The PDK is essentially two gearboxes in one, each with its own clutch. They work alternately and sequentially, with the next gear in sequence engaged when the first is selected. Computer control prevents downshifts that would result in engine damage, and, if speed decreases quickly enough, gears can be skipped. Gears are the same standard type as found in a normal manual gearbox, not the planetary gears of a torque converter automatic. Further sensor input and computer control prevents shifting at inopportune times, such as during hard cornering. The motorcycle-type wet clutches and the gearsets have separate lubrication systems, as each needs a different type of lubricating oil.
Created
