Dual-clutch transmission that can be shifted under full load

A power-shiftable double clutch transmission for a drive train of a motor vehicle, comprising:

• a drive shaft being rotatable for being coupled with an engine at a drive side of the transmission;
• a final output shaft being rotatable on an output of the transmission;
• a first input shaft and a second input shaft;
• a first switchable clutch selectively coupling the drive shaft and the first input shaft, and a second switchable clutch selectively coupling the drive shaft and the second input shaft;
• a first output shaft;
• a first component transmission coupling the first input shaft and the first output shaft, and a second component transmission coupling the second input shaft and the first output shaft;
• the first component transmission having at least one first gearwheel plane providing a change in a gear ratio between the first input shaft and the first output shaft, and the second component transmission having at least one second gearwheel plane providing a change in a gear ratio between the second input shaft and the first output shaft;
• the at least one first gearwheel plane positioned along a first countershaft and the at least one second gearwheel plane positioned along a second countershaft, wherein the first and second countershafts are positioned in parallel relationship with one another;
• a planetary gear assembly coupling the first output shaft and the final output shaft;
• the planetary gear assembly including a sun gear fixed to the first output shaft;
• the planetary gear assembly further including plurality of planet gears meshed with and rotatable about the sun gear, and a planetary carrier connected to the planet gears and fixed to the final output shaft;
• the planetary gear assembly further including an internal gear meshed with and positioned about the planet gears;
• a first shifting element fixed to the internal gear and positioned adjacent to the planetary carrier and moveable for selectively coupling the internal gear and planetary carrier;
• a spur gear connected to and rotatable with the planetary carrier;
• a first moveable gear disposed about the second countershaft and meshed with the spur gear;
• a second shifting element moveable for selectively coupling the first moveable gear and the second countershaft;
• a first fixed gear fixed to the first output shaft for rotation with the first output shaft;
• a second fixed gear disposed about the first countershaft and meshed with the first fixed gear;
• a second moveable gear disposed about the second countershaft;
• the second shifting element further being moveable for selectively coupling the second moveable gear and the second countershaft;
• a third shifting element positioned between the first input shaft and the first output shaft and moveable for selectively coupling the first input shaft and the first output shaft.