METHOD FOR OPERATION OF A TRANSMISSION UNIT
1 Assignment
0 Petitions
Accused Products
Abstract
A method of operating a transmission unit, in particular a main transmission group of a dual-clutch transmission of multi-group design. The transmission unit has a first input shaft and at least one first shifting element, that is associated with the first input shaft, that can be disengaged and engaged for engaging a gear step, and a second input shaft and at least one second shifting element, that is associated with the second input shaft, that can be disengaged and engaged for engaging a gear step. The at least one first shifting element and/or the at least one second shifting element is/are engaged, without involvement in any drive power flow, in order to minimize rotational speed differences in the transmission unit.
22 Citations
31 Claims
-
1-15. -15. (canceled)
-
16. A method of operating a transmission unit (2) of a dual-clutch transmission (1) of a multi-group design, the transmission unit comprising a first input shaft (EW1), and at least one first shifting element (S11, S12) being associated with the first input shaft (EW1) and being engagable and disengageable for engaging a gear step, a second input shaft (EW2), and at least one second shifting element (S21, S22) being associated with the second input shaft (EW2) and being engagable and disengageable for engaging a gear step, the method comprising the steps of:
engaging at least one of, the at least one first shifting element (S11, S12) and the at least one second shifting element (S21, S22), without involvement in any drive power flow, to minimize rotation speed differences in the transmission unit. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30)
-
31. A method of operating a main transmission group of a dual-clutch transmission of multi-group design, the main transmission group comprising first and second input shafts, a first shift element being engagable to couple a first gear step to the first input shaft, a second shift element being engagable to couple a second gear step to the first input shaft, a third shift element being engagable to couple a third gear step to the second input shaft, and a fourth shift element being engagable to couple a fourth gear step to the second input shaft, the method comprising the step of:
engaging at least one of the first, the second, the third and the fourth shifting elements, without involvement in any drive power flow, so as to minimize rotational speed differences in the main transmission group.
Specification