Patent ID: 8051732
Filing Date: 2011-11-08
Classification: F16H,Y10T

Abstract:
1. A load-shiftable group transmission having at least first and second input constants (E 1 , E 2 ) and a dual clutch ( 1 ) which comprises first and second individual clutches (K 1 , K 2 ) providing a first power path from the first individual clutch (K 1 ) via a direct forward gear stage (V 15 of a shifting program) to a main shaft ( 10 ), with fore and after forward gear stages (V 14 and V 16 ) disposed in the shifting program directly adjacent to the direct gear stage (V 15 ) with a power path extending via the second individual clutch (K 2 ) and a countershaft ( 14 ), a hollow shaft ( 96 ) arranged concentrically with respect to the countershaft ( 14 ) and supporting at least first and second countershaft gearwheels ( 88 , 13 ) of which the first countershaft gearwheel ( 88 ) belongs to the second input constant (E 2 ), and a first clutch gearwheel ( 8 ) arranged closest to the dual clutch ( 1 ) belongs to the first input constant (E 1 ), the power path of the after gear stage (V 16 ) extending from the second individual clutch (K 2 ) via the first input constant (E 1 ), the second input constant (E 2 ) and the main shaft ( 10 ) which is rotationally fixedly coupled to a second gearwheel ( 9 ) of the second input constant (E 2 ), the hollow shaft ( 96 ) including a first shift element (S 1 ) for rotationally coupling and decoupling the second input constant (E 2 ) from the hollow shaft ( 96 ).