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Nine-gear planetary automatic transmission

An automatic transmission and planetary technology, which is applied in transmissions, gear transmissions, belts/chains/gears, etc., can solve the problems of uneven ratio between forward gears and fewer forward gears, and achieve excellent overall performance, reduce types, and reduce The effect of weight and cost

Inactive Publication Date: 2010-10-06
CHINA NORTH VEHICLE RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problem that when the transmission adopts multiple planetary rows and multiple brakes in the prior art, the obtained forward gears are few and the ratios of the forward gears are uneven

Method used

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  • Nine-gear planetary automatic transmission
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  • Nine-gear planetary automatic transmission

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Embodiment Construction

[0028] Such as figure 1 As shown, the automatic transmission of this scheme is suitable for the vertical transmission scheme of FR (front-rear drive) vehicles. Among them, the planetary rows are arranged in order, and the transmission components are used to connect each planetary row. The input shaft is connected to the input member ①, which is generally the turbine shaft of the hydraulic torque converter, and is used to transmit the power of the engine through the hydraulic torque converter. to the transmission. The output shaft is connected with the output member ②, and the power is transmitted to the left and right drive wheels through the differential. The variator is substantially symmetrical about the center of rotation, figure 1 The lower part of the center of rotation is omitted in , and will not be explained in the following description.

[0029] The planetary row PGS1 includes three rotating parts: the sun gear S1, the ring gear R1 and the planet carrier CA1. The ...

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Abstract

The invention provides a nine-gear planetary automatic transmission of a vehicle drive system, which comprises planetary lines, input components, output components, transmission components, brakes and clutches. The input components and the output components are arranged on the two ends and are respectively connected with an input shaft and an output shaft, and four planetary lines, five transmission components, four brakes and two clutches are used. Compared with the prior art, due to adopting the four planetary lines, four brakes and two clutches with an additional forward gear, the invention realizes the purpose of nine forward gears with one brake reduced, thereby reducing the weight and cost of the transmission. Particularly, the four planetary lines are all single-star simple planetary lines, and the gear parameters of the planetary lines have two pairs of identical K values, further reducing the types of gears, and simultaneously obtaining the transmission ratio property with the optimal overall performance.

Description

technical field [0001] The invention relates to a transmission device in the mechanical field, in particular to a nine-speed planetary automatic transmission of an automobile drive system. Background technique [0002] As an automatic transmission for vehicles, the power of the internal combustion engine is transmitted to the input shaft of the transmission through the torque converter. After the current gear is shifted, the power is output from the output shaft and transmitted to the left and right drive wheels through the differential. Most of the transmissions are transmission solutions composed of multiple planetary rows, brakes and clutches. The automatic transmission disclosed in US Patent No. 7,163,484B2 is a typical example. It utilizes four planetary rows, five brakes and two clutches to realize There are eight forward gears, but the number of brakes adopted in this technical scheme is large, and the output gears are few, which is not advantageous in weight and volu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H3/66
CPCF16H3/66
Inventor 王明成石彦辉冯光军姜宏暄齐春雨徐飞李翠芬韩宇石李志伟刘越刘宝铎李吉元衣超王景霞王颖楠贾爽
Owner CHINA NORTH VEHICLE RES INST
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