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
View PDF6 Cites 15 Cited by
  • 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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • 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

Experimental program
Comparison scheme
Effect test

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...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
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
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap