Eleven-gear transmission based on planetary gear train

Abstract

The invention relates to a transmission, and particularly relates to an eleven-gear transmission based on a planetary gear train. The eleven-gear transmission based on the planetary gear train solvesthe technical problem that an existing four-speed transmission and an existing six-speed transmission have limitations in the aspects of fuel economy, response power performance, stability and the like. The eleven-gear transmission based on the planetary gear train comprises a transmission shell and the planetary gear train. The planetary gear train comprises four planetary rows and seven gear shifting assemblies, wherein the four planetary rows and the seven gear shifting assemblies are arranged on the same shaft system; eight rotating bodies are formed among the four planetary row assembliesthrough connecting components such as rotating shafts; the gear shifting assemblies change the degree of freedom of the planetary gear train through clutches and brake; and different speed ratio transmission between an input shaft and an output shaft can be achieved through combination and separation of the different assemblies, and finally the gear shifting speed of at least eleven forward gearsand at least two reverse gears can be obtained. The eleven-gear transmission based on the planetary gear train has a more optimized speed ratio, and the power transmission performance and fuel economy of a vehicle are remarkably improved.

Description

technical field [0001] The invention relates to a transmission, in particular to an eleven-speed transmission based on a planetary gear train. Background technique [0002] The planetary gear train is the core mechanism of the hydraulic automatic transmission AT (Automatic Transmission). It is mainly composed of planetary rows, clutches and brakes. By controlling the clutches and brakes, the components of the planetary row can be interconnected in different combinations. Thereby realizing the conversion of various transmission ratios. [0003] When the transmission has more optional gears, it can be designed more optimally. Through the transmission with more gears and more optimized speed ratio, the engine can meet the needs of different vehicle speeds while working in the high-efficiency zone. , so that the vehicle can have more economical fuel consumption and better power performance. [0004] At present, four-speed and six-speed transmissions are the most common on the ...

AI Technical Summary

Problems solved by technology

However, from the perspective of technological development, there are limitations in terms of fuel economy, responsiveness, and stability, and continuous improvement and design updates are required.

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