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Automatic transmission

A technology of automatic transmission and gearbox, applied in the direction of vehicle gearbox, transmission element, transmission device, etc., can solve the problems of increased gear noise or vibration, easy to tilt, longer planetary gear, etc., and achieve the effect of suppressing the increase

Inactive Publication Date: 2010-04-21
MAZDA MOTOR CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, the planetary gears meshing across the divided gears become longer and tend to incline, thereby tending to increase gear noise and vibration.

Method used

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  • Automatic transmission
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Embodiment Construction

[0056] Hereinafter, the best embodiment of the present invention will be described in detail based on the drawings. However, the following description of the best embodiment is merely an example in nature, and the present invention is not intended to limit its applicability or its scope of application.

[0057] figure 1 , shows the overall configuration of the automatic transmission AT according to this embodiment. This configuration shows the application of the transmission sequence for a front-engine front-wheel drive vehicle (FF vehicle) in which the automatic transmission AT is mounted horizontally on the vehicle.

[0058] The automatic transmission AT includes, as its main constituent elements, a hydraulic torque converter 3 , a transmission gear mechanism 2 , and a differential gear mechanism 4 . The hydraulic torque converter 3 transmits the rotational driving force transmitted from the output shaft of the engine outside the figure to the input shaft Input of the trans...

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Abstract

The automatic transmission AT comprises: a first and second always decelerating planetary gear sets GS1, GS2; first to fourth four rotation elements connected to each other provided with two pairs ofplanetary gear sets GS3, GS4 connected the first rotation element PC4 to an output gear (Output); first to third clutches C1-C3; and first and second brakes B1, B2. In the planetary gear sets GS1-GS4,the first always decelerating planetary gear set GS1, two pairs of planetary gear sets GS3, GS4 and the second always decelerating planetary gear set GS2 are arranged from a power input side to an input shaft (Input) toward its opposite side in this order. The output gear (Output) is arranged at an intermediate position of the first always decelerating planetary gear set GS1 and the planetary gear set GS4.

Description

technical field [0001] The present invention relates to an automatic transmission that can obtain at least six forward gears, comprising four sets of simple planetary gear sets, composed of three clutches and two brakes. Background technique [0002] This type of automatic transmission has conventionally consisted of an input shaft, a reduction gear shaft set to reduce it, a Simpson-type planetary gear train combining two simple planetary gear sets, three clutches, two brakes, and an output shaft. It is well known that three clutches and two brakes of frictional elements are appropriately engaged and released (for example, refer to Japanese Patent Publication No. Hei 4-219553 figure 1 ). [0003] In the above-mentioned automatic transmission, in order to obtain the shift speed of the automatic accelerator, the input to the planetary gear carrier and the ring gear of the planetary gear train is necessary, but if the input shaft and the output shaft are arranged on the same a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16H3/62
CPCF16H37/04F16H3/66F16H2200/2097F16H2200/0052F16H2200/2012
Inventor 镰田真也寺冈隆道土井淳一坂时存岩崎龙彦坂上直博沟部龙利藤田芳彦岩下典生小森贤上田和彦江崎诚司
Owner MAZDA MOTOR CORP