Why do we hanker after manual gearboxes when dual-clutchers have huge all-round benefits? We look in-depth at the often underrated technology
Four decades ago, a technology that would eventually have a massive impact on the drivability of cars today was born. The dual-clutch transmission , now a common feature in most cars to the point of exclusivity in some, was dreamed up by a small team of engineers atThe Porsche Doppelkupplungsgetriebe almost proved a bridge too far in the early 1980s.
The idea of the DCT is that theoretically it should be possible to swap ratios with no interruption of torque in just a few milliseconds. By having the forward speeds of the gearbox split between two separate clutches, each forward speed can be preselected and the ratio changed by simultaneous opening and closing of the clutches, taking one ratio out of the equation and bringing the other into play.
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