts driving dynamics by setting later shift points. on winding descents to boost engine braking or for driving in an exceptionally sporty style.
DSP QUATTRO VS SONORIS MANUAL
In a second shift gate, the tiptronic allows manual intervention in the automatic transmission’s operation. To enable an efficient mode of driving, it gives preference to large gears and low engine speeds. In the “D” mode, DSP autonomously sets the optimal shift point. The dynamic shift program (DSP), which controls the eight-speed tiptronic, is housed in a small steel box within the gear-shift unit.
DSP QUATTRO VS SONORIS DRIVER
As soon as the driver releases the brake, the clutch closes, and the damping effect of the torque converter ensures a smooth drive-off. If the car is stationary, an internal clutch decouples the transmission from the engine, even if the “D” stage is still selected – this avoids losses due to oil circulation in the converter. It works with limited slip in certain situations, which – in interplay with the integrated damper – permits very low engine speeds without vibrations occurring. Under normal driving conditions, the lockup torque converter connects the transmission directly to the engine. An rpm-adaptive torsion damper balances out undesired engine vibrations and enables efficient driving at extra-low engine speeds.Īlso playing a large role in the efficiency ensemble is the torque converter lockup clutch with integrated damper. Thanks to its eight speeds, jumps in rpm are small between gears, and the engine always runs near its ideal operating point. Audi uses it in many models with a longitudinally mounted engine. Gear shifts are gentle, spontaneous, fast and highly flexible. The eight-speed tiptronic is a classic torque-converter automatic transmission whose great strength lies in its high level of shifting and drive off comfort.
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