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Planetary gear train for an automatic transmission of a vehicle

A technology of automatic transmission and planetary gear system, which is applied in vehicle gearboxes, vehicle parts, gear transmissions, etc., can solve the problems of being unable to be widely used and deteriorating shifting experience, and achieve improved power transmission performance and fuel consumption. The effect of driving performance

Active Publication Date: 2021-04-16
HYUNDAI MOTOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this arrangement cannot be widely used, and the use of dog clutches will degrade the shift feel

Method used

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

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Embodiment Construction

[0024] It will be appreciated that the term "vehicle" or "vehicular" or other similar terms as used herein includes motor vehicles in general, such as including sport utility vehicles (SUVs), buses, vans, various Passenger cars of commercial vehicles, ships including various ships and ships, aircraft, etc., and includes hybrid vehicles, electric vehicles, hybrid electric vehicles, hydrogen vehicles and other alternative fuel vehicles (e.g., from sources other than petroleum fuel obtained from ). As referred to herein, a hybrid vehicle is a vehicle that has two or more sources of power, such as both a gasoline-powered vehicle and an electric-powered vehicle.

[0025] Although the exemplary embodiment is described as using a plurality of units to perform the exemplary process, it is understood that the exemplary process may also be performed by one or more modules. In addition, it can be understood that the term controller / control unit refers to a hardware device including a me...

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Abstract

The present invention provides a planetary gear train of an automatic transmission for a vehicle, including: an input shaft configured to receive engine torque; an output shaft configured to output shifted torque; a first planetary gear set having a second 1. Second and third rotation elements; second planetary gear set with fourth, fifth and sixth rotation elements; third planetary gear set with seventh, eighth and ninth rotation elements; fourth planetary gear group, with the tenth, eleventh and twelfth rotation elements; the first shaft, connected with the first rotation element, and directly connected with the transmission case; the second shaft, which makes the second rotation element, the sixth rotation element and The seventh rotating element is interconnected and selectively connected to the transmission housing; the third shaft is connected to the third rotating element; the fourth shaft is connected to the fourth rotating element and is directly connected to the input shaft and selectively connected to the third shaft sexual connection; the fifth axis; the sixth axis; the seventh axis; and the eighth axis.

Description

technical field [0001] The present invention relates to an automatic transmission for a vehicle, and more particularly to an automatic transmission for realizing at least nine forward speeds and at least one reverse speed shifting gears with a minimum of components. Background technique [0002] In the field of automatic transmission, more gears are used to improve the fuel consumption and driving performance of the vehicle. In recent years, high oil prices have caused competition to increase the fuel consumption of vehicles. Therefore, research has been started on engines to achieve weight reduction and improve fuel consumption through downsizing, and automatic transmissions to provide both better driving performance and fuel consumption by realizing more gears. In order to obtain an automatic transmission with more shift speeds, the number of components is generally increased, and this causes problems such as deterioration of mountability, increase in production cost, inc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16H3/66
CPCF16H3/66F16H2200/0065F16H2200/2012F16H2200/2046
Inventor 鞠再昌权贤植赵源珉黄圣旭池晟旭
Owner HYUNDAI MOTOR CO LTD
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