Dual-clutch automatic transmission, the full English name is Dual Clutch Transmission.

It is a mechanical automatic transmission that maintains the various advantages of AMT, but its power transmission is connected to two input shafts through two clutches, and the passive gears of adjacent gears are staggered with the two input shafts. Gear mesh.

Coupled with the control of the two clutches, the transmission ratio can be converted without cutting off power, thereby shortening the shift time and effectively improving the shift quality.

Extended information:

Dual-clutch automatic transmission (DCT for short) is based on a manual transmission. What is different from the manual transmission is that the two clutches in the DCT are connected to the two input shafts, and the shifting and clutch operations are realized through a mechatronic module that integrates electronic and hydraulic components.

Just like the tiptronic hydraulic automatic transmission, the driver can shift manually or put the gear lever in fully automatic D gear (comfort mode, shifting when the engine is running at low speed) or S gear (task mode, Shifting gears when the engine is running at high speed) mode. Shifting in this mode is usually achieved by gear and clutch actuators.

The two clutches are each connected to a different input shaft. If clutch 1 is connected to gears 1, 3 and 5 via a solid shaft, clutch 2 is connected to gears 2, 4, 6 and reverse gear via a hollow shaft. In layman's terms, this type of gearbox has two clutches, one controls the 1st, 3rd, and 5th gears, and the other controls the 2nd, 4th, and 6th gears. Second gear is already ready when first gear is used, so the shifting time is greatly shortened and there is no delay.

Reference: DTC-Baidu Encyclopedia