A nine-speed automatic transmission for automobiles

An automatic transmission, automobile technology, applied in the direction of vehicle gearbox, transmission device, transmission element, etc., can solve the problems of large transmission ratio range, difficult to provide, complex structure, etc., to achieve large transmission ratio range, good classification, high transmission efficiency Effect

Active Publication Date: 2022-01-18
彭建新
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  • Summary
  • Abstract
  • Description
  • 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 complex structure in the existing automatic transmission technology, especially the difficulty in providing slightly progressive, well-graded transmission ratio series and large transmission ratio range, and to provide a nine-speed automobile Automatic Transmission

Method used

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  • A nine-speed automatic transmission for automobiles
  • A nine-speed automatic transmission for automobiles
  • A nine-speed automatic transmission for automobiles

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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. These shifting elements are provided for switching 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...

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PUM

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Abstract

The invention discloses a nine-speed automatic transmission for automobiles, which belongs to the technical field of automatic transmissions; it overcomes the complex structure in the existing automatic transmission technology, especially it is difficult to provide a slightly progressive and well-graded transmission ratio series and a large transmission ratio range Problem; consists of four planetary gear sets arranged in succession along the main axis of rotation; nine rotatable shafts; two brakes and four clutches, a total of six shifting elements that allow selective Manipulated so that nine forward gears and one reverse gear are formed between the transmission input shaft and output shaft; the input shaft is releasably connected to the seventh shaft connected to the first planet carrier, the fourth planet carrier via the first clutch and The eighth shaft is releasably connected to the first gear ring via the second clutch, the third shaft is connected to the third ring gear and connected to the housing via the first brake, and the fourth shaft is connected to the second ring gear And it is connected to the casing via the second brake; the output shaft is connected to the third planet carrier and the fourth ring gear.

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, in particular to a nine-speed automatic transmission for automobiles. Background technique [0002] The powertrain of a motor vehicle consists of an engine, a nine-speed automatic transmission and a differential or final drive. The nine-speed automotive automatic transmission enhances the vehicle's overall operating range by allowing the engine to be operated multiple times through 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 torque range. [0003] At present, the four-speed automatic transmission, espec...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16H3/66F16H57/08
CPCF16H3/666F16H57/082F16H2200/2012F16H2200/0082F16H2200/0065F16H2200/2046
Inventor 彭建新薛焕樟
Owner 彭建新
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