Multi-gear transmission achieved in mode of planetary gear structure

A multi-speed transmission, planetary gear technology, applied in vehicle gearboxes, gear transmissions, components with teeth, etc., can solve the problems of difficulty in providing transmission ratio series meshing efficiency, complexity, etc., and achieve sufficient transmission range and good classification. , compact structure

Inactive Publication Date: 2015-12-02
ZHAOQING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to overcome the large number of components and complex structure in the existing automatic transmission technology, especially the difficulty in providing a slightly progressive, well-graded transmission ratio series and good meshing efficiency, and provide A multi-speed transmission with planetary gear structure

Method used

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  • Multi-gear transmission achieved in mode of planetary gear structure
  • Multi-gear transmission achieved in mode of planetary gear structure

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Embodiment Construction

[0096] The present invention is described in detail below in conjunction with accompanying drawing:

[0097] figure 1 An exemplary embodiment of an automatic transmission unit, which is designed as a motor vehicle automatic transmission unit, is shown. The automatic transmission unit has four planetary gear sets P1, P2, P3, P4. The first planetary gear set P1, the second planetary gear set P2, the third planetary gear set P3 and the fourth planetary gear set P4 are successively arranged along the main rotation axis. All planetary gear sets P1, P2, P3, P4 of the automatic transmission unit have single-stage planetary gear sets. The transmission unit has six shifting elements C1 , C2 , C3 , B1 , B2 , B3 . The shifting elements are provided for shifting exactly nine forward automatic transmission gears V1, V2, V3, V4, V5, V6, V7, V8, V9 and one reverse gear VR. However, the automatic transmission unit can also be operated with only eight forward transmission gears, for exampl...

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Abstract

The invention discloses a multi-gear transmission achieved in the mode of a planetary gear structure and belongs to the technical field of automatic transmissions. The problems that in the prior art, the automatic transmissions are large in number of components and complex in structure, and particularly slightly-progressive and well-graded transmission ratio series and good meshing efficiency are hard to provide are solved. The multi-gear transmission comprises four planetary gear sets which are arranged one after another along a main rotating shaft and six gear shifting switching elements, and the gear shifting switching elements are allowed to be selectively manipulated so that nine forwarding gears and one reversing gear can be formed between an input shaft and an output shaft of the transmission. The input shaft is connected with a fourth shaft connected to a first sun gear through a first clutch in a disengaging mode and connected with an eighth shaft through a second clutch in a disengaging mode, and the eighth shaft is connected with a first planet carrier and a second gear ring and connected to a shell through a first brake. A fifth shaft is connected with a second sun gear and connected to the shell through a second brake. The output shaft is connected with a fourth planet carrier.

Description

technical field [0001] The invention belongs to the technical field of automatic transmissions, and relates to an automatic transmission unit, in particular to a power transmission system for motor vehicles, and in particular to a multi-speed transmission with a planetary gear structure. Background technique [0002] The powertrain of a motor vehicle consists of an engine, a multi-speed transmission, and a differential or final drive. A multi-speed transmission increases the overall operating range of the vehicle by allowing the engine to be operated multiple times through its torque range. The number of forward speed ratios (forward gears) available in the transmission determines the number of times the engine torque range is repeated. A low number of forward gears limits the overall speed range of the vehicle and thus requires a relatively large engine to produce a wide speed and torque range. [0003] At present, the four-speed automatic transmission, especially the aut...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H3/66F16H3/76
CPCF16H3/666F16H3/76F16H2200/0065F16H2200/2012F16H2200/2046
Inventor 薛焕樟张建邓洪超张贵林彭晓君何月圆朱胜龙
Owner ZHAOQING UNIV
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