Conventional manual gearboxes operate with just one clutch. To change gear, the driver steps on the clutch pedal and interrupts the power flow. This is a prerequisite because when changing gear a different pair of gears (ratios) is selected in the gearbox - and this cannot take place under load.
The DSG ® Direct-Shift Gearbox prevents this power interruption. In idealized terms, it offers the function of two manual gearboxes in one. Its technology though is combined in a single compact component.
Unlike conventional manual gearboxes, the Direct-Shift Gearbox has a two-part transmission shaft comprising an outer hollow shaft and an inner shaft. The inner transmission shaft serves the 1st , 3rd and 5th gears, the outer shaft is for gears 2, 4 and 6. A twin multi-plate clutch transfers engine power permanently to one of the two shafts.
When driving, one gear is always engaged and a second pre-selected. When the gearshift point is reached, one clutch segment opens in a flash while the other closes. The driver therefore hardly notices the gearshift process. This uninterrupted, efficient transfer of power enables particularly sporty driving.