An eleven-speed transmission based on a planetary gear train

A planetary gear train and transmission technology, which is applied in vehicle gearboxes, geared components, gear transmissions, etc., can solve problems such as fuel economy, responsiveness, and stability limitations, and improve power transmission performance and fuel economy, high reliability, and low cost effects
CN112081884BActive Publication Date: 2021-07-27SHAANXI FAST GEAR CO
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SHAANXI FAST GEAR CO
Publication Date
2021-07-27

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Abstract

The present invention relates to a transmission, in particular to an eleven-speed transmission based on a planetary gear train, which solves the limitations of existing four-speed and six-speed transmissions in terms of fuel economy, responsiveness, and stability. question. The eleven-speed transmission based on the planetary gear system of the present invention includes a transmission housing and a planetary gear system. The planetary gear system includes four planetary rows and seven shifting assemblies arranged on the same shaft system. The four planetary row assemblies pass through The rotating shaft and other connecting components form eight rotating bodies. The shifting component uses clutches and brakes to change the degree of freedom of the planetary gear train. The shifting speed of at least eleven forward gears and at least two reverse gears is obtained, with a more optimized speed ratio, which significantly improves the power transmission performance and fuel economy of the vehicle.
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Description

technical field

[0001] The invention relates to a transmission, in particular to an eleven-speed transmission based on a planetary gear train. 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] At present, four-speed and six-speed transmissions are the most common on the ...

Claims

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