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Planetary gear train of automatic transmission for vehicle

A planetary gear train, automatic transmission technology, applied in the direction of vehicle gearbox, vehicle components, gear transmission, etc., can solve the problem of easy to become very long, and achieve the effect of ensuring linearity, improving driving efficiency, and reducing length

Active Publication Date: 2018-06-29
HYUNDAI MOTOR CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] However, we have found that the disclosed automatic transmissions of eight or more speeds typically include many components and thus can easily become very long

Method used

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

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Embodiment Construction

[0046] Hereinafter, the present disclosure will be described more fully with reference to the accompanying drawings that illustrate exemplary forms of the disclosure. As those skilled in the art would realize, the forms described may be modified in various different ways, all without departing from the spirit or scope of the present disclosure.

[0047] The drawings and description are to be regarded as illustrative in nature rather than restrictive, and like reference numerals refer to like elements throughout this disclosure.

[0048] In the following description, since the names of the components are the same as each other, dividing the names of the components as first, second, etc. is for dividing the names, and the order thereof is not particularly limited.

[0049] In the following description, various components are described as being connected, which may include components being directly connected, fixedly connected, selectively connected, or operably connected. In the ...

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Abstract

A planetary gear train of an automatic transmission includes a main shifting portion having three planetary gear sets arranged on an input shaft, an auxiliary shifting portion having one planetary gear set arranged on an output shaft, eleven shafts respectively connected with corresponding rotational elements of the four planetary gear sets, and two transfer gears respectively forming external gear-engagement between the main and auxiliary shifting portions.

Description

[0001] Cross References to Related Applications [0002] This application claims priority and benefit from Korean Patent Application No. 10-2016-0170771 filed on December 14, 2016, which is hereby incorporated by reference in its entirety. technical field [0003] The present disclosure relates to an automatic transmission for a vehicle. Background technique [0004] The statements in this section merely provide background information related to the present disclosure and may not constitute prior art. [0005] Recently, rising oil prices have led to increased competition to improve vehicle fuel efficiency. [0006] In this sense, research has been conducted on automatic transmissions to simultaneously provide better drivability and fuel consumption by realizing more shift stages. [0007] In order to realize more gear stages of an automatic transmission, the number of parts is usually increased. This has a negative impact on ease of installation, production costs, weight ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H3/66F16H57/023
CPCF16H3/66F16H57/023F16H2200/0065F16H2200/2012F16H2200/2046F16H3/666F16H2200/2097F16H37/04F16H2037/048
Inventor 金钟洙黄铜焕朴钟述李炅勋金珍镐
Owner HYUNDAI MOTOR CO LTD
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