An eleven-speed transmission based on a planetary gear train

A planetary gear train and transmission technology, which is applied in vehicle gearboxes, geared components, gear transmissions, etc., can solve problems such as fuel economy, responsiveness, and stability limitations, and improve power transmission performance and fuel economy, high reliability, and low cost effects

Active Publication Date: 2021-07-27
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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  • An eleven-speed transmission based on a planetary gear train
  • An eleven-speed transmission based on a planetary gear train
  • An eleven-speed transmission based on a planetary gear train

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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 present invention relates to a transmission, in particular to an eleven-speed transmission based on a planetary gear train, which solves the limitations of existing four-speed and six-speed transmissions in terms of fuel economy, responsiveness, and stability. question. The eleven-speed transmission based on the planetary gear system of the present invention includes a transmission housing and a planetary gear system. The planetary gear system includes four planetary rows and seven shifting assemblies arranged on the same shaft system. The four planetary row assemblies pass through The rotating shaft and other connecting components form eight rotating bodies. The shifting component uses clutches and brakes to change the degree of freedom of the planetary gear train. The shifting speed of at least eleven forward gears and at least two reverse gears is obtained, with a more optimized speed ratio, which significantly improves the power transmission performance and fuel economy of the vehicle.

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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Patent Type & Authority Patents(China)
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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