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Multi-gear transmission and planetary gear train thereof

A technology of planetary gear train and multi-speed transmission, which is applied in vehicle gearboxes, gear transmissions, belts/chains/gears, etc., can solve problems such as fuel economy, response dynamics, and stability limitations, and achieve overall design Compactness, short transmission length, and the effect of satisfying durability

Active Publication Date: 2015-09-09
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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  • Multi-gear transmission and planetary gear train thereof
  • Multi-gear transmission and planetary gear train thereof
  • Multi-gear transmission and planetary gear train thereof

Examples

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Embodiment Construction

[0074] At the heart of the present invention is the provision of a planetary gear train comprising four planetary rows and six torque transmitting device mechanisms or control units capable of providing at least nine forward gears and at least one reverse gear.

[0075] Another core of the present invention is to provide a multi-speed transmission provided with the planetary gear train.

[0076] In order to enable those skilled in the art to better understand the solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0077] The explanations in the description of the present invention are limited to implementing exemplary solutions, and descriptions of unnecessary parts are omitted. In the description of the present invention, the same components are represented by the same symbols in different drawings. In specific implementation descriptions, numbers and lette...

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Abstract

The invention discloses a planetary gear train to be used for a multi-gear transmission. At least nine available forward gears and at least one available reverse gear can be obtained. The planetary gear train comprises a first planet row, a second planet row, a third planet row and a fourth planet row. Each planet row comprises a sun gear, a planet carrier and a gear ring. Components and connection members of the planet rows can form seven rotation elements. A gear shifting component comprises two clutches and four brakes. The clutches are arranged among the selected rotation elements of the rotation elements, and the brakes are arranged between the selected rotation elements of the rotation elements and fixing parts. The planetary gear train has more gears and optimal speed ratio, the power transmission performance and the fuel economy of the cars can be improved apparently, and the planetary gear train is short, compact in overall design, capable of meeting requirements of cars for transmission durability, power transmission efficiency, size, costs and the like well. The invention further discloses an automatic transmission with the planetary gear train.

Description

technical field [0001] The invention relates to the technical field of automobiles, in particular to a multi-speed transmission and a planetary gear train suitable for commercial vehicle hydraulic automatic transmissions. 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]...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H3/62F16H57/023
CPCF16H3/62F16H57/023F16H2200/0004F16H2200/003F16H2200/2012F16H2306/00F16H3/66F16H2200/0065F16H2200/2046
Inventor 李大开严鉴铂王顺利刘义王凯峰王亚锋张海涛周能文
Owner SHAANXI FAST GEAR CO
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