Vehicle automatic transmission of planet gear structural mode

A technology for automatic transmissions and planetary gears, applied in vehicle gearboxes, gear transmissions, components with teeth, etc., can solve the problems that it is difficult to provide a slightly gradual and well-graded transmission ratio series and a large transmission ratio range, to achieve The effect of sufficient transmission range, compact structure and small load

Active Publication Date: 2019-02-15
ZHAOQING UNIV
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to overcome the large number of components and complex structure in the existing automatic transmission technology, especially the difficulty in providing a slightly progressive, well-graded transmission ratio series and large transmission ratio range, and provide An automotive automatic transmission with a planetary gear structure

Method used

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  • Vehicle automatic transmission of planet gear structural mode
  • Vehicle automatic transmission of planet gear structural mode

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Embodiment Construction

[0098] The present invention is described in detail below in conjunction with accompanying drawing:

[0099] figure 1 An exemplary embodiment of an automatic transmission unit, which is designed as a motor vehicle automatic transmission unit, is shown. The automatic transmission unit has four planetary gear sets P1, P2, P3, P4. The first planetary gear set P1, the second planetary gear set P2, the third planetary gear set P3 and the fourth planetary gear set P4 are successively arranged along the main rotation axis. All planetary gear sets P1, P2, P3, P4 of the automatic transmission unit have negative gear ratio planetary gear sets. The transmission unit has six shifting elements B1, B2, C1, C2, C3, C4. The shifting elements are provided for shifting exactly nine forward automatic transmission gears V1, V2, V3, V4, V5, V6, V7, V8, V9 and one reverse gear VR. However, the automatic transmission unit can also be operated with only eight forward transmission gears, for examp...

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Abstract

The invention discloses a vehicle automatic transmission of a planet gear structural mode, and belongs to the technical field of automatic transmissions. The problems that existing automatic transmission technologies have a large number of components and a complex structure, especially, a slightly gradual and well-graded transmission ratio series is difficult to provide, and the transmission ratiorange is large are solved. The vehicle automatic transmission comprises four planet gear sets which are successively arranged front and back along a main rotary shaft, nine rotating shafts, two brakes and four clutches; the total six gear shifting switch components are included and are allowed to be selectively operated so that nine forward gears and one reverse gear can be formed between an input shaft and an output shaft of the transmission; an input shaft is connected with a sixth shaft connected with a fourth planet carrier through the first clutch in a releasable mode and is connected with a ninth shaft connected with a fist sun wheel through the second clutch in a releasable mode; a seventh shaft is connected with a second sun wheel and a third sun wheel and is connected to a shellthrough the second brake; and the output shaft is connected with a fourth gear ring.

Description

technical field [0001] The invention belongs to the technical field of automatic transmissions, and relates to an automatic transmission unit, in particular to a power transmission system for motor vehicles, and in particular to an automobile automatic transmission with a planetary gear structure. Background technique [0002] The powertrain of a motor vehicle consists of an engine, an automotive automatic transmission with a planetary gear structure, and a differential or final reducer. Automotive automatic transmissions in the form of planetary gears enhance the overall operating range of the vehicle by allowing the engine to be operated multiple times within its torque range. The number of forward speed ratios (forward gears) available in the transmission determines the number of times the engine torque range is repeated. A low number of forward gears limits the overall speed range of the vehicle and thus requires a relatively large engine to produce a wide speed and tor...

Claims

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Application Information

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IPC IPC(8): F16H3/66
CPCF16H3/66F16H2200/0065F16H2200/2012F16H2200/2046F16C32/0633
Inventor 薛焕樟张建林景杨邱永钦黄廉胜赵飞颖
Owner ZHAOQING UNIV
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