What does a 7-speed dual clutch gearbox mean?

The seven-speed dual clutch power shift has seven forward gears.

Seven-speed dual clutch can be divided into dry type and wet type. Double clutch, that is, power shift. DCT is different from the general automatic transmission system. It belongs to both manual gear and automatic gear. In addition to the flexibility of manual transmission and the comfort of automatic transmission, it can also provide uninterrupted power output.

The traditional manual transmission uses a clutch. When shifting gears, the driver must step on the clutch pedal to make the gears of different gears mesh, and the power is interrupted when shifting gears, which makes the output performance intermittent.

Working principle:

Dual clutch automatic transmission is based on manual transmission. Different from manual gearbox, two clutches in DCT are connected with two input shafts, and the shift and clutch operation are realized by an electromechanical integration module integrating electronic and hydraulic components. And is no longer operated by the clutch pedal. Just like tiptronic hydraulic automatic transmission, the driver can manually shift gears or put the shift lever in fully automatic D or S mode. Shifting in this mode is usually realized by gear and clutch actuator.

Dual clutch gearbox is an automatic gearbox developed on the basis of manual gearbox. The structure of the dual-clutch gearbox is similar to that of the manual gearbox, except that the dual-clutch gearbox has one more clutch and one more shift control mechanism than the manual gearbox.