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Eleven-gear transmission based on planetary gear train

A technology for planetary gear trains and transmissions, applied in vehicle gearboxes, gear transmissions, components with teeth, etc., can solve problems such as fuel economy, responsiveness, and stability limitations, and improve power transmission performance and fuel economy, simple structure and optimized speed ratio

Active Publication Date: 2020-12-15
SHAANXI FAST GEAR CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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.

Method used

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  • Eleven-gear transmission based on planetary gear train
  • Eleven-gear transmission based on planetary gear train
  • Eleven-gear transmission based on planetary gear train

Examples

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Embodiment Construction

[0079] The realization of more and more optimized gear functions of the transmission depends on the planetary gear train, and the combination form of the planetary gear, especially the selection of the planetary gear, the position setting and layout of the power transmission components, make the overall planetary gear train have different characteristics. Therefore, it is necessary to improve the planetary gear train with fewer components, more gears, higher efficiency and lower cost to meet the vehicle's requirements on transmission durability, power transmission efficiency, and size. The core of the present invention is to provide a multi-speed transmission based on a planetary gear train, which includes four planetary rows, eight torque-transmitting device mechanisms or control units, and seven shift assemblies including clutches and brakes, capable of providing At least eleven forward gears and at least two reverse gears.

[0080] In order to illustrate the technical solu...

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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 ...

Claims

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Application Information

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IPC IPC(8): F16H3/62F16H47/08
CPCF16H3/62F16H47/08F16H2200/0073F16H2200/0086F16H2200/2012F16H2200/2048
Inventor 王凯峰冯浩成严鉴铂刘义马一鸣沈航杨国柱
Owner SHAANXI FAST GEAR CO
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