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Nine-speed automatic transmission of automobiles

An automatic transmission, automobile technology, applied in the direction of vehicle gearboxes, transmission components, transmission devices, etc., can solve the problems of large transmission ratio range, complex structure, difficult to provide, etc.

Active Publication Date: 2019-04-16
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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  • Nine-speed automatic transmission of automobiles
  • Nine-speed automatic transmission of automobiles
  • Nine-speed automatic transmission of automobiles

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Embodiment Construction

[0099] The present invention is described in detail below in conjunction with accompanying drawing:

[0100] 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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Abstract

The invention discloses a nine-speed automatic transmission of automobiles, and belongs to the technical field of automatic transmissions. The problems that the complicated structure in the existing automatic transmission technology is difficult to provide slightly gradual, well-graded transmission ratio series and a large transmission ratio range particularly are overcome. The nine-speed automatic transmission of the automobiles includes four planet gear sets arranged front and back along a main rotating shaft in sequence, nine rotatable shafts, two brakes and four clutches; the six shiftingswitching elements allow selectively to be manipulated, so that nine forward gears and one reverse gear are formed between an input shaft and an output shaft the transmission; the input shaft is connected with a seventh shaft in a loosened mode through a first clutch, and the seventh shaft is connected with a first planet carrier and a fourth planet carrier; the input shaft is connected with an eighth shaft in a loosened mode through a second clutch, and the eighth shaft is connected with a first gear ring; and a third shaft is connected with a third gear ring and connected with a shell through a first brake, and a fourth shaft is connected with a second gear ring and connected with the shell through a second brake; and the output shaft is connected with a third planet carrier and a fourthgear 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, 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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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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