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Eight-speed automatic transmission

An automatic transmission, eight-speed technology, applied in the field of automobile transmission, can solve the problems of increasing the processing and manufacturing difficulty of the transmission case, and achieve the effects of improving the loading situation, avoiding direct impact, and reducing drag torque

Active Publication Date: 2018-12-14
GUANGZHOU AUTOMOBILE GROUP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The technical problem to be solved by the present invention is to provide an eight-speed automatic transmission for the existing eight-speed automatic transmission, which increases the processing and manufacturing difficulty of the transmission housing due to the existence of the brake.

Method used

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Embodiment Construction

[0046] In order to make the technical problems, technical solutions, and beneficial effects solved by the present invention clearer and clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention.

[0047] Such as figure 1 As shown, the eight-speed automatic transmission provided by the first embodiment of the present invention includes an input member 23, an output member 24, a transmission housing 22, a first planetary gear set, a second planetary gear set, a third planetary gear set, and a fourth planetary gear set. Planetary gear set, first clutch 17, second clutch 18, third clutch 19, fourth clutch 20, and fifth clutch 21.

[0048] In this embodiment, such as figure 1 As shown, each planetary gear set is a single star row with internal and external ...

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Abstract

The invention provides an eight-gear automatic speed changer. The eight-gear automatic speed changer comprises an input component, an output component, a speed changer shell, a first planetary gear set, a second planetary gear set, a third planetary gear set, a fourth planetary gear set, a first clutch, a second clutch, a third clutch, a fourth clutch and a fifth clutch. The eight-gear automatic speed changer comprises four planetary gear sets and five clutches, by selectively combining or separating the five clutches, eight forward-gear transmission ratios and a reverse transmission ratio are generated between the input component and the output component, so that eight forwarding gears and one reverse gear are realized. The eight-gear automatic speed changer does not use a brake, so that the machining and manufacturing of inner teeth on the speed changer shell are avoided, the machining and manufacturing difficulty of the speed changer shell is decreased, the light weight of the speed changer shell is facilitated, and the entire speed changer is more compact.

Description

Technical field [0001] The invention belongs to the technical field of automobile transmission, and particularly relates to an eight-speed automatic transmission. Background technique [0002] In the prior art, an automatic transmission (AT) for automobiles usually includes an input member, an output member, a planetary gear set, a clutch / brake, and a transmission member connecting the input member, output member, planetary gear set, and clutch / brake . The input member is usually connected with a starting element that integrates a lock-up clutch and a torsion damper, such as a hydraulic torque converter. According to the mechanical principle, the condition for a mechanism to have a definite movement is that the number of mechanism power sources is equal to the number of degrees of freedom of the mechanism's rotational speed. Since AT achieves different gears through the combined engagement of different clutches / brakes, that is, the degree of freedom of the components is restric...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16H3/66
CPCF16H3/66F16H2200/006F16H2200/2012F16H2200/2043F16H2200/2097
Inventor 张安伟邰昌宁谢天礼凌晓明周友刘学武关佳景
Owner GUANGZHOU AUTOMOBILE GROUP CO LTD
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