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Seven-gear planetary automatic transmission

A technology of automatic transmission and planetary gear, which is applied in the field of vehicle transmission, can solve the problems of large volume and weight, and insufficient compact structure, and achieve the effect of reducing volume and weight

Active Publication Date: 2019-11-12
CHINA NORTH VEHICLE RES INST
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Problems solved by technology

At present, the seven-speed planetary automatic transmission for mainstream road vehicles is basically obtained by adding a planetary row on the basis of the original six-speed planetary automatic transmission. The structure is not compact enough, and the volume and weight are large; Seven-speed planetary automatic transmission with more compact structure

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Embodiment Construction

[0026] In order to make the object, content and advantages of the present invention clearer, the specific implementation manners of the present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0027] The seven-speed planetary automatic transmission provided by the invention is suitable for a vehicle transmission system. Among them, each planetary row is arranged in order, and each planetary row is connected by a connecting member. 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 transfer the power of the engine through the hydraulic torque converter. to the planetary automatic 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 ...

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Abstract

The invention provides a seven-gear planetary automatic transmission of a vehicle driving system. The transmission comprises four planetary gear sets, an input member, an output member, five connecting members, four brakes and two clutches, wherein the input member and the output member are arranged at the two ends of the transmission. Compared with the prior art, the automatic transmission adoptsa scheme of four planetary gear sets, four brakes and two clutches, seven forward gears and two reverse gears are realized, and the transmission ratio range is wide. According to the seven-gear planetary automatic transmission, a simple gear shifting control and compact structure is conveniently realized, and the control difficulty and the size and the weight of an automatic transmission 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 a planetary 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 through the differential. drive wheels, while the transmission mostly consists of multiple planetary rows, brakes and clutches. At present, the seven-speed planetary automatic transmission for mainstream road vehicles is basically obtained by adding a planetary row on the basis of the original six-speed planetary automatic transmission. The automatic transmission is a more compact seven-speed planetary automatic transmiss...

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Application Information

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IPC IPC(8): F16H3/66F16H47/08
CPCF16H3/66F16H47/08F16H2200/0056F16H2200/0086F16H2200/2012F16H2200/2046F16H2057/02086F16H2057/02091F16H2057/02043
Inventor 王明成易光明王杨雪梅徐鸣王景霞于艳秋韩宇石冯光军石彦辉姜宏暄李吉元贾爽
Owner CHINA NORTH VEHICLE RES INST
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