A twelve-speed automatic transmission
An automatic transmission and gear technology, applied in the field of transmission, can solve the problems of increasing the axial size of the automatic transmission, unfavorable automatic transmission installation, and limitation of the improvement of vehicle driving performance, so as to optimize the operating state and improve the fuel consumption. Economy, the effect of reducing the speed ratio span
Active Publication Date: 2022-07-05
SAIC MOTOR
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Problems solved by technology
However, if you want to continue to increase the number of gears to improve the driving comfort and fuel economy of the vehicle, you need to increase the planetary gear train, which will cause the axial size of the automatic transmission to increase, which is not conducive to the automatic transmission in the engine compartment. The installation in the interior restricts the improvement of the driving performance of the vehicle
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[0032] The invention provides a twelve-speed automatic transmission. By improving the existing structure, the number of gears can be increased without increasing the axial size of the automatic transmission, so that the driving performance of the vehicle can be significantly improved , improve the driving comfort of the vehicle, and also improve the fuel economy of the engine.
[0033] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.
[0034] In this embodiment, for the convenience of disti...
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The present application discloses a 12-speed automatic transmission, which adopts six planetary gear trains, every three planetary gear trains are integrated on one installation shaft, and there are two installation shafts in total, and the two installation shafts are connected with the power The input shafts are arranged in parallel and are located on both sides of the power input shaft, so that the length of the automatic transmission in the axial direction is not too large. The number of digits, so that the automatic transmission can provide more gears, can reasonably control the change of gears according to the actual operating road conditions of the whole vehicle, optimize the running state of the engine, make the engine work in a state of low fuel consumption as much as possible, and improve the vehicle. improved drivability and ride comfort, and improved engine fuel economy.
Description
technical field [0001] The invention relates to the technical field of gearboxes, in particular to a twelve-speed automatic gearbox. Background technique [0002] The gearbox is one of the key components in the transmission system of an automobile. The power output by the engine is decelerated and torque-increased or accelerated and de-torqued by the gearbox to realize the operation of the car under different road conditions. At present, with the continuous improvement of people's pursuit of driving comfort and fuel economy, the number of gears of the transmission is also increasing, so that the vehicle can further improve the driving performance in a variety of different road conditions. [0003] At present, the automatic transmission (AT) applied to the front-wheel drive vehicle is limited by the space limitation of the engine compartment, and there cannot be too many planetary gear trains arranged along the axial direction. However, if you want to continue to increase th...
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IPC IPC(8): F16H3/66
CPCF16H3/66F16H2200/0078F16H2200/2017F16H2200/2053
Inventor 方伟荣杨聪刘飞涛徐旭初李金明刘召磊
Owner SAIC MOTOR