What is the principle of a dual-clutch transmission?
2 Answers
The principle of a dual-clutch transmission is: Inside the dual-clutch transmission, there are two automatically controlled clutches. When an odd gear is engaged, clutch one engages to make one set of gears mesh and output power. Before shifting to the next gear, the next set of meshing gears has already been preselected, while clutch two, which is associated with it, remains disengaged. When shifting to the next gear, clutch one, which was in operation, disengages to disconnect the currently used gears from the power source. A dual-clutch transmission differs from a conventional automatic transmission system. It is based on a manual transmission but is not an automatic transmission. In addition to offering the flexibility of a manual transmission and the comfort of an automatic transmission, it also provides uninterrupted power output.
I've driven cars with dual-clutch transmissions and find their mechanism quite ingenious. Simply put, they have two sets of clutches: one manages odd-numbered gears like 1st, 3rd, and 5th, while the other handles even-numbered gears such as 2nd, 4th, and 6th. When I'm driving, say in 2nd gear, the other clutch has already pre-selected 3rd gear, ready for the shift. The transition happens instantly with almost no power interruption, making acceleration quicker and smoother. This design originates from racing technology, saving fuel while offering a manual-like yet automated driving experience. The downside is some jerkiness at low speeds and higher maintenance costs. Overall, dual-clutch transmissions make driving more enjoyable, especially with their super-responsive performance during high-speed overtaking.
