Guys, I a bit got mixed up with all the types of gearboxes presented by Audi.
Which gearbox is the best do you think and why?
So the choice is between Manual, Direct Shift Gearbox (DSG), Multitronic, Tiptronic, Automatic transmission (4-speed), R-tronic
Here is some discription of them:
Manual transmission
Also known as a stick shift, straight drive, or standard transmission is a type of transmission used in automotive applications. Manual transmissions often feature a driver-operated clutch and a movable gear selector. Most automobile manual transmissions allow the driver to select any gear at any time.
Direct shift gearbox (DSG)
The revolutionary direct shift gearbox (DSG) combines the advantages of a conventional six-speed manual-shift gearbox with the qualities possessed by a modern automatic transmission. The driver enjoys immense agility and driving pleasure with, at the same time, smooth, dynamic acceleration with no interruption to the power flow.
The technical basis of the direct shift gearbox (DSG) is a double clutch. This consists of two wet plate-type clutches with hydraulically regulated contact pressure. One of the two clutches engages the odd-numbered, the other the even-numbered gears. This principle enables gear shifts to be made without interrupting the power flow and keeps the shift times extremely short. While the first clutch is transmitting the power, the second clutch is ready to engage the next gear, which is preselected. When the driver makes the gear shift, the first clutch is released and the second engages, so that the gear shift takes place in a fraction of a second.
The driver can operate the DSG manually or allow changes to take place automatically. In the automatic mode there is a choice between the well-balanced, comfortable standard shift settings and a program with greater sports emphasis. Manual shifts are made either at the gear lever or at shift paddles behind the steering wheel.
Multitronic
The multitronic is a continuously variable transmission with a steel link-plate chain running in tension in an oil bath between two pairs of bevel wheels of variable diameter. It can transmit torque of up to 310 Nm - a world-first for this kind of transmission. In addition, it permits an exceptionally wide range of effective ratios. The differential is located in the same compact housing as the transmission. There are no more fixed gear ratios. The resulting smooth and powerful acceleration ensures a high level of driving comfort. There are also advantages when towing a trailer, thanks to the high torque available over the entire engine speed range. The design and the low weight of the transmission reduce fuel consumption. Manual gear selection mode is available, as with the 5-speed tiptronic transmission and six simulated gear ratios can be selected. In the automatic mode on the multitronic® that calculates the optimum gear ratio with the aid of a Dynamic Regulating Program (DRP) according to engine load, the driver's preferences and driving conditions.
Tiptronic
The tiptronic, which is available with five or six speeds, has all the advantages and technical features (Dynamic Shift Program (DSP), key lock, shift lock) of the automatic transmission. All gear changes take place without any interruption in engine power. This is particularly advantageous when towing a trailer.
tiptronic allows the driver to override the automatic mode by moving the lever into a second (tiptronic) shift gate and permits, for example, downshifting on winding mountain roads to increase the braking effect of the engine or for a particularly sporty driving style.
The six-speed tiptronic has wider transmission spacing, thus reducing fuel consumption and the noise level and increasing ride comfort. On all models it has an additional Sport program which delays upshifts for a sportier driving style. Shift quality has been further improved thanks to electronics integrated directly into the transmission.
Automatic transmission, 4-speed
Automatic transmissions reduce driver fatigue and burden helps the driver concentrate more fully on driving, traffic and the road. The four-speed automatic transmission with dynamic shift program (DSP) automatically adapts to the driving style currently preferred – from relaxed and steady to a more sporty style – and also takes traffic conditions into account. The “Keylock” and “Shiftlock” functions are added safety features. “Keylock” prevents the ignition key from being removed unless the transmission selector lever is at “P” (Park), so that the transmission is locked. After starting the engine and before the selector lever can be moved out of “P” or “N”, the brake pedal has to be pressed down
(“Shiftlock”). This prevents inadvertent vehicle movement after the engine has been started.
In the past, increased power was the main reason for using a turbocharger, but today energy conservation and reduced emissions are the primary reasons, together with good performance. Many modern diesel engines have turbochargers with variable turbine geometry (VTG). The angle of the blades changes according to engine load.
R-tronic sequential shift gearbox with joystick and paddle control, which offers exceptionally fast gear changes.