Dual-clutch automatic transmission

Abstract

The invention provides a dual-clutch automatic transmission. The dual-clutch automatic transmission comprises seven forward gears and a reverse gear, wherein a driving gear of a fifth gear, a driving gear of a first gear, a driving gear of a third gear and are respectively independently and fixedly arranged on a first input shaft and a driving gear of a second gear and a driving gear of a fourth gear are respectively independently and fixedly arranged on a second input shaft. Ring gears which correspondingly are engaged with the driving gears are sleevingly arranged on the first input shaft and the second input shaft, the driving gear of the fifth gear is simultaneously used as the driving gear of a seventh gear and the driving gear of the second gear is simultaneously used as the driving gear of the reverse gear so that a reverse rod is not needed. The driving gear of the fourth gear is simultaneously used as the driving gear of a sixth gear. The dual-clutch automatic transmission has the advantages that the reverse rod is not needed; the radial direction size within the dual-clutch automatic transmission is reduced so that the assembly of the dual-clutch automatic transmission is easier to assemble; automobile lightening is easier to achieve. Simultaneously, a double-tooth structure is adopted in the rear gear upon driving, thereby being beneficial to allocation and adjustment to the speed ratio of the second gear and the reverse gear and the requirement of thermal capacity of clutch upon selecting reverse gear can be reduced.

Description

technical field [0001] The invention relates to the field of automobile transmissions, in particular to a dual-clutch automatic transmission. Background technique [0002] 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 important components of the entire transmission, and are also the primary conditions for subsequent mechanical hardware design and software design. Also getting higher and higher. [0003] For the transmission system, in order to obtain better power and economy, a wider speed ratio range and a more reasonable speed r...

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 makes them exist in the rationality of internal space layout, compact structure, transmission performance and working stability. insufficient

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