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Planetary gear train of automatic transmission for vehicles

A planetary gear train, automatic transmission technology, applied in the direction of vehicle transmission, vehicle components, gear transmission, etc., can solve the problem of the linearity of the gear ratio of the eight-speed automatic transmission, and reduce the resistance loss and increase the torque. Effects of transmission efficiency and durability, improved power delivery efficiency and fuel consumption

Active Publication Date: 2022-06-03
HYUNDAI MOTOR CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In addition, the eight-speed automatic transmission may deteriorate in the step ratio linearity of the shift gear even if the gear ratio span becomes a level above 9.0

Method used

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  • Planetary gear train of automatic transmission for vehicles
  • Planetary gear train of automatic transmission for vehicles

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Embodiment Construction

[0040] The following description is merely exemplary in nature and is not intended to limit the invention, application, or uses. It should be understood that

[0041] In the following description, the names of the components are divided into first, second, etc. in order to divide the names, because the names of the components

[0042] Furthermore, as used herein, a description of "directly" connected or interconnected elements includes fixedly connected elements, i.e.

[0044] Referring to FIG. 1, the planetary gear train includes: first, second, third, fourth and fifth rows arranged on the same axis

[0046] According to an exemplary embodiment of the present invention, the first, second and third, fourth and fifth rows from the engine side

[0055] The nine axes TM1 to TM9 are arranged as follows:

[0056] Each of the nine shafts TM1 to TM9 may be a link between the input and output shafts and the planetary gear sets PG1, PG2,

[0061] The fifth shaft TM5 is connected to the fif...

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Abstract

The present invention relates to a planetary gear train of an automatic transmission for vehicles, the planetary gear train including: an input shaft configured to receive external torque; an output shaft configured to output shifted torque; a first planetary gear set, It has a first rotation element, a second rotation element and a third rotation element; a second planetary gear set having a fourth rotation element, a fifth rotation element and a sixth rotation element; a third planetary gear set having a seventh rotation elements, an eighth rotation element, and a ninth rotation element; a fourth planetary gear set having a tenth rotation element, an eleventh rotation element, and a twelfth rotation element; a fifth planetary gear set having a thirteenth rotation elements, a fourteenth rotating element and a fifteenth rotating element; a first shaft fixedly connected with the first rotating element and the input shaft; a second shaft; a third shaft; a fourth shaft; a fifth shaft; a sixth shaft; seventh axis; eighth axis; and ninth axis.

Description

Planetary gear train of automatic transmission for vehicle technical field [0001] The present invention relates to an automatic transmission for a vehicle. Background technique [0002] The statements in this section merely provide background information related to the present disclosure and may not constitute prior art. In the field of automatic transmissions, more gear shifts are a useful technique for improving the fuel consumption and drivability of a vehicle. technique. In the so-called trend of engine downsizing, the availability of more gears helps to improve the performance and efficiency of the vehicle [0004] speed, and better gear linearity can improve the driving of the vehicle by improving the uniformity of acceleration before and after shifting, etc. sex. [0005] In order to obtain more gears of an automatic transmission, the number of parts is usually increased, which increases the Production cost, weight and / or power flow efficiency degradation. I...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16H3/66F16H57/023
CPCF16H3/66F16H57/023F16H2200/0069F16H2200/2046F16H2200/0082F16H2200/2015
Inventor 金珍镐黄铜焕朴钟述金钟洙李炅勋
Owner HYUNDAI MOTOR CO LTD
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