Patent ID: 8365623

Claim:
A dual-clutch transmission with first and second clutches (K 1 , K 2 ) whose input sides are connected to a drive input shaft (w_an) and whose output sides are respectively connected to one of first and second transmission input shafts (w_K 1 , w_K 2 ) arranged coaxially with one another, toothed gearwheels, designed as idler gearwheels ( 01 , 02 , 03 , 04 , 05 , 06 ), being mounted to rotate on at least first and second countershafts (w_vorgelege 1 , w_vorgelege 2 ), toothed gearwheels, designed as fixed gearwheels ( 09 , 10 , 11 ), being rotationally fixedly connected to the first and the second transmission input shafts (w_K 1 , w_K 2 ) and at least partially engage with the idler gearwheels ( 01 , 02 , 03 , 04 , 05 , 06 ), a plurality of coupling devices (A-B, C, D-E, D, E-F, F) for coupling an idler gearwheel ( 01 , 02 , 03 , 04 , 05 , 06 ) with one of the first and the second countershafts (w_vorgelege 1 , w_vorgelege 2 ), a first drive output gearwheel ( 07 , 08 ) fixedly supported by the first countershaft (w_vorgelege 1 ) and coupled with teeth of a drive output shaft (w_ab), a second drive output gearwheel ( 07 , 08 ) fixedly supported by the second countershaft (w_vorgelege 2 ) and coupled with the teeth of the drive output shaft (w_ab), and at least one shifting element (G) for coupling the first and the second transmission input shafts (w_K 1 , w_K 2 ) with one another such that at least six shift-under-load forward gears ( 1 , 2 , 3 , 4 , 5 , 6 ) and at least one reverse gear (RA 1 , R 1 ) can be engaged, wherein the transmission has either three wheel planes ( 01 - 04 ; 02 - 05 ; 03 - 06 ) or four wheel planes ( 01 - 04 , 01 - 09 ; 02 - 05 , 02 - 04 ; 03 - 11 , 03 - 05 ; 12 - 06 ) such that the shifting element (G) engages at least one shift-under-load winding gear.