Double clutch transmission
AssigneeDaimler AG
InventorCarsten Gitt
Life of this patent
Estimating the term…
Abstract
In a double clutch transmission with a winding path power flux arrangement, which has two countershafts arranged coaxially with respect to one another and with seven forward gears and a plurality of reverse gears, for selected gears the power flux extends from a part region of the transmission forward and then again back to another part region of the transmission in such a way that only four shift clutches are needed for shifting through all the gears.
Claims25
A double clutch transmission with a winding-path arrangement, comprising two countershafts (16, 13) arranged coaxially with respect to one another, a number of transfer stages (ZE1, ZE6, ZE5, ZE4), a reverse gear (R1) with a power flux extending via more than two of the transfer stages (ZE1, ZE6, ZE5, ZE4), at least one further reverse gear (R2), seven forward gears (V1 to V7), and only four shift clutch planes (SKE1 to SKE4) being provided.
A double clutch transmission including two power shift clutches a winding-path arrangement, comprising two countershafts (16, 13) arranged coaxially with respect to one another, a plurality of gearwheel planes (ZE1 to ZE7) following one another axially as seen from input end to the output end of the transmission, said transmission including at least one gear (V1, R1), with a power flux extending via more than two gearwheel planes (ZE1, ZE6, ZE5, ZE4 or ZE1, ZE6, ZE5, ZE4) and extending axially, in a part region (ZE6 to ZE3 and ZE6 to ZE4), of the transmission from the output end back toward of the input end.
A method for shifting a double clutch transmission including two power shift clutches a winding path arrangement, comprising two countershafts (16, 13) arranged coaxially with respect to one another, a plurality of gearwheel planes (ZE1 to ZE7) following one another axially, as seen from input end to the output end of the transmission, said transmission including at least one gear (V1, R1), with a power flux extending via more than two gearwheel planes (ZE1, ZE6, ZE5, ZE4 or ZE1, ZE6, ZE5, ZE4) and extending axially, in a part region (ZE6 to ZE3 and ZE6 to ZE4), of the transmission from the output end back toward of the input end, wherein for a sequential gear change from a source gear (VI) to a target gear (V2), only one shift clutch (SK3) is actuated.
Dependencies are inferred from the claim text.