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Seven-gear planet automatic gearbox

An automatic transmission and planetary technology, applied in the field of vehicle transmission, can solve the problems of large volume and weight, and achieve the effect of reducing volume and weight and compact structure

Active Publication Date: 2014-01-22
北方汤臣传动科技有限公司
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AI Technical Summary

Problems solved by technology

At present, the mainstream seven-speed planetary automatic transmission for road vehicles has a large transmission ratio range, and has four planetary rows, and has a large volume and weight.

Method used

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  • Seven-gear planet automatic gearbox
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Embodiment Construction

[0028] In order to make the purpose, content and advantages of the present invention clearer, the specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0029] The seven-speed planetary automatic transmission provided by the invention is suitable for road 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 front and rear axles or the left and right drive wheels through the transfer case or differential. The planetary automatic transmission is completely symmetrical wi...

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Abstract

The invention belongs to the technical field of vehicle transmission and particularly relates to a seven-gear planet automatic gearbox which can enable two forward gears to become overgears, is large in the range of transmission ratio and good in performance and meets operating requirements of wheeled vehicles. The seven-gear planet automatic gearbox comprises three planet rows, an input component, an output component, four transmission mechanisms, four brakes and two clutches. Therefore, the seven-gear planet automatic gearbox achieves seven forward gears, the range of the transmission ratio can reach 8.941, the three planet rows are all single-star simple planet rows, and the k value is within 1.7-2.6. Furthermore, the seven-gear planet automatic gearbox is compact in structure, and the size and the weight of the seven-gear planet automatic gearbox are reduced.

Description

technical field [0001] The invention belongs to the technical field of vehicle transmission, and in particular relates to a seven-speed planetary automatic transmission for road vehicles. Background technique [0002] As an automatic transmission for road vehicles, the internal combustion engine and other power are transmitted to the input shaft of the planetary automatic transmission through the hydraulic torque converter. After shifting according to the current gear, the power is output from the output shaft and transmitted to the left and right drives through the differential. Wheels, and most transmissions are composed of multiple planetary rows, brakes and clutches. At present, the seven-speed planetary automatic transmission for mainstream road vehicles has a large transmission ratio range, and has four planetary rows, and has a large volume and weight. Therefore, it is necessary to find a seven-speed planetary automatic transmission suitable for road vehicles with a ...

Claims

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Application Information

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IPC IPC(8): F16H3/62
CPCF16H3/66F16H2003/445F16H2200/0056F16H2200/201F16H2200/2046F16H3/62F16H2200/2064
Inventor 王明成冯光军石彦辉姜宏暄李慎龙贾爽李吉元王景霞徐飞望运虎王颖楠李翠芬韩宇石李志伟衣超于定跃潜波刘越
Owner 北方汤臣传动科技有限公司
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