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Multi-gear speed changer adopting planetary gear structure mode

A multi-speed transmission and planetary gear technology, which is applied in the direction of vehicle gearboxes, gear transmissions, and components with teeth, etc., can solve the problems of automatic transmissions such as complex structure, high production cost, and difficulty in providing, so as to improve driving comfort , improve service life and reduce fuel consumption

Inactive Publication Date: 2017-06-13
彭建新
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  • 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, heavy mass and high production cost of the existing automatic transmission, especially it is difficult to provide a slightly progressive and well-graded transmission ratio series, the minimum load of each component of the automatic transmission and good The problem of meshing efficiency

Method used

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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. The first, second, third and fourth planetary gear sets P1, P2, P3, P4 of the automatic transmission unit are single-stage planetary gear sets. The transmission unit has six shift shift elements C1, C2, C3, B1, B2, B3. These shifting elements are provided for shifting exactly nine forward automatic transmission gears G1, G2, G3, G4, G5, G6, G7, G8, G9 and one reverse gear GR. However, the automatic transmission unit can also be operated with only eight forward ...

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Abstract

The invention discloses a multi-gear speed changer adopting a planetary gear structure mode, and belongs to the technical field of an automatic speed changer. The problems that the conventional automatic speed changer is complex in structure, heavy and high in production cost, particularly slightly progressive and well graded transmission ratio series and high engagement efficiency are difficult to provide are solved. The multi-gear speed changer comprises four planet wheel groups which are arranged along a main rotating shaft sequentially; six gear-shifting switching components are allowed to be selectively controlled, so that nine forward gears and one reverse gear are formed between an input shaft and an output shaft of the speed changer; the input shaft is in loose connection with a fifth shaft, which is connected with a third planet carrier and a fourth planet carrier, through a third clutch; a six shaft which is connected with a first sun wheel and a second sun wheel is in loose connection with a shell through a second brake; an eighth shaft connected with a third sun wheel is in loose connection with the shell through a third brake; 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 a multi-speed transmission with a planetary gear structure. Background technique [0002] The powertrain of a motor vehicle consists of an engine, a multi-speed transmission, and a differential or final drive. A multi-speed transmission increases the overall operating range of the vehicle 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 will limit the overall speed range of the vehicle and thus require a relatively large engine to produce a wide speed and torque range. [0003] At present, the four-speed automatic transmission, especially the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H3/62
CPCF16H3/62F16H2200/0065F16H2200/0082F16H2200/2012
Inventor 彭建新薛焕樟
Owner 彭建新
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