Three planetary six-speed automatic transmission and car

Abstract

The invention relates to the field of automobiles, and discloses a three-planet-row six-speed automatic transmission and an automobile. The three-planet-row six-gear automatic transmission comprises a first planet row, a second planet row and a third planet row, wherein the first planet row comprises a first gear ring, a first inner planet gear group and a first outer planet gear group which are meshed with each other, a first sun gear and a first planet carrier; the second planet row comprises a second gear ring, a second planet gear group, a second sun gear and a second planet carrier; the third planet row comprises a third gear ring, a third planet gear group, a third sun gear and a third planet carrier; the first gear ring, the second gear ring and the third sun gear are sequentially and fixedly connected into a whole; the first gear ring is connected to the transmission housing through a first brake member; the first planet carrier is connected with the second planet carrier through a first torque transmission member; the second planet carrier is connected with the third planet carrier through a second torque transmission member; the third planet carrier is connected with the second sun gear through a third torque transmission member and further connected to the transmission housing through a second brake member.

Description

technical field [0001] The invention relates to the technical field of automobiles, in particular to a three-planetary six-speed automatic transmission and an automobile. Background technique [0002] The gear train mechanism of the electronically controlled hydraulic transmission generally includes a plurality of planetary rows. The power of the engine is transmitted to the planetary gear transmission mechanism through the hydraulic torque converter for transmission and then output. The volume, weight, efficiency and carrying capacity of an automatic transmission are directly related to the planetary gear mechanism. The more the number of gears in the automatic transmission transmission system, the lower the fuel consumption of the car and the better the economy. However, with the increase in the number of gears, the number of planetary rows, the number of operating clutches and brakes are also increasing, satisfying the theoretical level. Than the design is even more dif...

AI Technical Summary

Problems solved by technology

Both GM and Hyundai’s schemes are implemented with three planetary rows, the difference lies in the position of the clutch. In Hyundai’s mass-produced series A6MF and A6LF, one planetary row uses a double planetary gear set structure, which is compared with a single planetary gear set structure. , when other conditions are the same, the ring gear can get reverse motion; modern and common solutions are realized with 2 clutches and 3 brakes, the number of brakes is more than the number of clutches, and the brakes are finally achieved through friction The steel teeth are connected to the box, and more brakes will undoubtedly increase the difficulty of processing and manufacturing the box, and because the box material is generally aluminum alloy, more brakes will undoubtedly be able to ensure strength while achieving a lightweight design cause difficulty

Images