| 摘要 |
The invention relates to a dual-clutch transmission having a countershaft design for a vehicle, comprising two clutches (K1, K2), the input sides of which are connected to a drive shaft (AN) and the output sides of which are respectively connected to one of two transmission input shafts (EW1, EW2) arranged coaxial to a main shaft axis, a respective partial transmission being associated with each of the transmission input shafts, at least two countershafts (VW1, VW2), several gear planes (I, II, III, V, VI, VII), with which gear ratio steps (A, B, C, D, E, F, G, H, I) are associated, and at least one output shaft (AB), which can be connected to the partial transmissions by means of an output gear plane (IV), wherein only six gear planes (I, II, III, V, VI, VII) having at least nine associated gear ratio steps (A, B, C, D, E, F, G, H, I) can be provided by means of only four double shifting elements (S1-S2, S3-S4, S5-S6, S7-S8) and by means of at least one single shifting element (S9, S10), wherein each countershaft (VW1, VW2) can be coupled to four gear ratio steps (A, B, C, D; E, F, G, H) by means of double shifting elements (S1-S2, S3-S4, S5-S6, S7-S8) and wherein one of the transmission input shafts (EW1, EW2) can be coupled to a gear ratio step (I) by means of a single shifting element (S9). |
