Patent ID: 8359939

Claim:
A double clutch transmission comprising: first and second clutches (K 1 , K 2 ), each comprising an input side connected to a drive shaft (w_an) and an output side connected to one of first and second transmission input shafts (w_K 1 , w_K 2 ) arranged coaxially with each other; at least first and second countershafts (w_v 1 , w_v 2 ) rotatably supporting toothed idler gearwheels ( 5 , 6 , 7 , 8 , 9 , 10 ); toothed fixed gearwheels ( 1 , 2 , 3 , 4 ) being connected in a rotationally fixed manner one of to the first and the second input shafts (w_K 1 , w_K 2 ) and engaging at least some of the idler gears ( 5 , 6 , 7 , 8 , 9 , 10 ); a plurality of coupling devices (A, B, C, D, E, F), each coupling one of the idler gearwheels ( 5 , 6 , 7 , 8 , 9 , 10 ) to one of the first and the second countershafts (w_v 1 , w_v 2 ) in a rotationally fixed manner; the first and the second countershafts (w_v 1 , w_v 2 ), each supporting one power take-off gear ( 12 , 13 ) meshing with a gearing of an ouput shaft (w_ab) such that a plurality of power shiftable forward gears ( 1 , 2 , 3 , 4 , 5 , 6 ) and at least one reverse gear (R 1 , R 2 , R 3 , R 4 , R 5 ) are shiftable; a gear stage (i_ 3 ) of a third forward gear (G 3 ) and a gear stage (i_ 5 ) of a fifth forward gear (G 5 ) each being assigned to a single gear plane ( 5 - 1 , 2 - 8 ) in which an idler gearwheel ( 5 , 8 ) of the first and the second countershafts (w_v 1 , w_v 2 ) is assigned to a fixed gear ( 1 , 2 ) of one of the first and the second transmission input shafts (w_K 1 , w_K 2 ); a gear stage (i_ 2 ) of a second forward gear (G 2 ), a gear stage (i_ 4 ) of a fourth forward gear (G 4 ), a gear stage (i_ 6 ) of a sixth forward gear ( 6 ) and a gear stage (i_R) of at least one reverse gear being assigned to double gear planes ( 6 - 9 , 7 - 10 ) in which an idler gearwheel ( 6 , 9 ; 7 , 10 ) of the first and the second countershafts (w_v 1 , w_v 2 ) in each double gear plane ( 6 - 9 , 7 - 10 ) is assigned to one fixed gearwheel ( 1 , 2 , 3 , 4 ) of one of the first and the second transmission input shafts (w_K 1 , w_K 2 ); and at least one idler gearwheel ( 6 , 9 ; 7 , 10 ) in each of the double gear planes ( 6 - 9 , 7 - 10 ) is usable for at least two gears such that at least one power shiftable winding path gear is shiftable via at least one of a first shift element (K) and a second output coupling device (S_ab 2 ) assigned to a second power take-off gear ( 13 ) being disengaged.