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 Internal combustion engine drives two clutch packs scion.The outer clutch pack drives gears 1, 3, 5 and reverse xb the outer clutch. pack has a larger diameter compared to the inner clutch. xb  and can therefore handle greater torque loadings. The inner clutch pack drives gears 2, 4, and 6. Instead of a standard large dry single-plate clutch, each clutch pack for the 6-speed DSG is a collection of four small wet interleaved clutch plates (similar to a motorcycle wet multi-plate clutch). Due to space constraints, the two clutch assemblies are concentric. Because the alternate clutch pack's gear-sets can be xb pre-selected (predictive shifts taking place while the other section is in use), un-powered time while shifting is avoided because the transmission of torque is simply switched from one clutch-pack to the other. This means that the DSG takes only about 8 milliseconds to upshift _In  xb comparison, the sequential manual transmission (SMT) in the Ferrari Enzo takes 150 milliseconds to up shift. The quoted time for up shifts is the time the wheels are  xb completely non-powered.

  • P position of the floor-mounted gear shift lever xb  means that the transmission is set in "Park". xb Both clutch packs are fully disengaged, all gear-setsare disengaged, and a solid mechanical transmission 'lock' is applied to the crown wheel of the DSGs internal differential. This position must only be used when the motor vehicle is stationary.Furthermore, this is the postion which must be set before xb  being able to remove the vehicle ignition key xb.
  • N position of the floor-mounted shift lever means xb clutch  that the transmission is in "neutral". Just like in P above, both clutch xb  packs and all gear-sets are fully disengaged, however, the parking lock is disengaged. This xb position should be used when the motor vehicle is stationary for any  xb period of time, such as red traffic lights, or waiting in a queue of stationary traffic. The DSG should not be kept in any of the other active gear modes, and be held in a stationary xb position on the footbrake for periods longer than a brief period - due to the clutch being held on the bite point xb .

The floor selectorxb  lever also xb has an S position. When S is selected, "sport xb" mode is activated in the DSG. Sport mode still functions as a fully automatic mode, identical in operation to "D" mode, but upshifts and downshifts are made much higher up the engine rev-range. This aids a more sporty driving manner, by utilising considerably more of the available engine power, and also maximising engine braking. However, this mode does have a detrimental effect on the vehicle fuel consumption, when compared to D mode. This mode may not be ideal to use when road conditions are very slippery, due to ice, snow or torrential rain - because loss of tyre traction may be experienced (wheel spin during acceleration, and wheel locking during downshifts at high engine rpms under closed throttle).


 
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