LuK Double Clutch
Double clutch transmissions offer improved driving dynamics and efficiency
The reduction of fuel consumption and CO2 emissions plays an increasing role in the development of modern vehicles. The double clutch transmission makes an important contribution into hitting these decreasing targets.
The clutch is the driving force here. The system is based on a manual transmission driven by a double clutch mounted on two nested gearbox input shafts. Even gears are actuated by one clutch, the odd gears by the other. Clutch control and actuation occur automatically or semi-automatically via a second shift gate – but in each case without a clutch pedal.
While the car drives in one gear, the next gear is pre-engaged but idle. When the ideal shift point is reached the appropriate clutch opens and the next gear activates in a fraction of a second. The result is a smooth drive with almost no power interruption.
Double clutch driving performance, acceleration and fuel consumption are also impressive. Even when compared to a manual transmission, a double clutch gearbox can achieve a fuel consumption saving of up to 6 percent. When compared to an automatic (torque converter) transmission, fuel savings of between 15 and 20 percent are possible.
Depending on the engine, a wet (oil bath) or dry double clutch can be specified by the vehicle manufacturer.
- Combines the comfort of an automatic with the drivability of a manual
- Similar attributes to an automatic transmission but with excellent efficiency
- Overlapping gearshift makes interruption of power transmission during gear changes hardly noticeable
- Reduces both fuel consumption and harmful emissions