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Automatic Transmission
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A technology of automatic transmission and transmission, applied in the direction of vehicle gearbox, transmission element, transmission device, etc., can solve the problems of complex structure, and achieve the effect of compact overall structure, smooth power switching and economical use.
Active Publication Date: 2015-09-09
SHENGRUI TRANSMISSION
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Abstract
Description
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Problems solved by technology
Most of the early automatic transmissions (AT) used a multi-stage planetary gear set structure, either with fewer gears or with an overly complex structure.
Method used
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no. 1 example
[0039] like figure 1 As shown, an automatic transmission can realize at least thirteen forward gears and at least one reverse gear. The input shaft in of the transmission is connected to the first shaft 1 through the starting unit for power input, and the output shaft out of the transmission is connected to the second shaft 2 through the differential FD to output power. The starting unit may be a starting clutch or a hydraulic torque converter or the like.
[0040] The transmission includes two shaft systems, three spur gear sets, three planetary gear sets and six shift units arranged side by side in a common transmission case O. In this technical field, shafts having the same axis and components arranged on these shafts form a shaft system.
[0041] The first shaft system is located on the transmission side, including the first shaft 1, the third shaft 3, the fourth shaft 4, the fifth shaft 5 and the sixth shaft 6, and the second shaft system is located on the driven side, ...
no. 2 example
[0068] like figure 2 As shown, its structure is basically the same as that of the first embodiment, except that the fifth clutch C5 is connected between the seventh shaft 7 and the second ring gear Ho2.
no. 3 example
[0070] image 3 Shown is another form of application of the invention, referred to as a hybrid power transmission solution. The electric motor EM is connected to the fifth shaft 5 through an additional spur gear set, in this case the electric motor EM is arranged parallel to both shaft systems.
[0071] The first shaft 1 extends along the axis of the entire first shaft system, and its two ends are supported on the transmission case 0 . In this case, both ends of the first shaft 1 can be connected to an engine or an electric machine EM. This technical solution enables the transmission of the present invention to have a large number of different application designs. Such a structure is also applicable to the first embodiment and the second embodiment.
[0072] The second shaft 2 extends along the axis of the entire second shaft system, and its two ends are supported on the transmission case 0 . In this case, the flanges at both ends of the second shaft 2 can be connected to ...
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Abstract
The invention discloses an automatic transmission. The automatic transmission comprises a first shaft system located on a driving side, a second shaft system located on a driven side, three spur gear sets, three planetary gear sets, five clutches and a brake, wherein the first shaft system and the second shaft system are arranged in the same transmission box body abreast and are connected by multiple power paths to which the three spur gear sets belong. At least thirteen forward gears and one backward gear are realized by only six gear shifting units, i.e., the five clutches and the brake, and the gear step of commonly used gears is between 1.042 and 1.214, the total drive ratio range reaches 9.528, the gear shifting is smooth, the structure is kept compact, the driving dynamic property of a car is improved, oil consumption is further reduced, the use is economical, and the environment protection is benefited; the automatic transmission is suitable for hybrid power drive and has a function of being suitable for automatic starting and stopping of an engine.
Description
technical field [0001] The invention relates to an automatic transmission, in particular to an automatic transmission suitable for use as a main transmission device in a power transmission system of a passenger car. Background technique [0002] In the field of passenger vehicles, automatic transmission (AT) is still the mainstream transmission structure. Most of the early automatic transmissions (AT) used a multi-stage planetary gear set structure, either with few gears or an overly complex structure. Later, the structure of the automatic transmission in which the combination of two shaft systems, spur gear sets and planetary gear sets began to appear. Chinese invention patent CN101275630B has just described such a multi-stage transmission with power shifting. [0003] According to the patent, the transmission includes two shaft systems, three spur gear sets, three planetary gear sets and multiple shift units arranged side by side in a common transmission case, wherein th...
Claims
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Application Information
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