Nine-speed double-clutch automatic transmission and vehicle

Abstract

The invention relates to a nine-speed double-clutch automatic transmission and a vehicle. The nine-speed double-clutch automatic transmission comprises input shafts and output shafts, wherein the input shafts comprises the first input shaft, the second input shaft and the input gear shaft; and the output shafts comprises a first intermediate shaft and a second intermediate shaft. The first intermediate shaft is provided with a first output gear, a first bilateral synchronizer, a first output gear shaft, a fourth output gear and a first unilateral synchronizer, wherein the first output gear shaft is provided with a third output gear and a second bilateral synchronizer; and the second intermediate shaft is provided with a fifth output gear, a third bilateral synchronizer, a second output gear shaft, an eighth output gear and a second unilateral synchronizer, wherein the second output gear shaft is provided with a seventh output gear and a fourth bilateral synchronizer. The nine-speed double-clutch automatic transmission is improved on the basis of an existing seven-speed double-clutch transmission, when nine-speed gear shifting is completed, the numbers of inner core output gears andthe synchronizers can be optimized to the maximum extent, the structure is compact, and the occupied space is small.

Description

technical field [0001] The invention relates to the field of automobile transmissions, in particular to a nine-speed dual-clutch automatic transmission and a vehicle. Background technique [0002] The dual-clutch automatic transmissions currently on the market are mainly 6-speed and 7-speed. With the upgrading of national emission standards, in order to improve the fuel performance of vehicles, major manufacturers are developing and researching gearboxes with more gears. [0003] With the development of today's automobile industry, energy saving and emission reduction have become the main direction of design, and the requirements for the design of transmissions in vehicles are becoming more and more stringent. Therefore, dual-clutch automatic transmissions with high efficiency, high comfort, and high-speed ratio range have gradually become a development trend. The drive train structure and the layout of the parking ratchet in the dual clutch automatic transmission are impor...

AI Technical Summary

Problems solved by technology

Although many shafting designs of dual-clutch automatic transmissions have made great progress, there are still some defects caused by incomplete consideration, which make them insufficient in terms of compact structure, transmission performance and working stability.

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