What is the principle and effect of the dual clutch of the car?

in p>1939, Germany's Kegresse.A was the first to apply for the patent of dual-clutch transmission, and put forward the design concept of dividing the manual transmission into two parts, one of which transmits odd gears and the other transmits even gears, and its power transmission is connected with two input shafts through two clutches, and the passive gears of adjacent gears are staggered with the gears of the two input shafts. With the control of the two clutches, the transmission ratio can be changed without cutting off the power, thus shortening the shift time.