Arrangement of 6AT power drive system

Abstract

The invention discloses arrangement of a 6AT power drive system, belonging to the field of vehicle manufacture. A shell, a power input shaft, a speed shifting mechanism and a gear shifting part are provided, wherein the speed shifting mechanism comprises an input planetary gear set, an output planetary gear set and a counteraction planetary gear set; the gear shifting part comprises a first clutch, a second clutch, a one-way clutch, a first brake, a second brake and a third brake; the first clutch and the second clutch are axially and symmetrically arranged at the rear end of the speed shifting mechanism in parallel; and the one-way clutch, the first brake, the second brake and the third brake are compactly arranged outside the speed shifting mechanism. The technical scheme has the advantages of ensuring compact structure and short axial distance of the speed shifting mechanism by compactly arranging the gear shifting part around the speed shifting mechanism, reducing the varieties of parts by symmetrically arranging the first clutch and the second clutch, lowering the design cost and effectively preventing the error installation when in assembly.

Description

technical field [0001] The invention relates to the technical field of automobile manufacturing, in particular to an arrangement of a 6AT power transmission system. Background technique [0002] The speed change mechanism in the automatic transmission (Automatic Transmission) is controlled by the shift actuator, transmits the speed and torque from the hydraulic torque converter, and converts the torque into multi-stage transmission to the output shaft. By increasing the number of forward gears of the transmission, the fuel economy and driving comfort of the vehicle can be improved. Therefore, increasing the number of gears has always been the development trend of the automatic transmission industry. [0003] As we all know, in an automatic transmission, the shift between gears is realized by the cooperation of two parts, one part is the speed change mechanism, which is composed of multiple planetary gear sets; the other part is the shift actuator, which is used to transmit ...

AI Technical Summary

Problems solved by technology

Increasing the number of gears is mainly achieved by increasing and recombining the two parts of the structure. With the increase in the number of gears, the volume of the transmission is also getting larger and larger, which limits the layout of the whole vehicle, especially the layout of the front cabin. This problem is especially obvious for the automatic transmission with transverse front drive arranged in the front cabin

In addition, with the increase of friction elements, the efficiency reduction caused by friction loss is inevitable

[0004] In the process of realizing the present invention, the inventor found that the prior art has at least the following problems: the volume of the automatic transmission increases with the increase of the number of gears, and at the same time, the friction elements cause a reduction in efficiency

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