Patent ID: 8342050

Claim:
A dual clutch transmission comprising: first and second clutches (K 1 , K 2 ) each comprising an input side connected to a drive input shaft (w_an) and an output side 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 idler gear wheels ( 5 , 6 , 7 , 8 , 9 , 10 ); at least one fixed gear wheel ( 1 , 2 , 3 , 4 ) being connected in a rotationally fixed manner on each of the first and the second transmission input shafts (w_K 1 , w_K 2 ), and each of the fixed gear wheels engaging with at least one of the idler gear wheels ( 5 , 6 , 7 , 8 , 9 , 10 ); a plurality of coupling devices (A, B, C, D, E, F) being supported on the first and the second countershafts (w_v 1 , w_v 2 ), each of the coupling devices (A, B, C, D, E, F) coupling an idler gear wheel ( 5 , 6 , 7 , 8 , 9 , 10 ) in a rotationally fixed manner to one of the first and the second countershafts (w_v 1 , w_v 2 ); output gear wheels ( 12 , 13 ), on each of the first and the second countershafts (w_v 1 , w_v 2 ), engaging gearing of an 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 , R 2 , R 3 ) being shiftable; first and second dual gear planes ( 5 - 8 , 7 - 10 ; 5 - 8 , 6 - 9 ), each comprising an idler gear wheel ( 5 , 8 , 9 , 7 , 10 ) supported by the first countershaft (w_v 1 ), an idler gear wheel ( 5 , 8 , 9 , 7 , 10 ) supported by the second countershaft (w_v 1 , w_v 2 ) and a fixed gear wheel ( 1 , 2 , 3 , 4 ) supported by one of the first and the second transmission input shafts (w_K 1 , w_K 2 ), and at least one of the idler gear wheels ( 5 , 6 , 7 , 8 , 9 , 10 ) supported by the first and the second countershafts (w_v 1 , w_v 2 ) in each of the first and the second dual gear planes ( 5 - 8 , 7 - 10 ; 5 - 8 , 6 - 9 ) being utilized for implementing at least two of the gears; and first and second single gear planes ( 6 - 2 , 3 - 9 ; 7 - 3 , 4 - 10 ), each comprising an idler gear wheel ( 5 , 8 , 6 , 9 , 7 , 10 ) supported by one of the first and the second countershafts (w_v 1 , w_v 2 ) and a fixed gear wheel ( 1 , 2 , 3 , 4 ) supported by one of the first and the second transmission input shafts (w_K 1 , w_K 2 ) such that at least one shifting device winding-path gear is shiftable via at least a shifting device (K) on the second countershaft (w_v 2 ), and at least one output coupling winding-path gear is shiftable via disengagement of an output coupling device (S_ab 1 ) associated with the output gear wheel ( 12 ) on the first countershaft (w_v 1 ).