Patent ID: 8171813

Claim:
A double clutch transmission comprising: first and second clutches (K 1 , K 2 ) each having an input side connected to a drive shaft (w_an) and output respectively connected to one of first and second transmission input shafts (w_K 1 , w_K 2 ) arranged coaxially with one another; at least first and second countershafts (w_v 1 , w_v 2 ) rotatably supporting a plurality of idler gear wheels ( 5 , 6 , 7 , 8 , 9 , 10 ) a plurality of fixed gear wheels ( 1 , 2 , 3 , 4 ) being connected in a rotationally fixed manner to one of the first and the second transmission input shafts (w_K 1 , w_K 2 ) and each engaging at least one of the plurality of idler gear wheels ( 5 , 6 , 7 , 8 , 9 , 10 ); a plurality of coupling devices (A, B, C, D, E, F) for each coupling one of the idler gear wheels ( 5 , 6 , 7 , 8 , 9 , 10 ) in a rotationally fixed manner to a countershaft (w_v 1 , w_v 2 ); a respective drive output gear wheel ( 12 , 13 ) being supported on each of the first and the second countershafts (w_v 1 , w_v 2 ) and engaging gearing of a drive output shaft (w ab) such that several power shiftable forward gears ( 1 , 2 , 3 , 4 , 5 , 6 ) and at least one reverse gear (R 1 ) are engagable; first and second dual gear planes ( 5 - 8 , 7 - 10 ; 5 - 8 , 6 - 9 ), each of the first and the second dual gear planes comprising first and second idler gear wheels ( 5 , 8 , 9 , 7 , 10 ) with the first idler gear wheel being supported on the first countershaft (w_v 1 , w_v 2 ) and the second idler gear wheel being supported on the second countershaft (w_v 2 ), and each of the first and the second idler gear wheels ( 5 , 8 , 9 , 7 , 10 ) engaging a fixed gear wheel ( 1 , 2 , 3 , 4 ) connected to one of the first and the second transmission input shafts (w_K 1 , w_K 2 ); at least one of the first and the second idler gear wheels ( 5 , 6 , 7 , 8 , 9 , 10 ) in each of the first and second dual gear planes ( 5 - 8 , 7 - 10 ; 5 - 8 , 6 - 9 ) being utilized for implementing at least two gears; and first and second single gear planes ( 6 - 2 , 3 - 9 ; 7 - 3 , 4 - 10 ), each of the first and the second single gear planes comprising an idler gear wheel ( 5 , 8 ; 6 , 9 ; 7 , 10 ) which is supported on one of the first and the second countershafts (w_v 1 , w_v 2 ) and engages a fixed gear wheel ( 1 , 2 , 3 , 4 ) connected to one of the first and the second transmission input shafts (w_K 1 , w_K 2 ) such that at least one winding-path gear can be implemented via at least one, non-engaged output coupling device (S_ab 1 , S_ab 2 ), assigned to one of the drive output gear wheels ( 12 , 13 ).