Double-clutch transmission

Abstract

The invention discloses a double-clutch transmission. The double-clutch transmission comprises an inner input shaft, an outer input shaft and two output shafts, wherein the inner input shaft and the outer input shaft are coaxially embedded. The transmission is provided with seven forward gears and one reverse gear, odd gear driving gears are arranged on the inner input shaft, even gear driving gears are arranged on the outer input shaft, the second gear and the reverse gear share a driven gear, the fourth and sixth gears and the fifth and seventh gears (or the third and seventh gears) share the driving gears. A plurality of driven gears are arranged on a first output shaft, a reverse gear assembly and the driven gears are arranged on a second output shaft, and the reverse gear assembly andthe adjacent driven gears are designed to a double-gear structure which can be switched. Because different clutches are used in the first gear and the reverse gear separately, the first gear and thereverse gear can be pre-hung at the same time when a neutral gear starts; the double-gear structure is formed by joining of the reverse gear assembly with the adjacent driven gears, thus the transmission of reverse power is realized, and a reverse shaft is cancelled; and the axial length of the transmission can be reduced by sharing the driving gears or the driven gears.

Description

technical field [0001] The invention belongs to the technical field of vehicle transmissions, in particular to a dual-clutch transmission. Background technique [0002] Among the automatic transmissions currently in use, AT (Automatic Transmission, hydraulic automatic transmission) is difficult to be more comprehensively applied because of its complex structure, high manufacturing cost, difficulty in manufacturing, high fuel consumption, and low efficiency; AMT (Automated Mechanical Transmission, Electromechanical automatic transmission) has low manufacturing cost, but it is difficult to be popularized due to the disadvantages of shift power interruption, shift noise and shift shock that affect comfort; CVT (Continuously Variable Transmission, mechanical continuously variable automatic transmission) can Realize continuously variable speed, but it is also difficult to be widely used due to low efficiency and high cost. [0003] The dual-clutch transmission integrates two gea...

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is: aiming at the defects that the existing dual-clutch transmission needs to be provided with an additional reverse gear shaft, the transmission path of the reverse gear is complicated, and the number of gears meshes is large, which is not conducive to the compactness of the space layout of the transmission. The reverse gear power flow structure of the dual-clutch transmission can be applied to the drive device of the external input shaft, which can only realize one direction of rotation, and the cost is lower and the design is more compact

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