Automatic Transmission for Vehicles

An automatic transmission and vehicle technology, applied in the direction of vehicle gearbox, vehicle parts, transmission elements, etc., can solve the problems of unable to expand the speed change range, unable to ensure the inter-stage ratio, etc., to improve vehicle mountability, achieve engine noise, and fuel consumption. The effect of improved performance
CN105190098BActive Publication Date: 2018-01-05JATCO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
JATCO LTD
Publication Date
2018-01-05

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Abstract

An automatic transmission for a vehicle, comprising: a first planetary gear set (1) having a first element (11), a second element (14), and a third element in an arrangement order corresponding to a gear ratio on a common speed diagram Element (12); Ravenau type second planetary gear set (2). The input shaft (I) is always connected to the second element (14), and is connectable to the second sun gear (21) by the connection of the first clutch (4), and can be connected to the second sun gear (21) by the connection of the second clutch (5). Coupled with the third sun gear (26). The output member is always connected with the second ring gear (22). The first element (11) is fixable to the stationary part (8) by the coupling of the first brake (3). The third element (12) is always connected to the second planet carrier (25) and is fixable to the stationary part (8) by the coupling of the second brake (6). The third sun gear (26) can be fixed to the stationary part (8) by the coupling of the third brake (7).
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Description

technical field

[0001] The present invention relates to automatic transmissions for vehicles. Background technique

[0002] An automatic transmission described in Patent Document 1 is known as a conventional automatic transmission for vehicles. This conventional automatic transmission for vehicles has a planetary gear set composed of a so-called Ravigneau type planetary gear set and a single pinion type planetary gear set, and hydraulically operated by two clutches and three brakes. The friction coupling element, thus obtaining 6 forward speeds and 1 reverse speed.

[0003] prior art literature

[0004] patent documents

[0005] Patent Document 1: (Japanese) Unexamined Patent Publication No. 2003-240068

[0006] The problem to be solved by the invention

[0007] However, the above-mentioned conventional automatic transmission for vehicles has the problems described below.

[0008] That is, in the above-mentioned conventional automatic transmission for vehicles, there i...

Claims

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