Automatic transmission

A technology of automatic transmission and transmission, which is applied in the direction of vehicle gearboxes, transmission components, transmission devices, etc., can solve the problems of increasing the difficulty of box processing and manufacturing, complex transmission structure, and difficulty in lightweight design, so as to reduce the oil loss of belt discharge , reduced drag torque, and compact structure

Pending Publication Date: 2017-10-20
GUANGZHOU AUTOMOBILE GROUP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, since the brake is finally connected to the case by friction steel teeth, the existence of the brake increases the difficulty of processing and manufacturing the case, and results in a more complicated transmission structure; and because the case material is generally aluminum alloy, more brakes Undoubtedly, it will cause difficulties in lightweight design while maintaining strength
However, the structure of the Lavina structure is very complicated, which is not conducive to lightweight

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0034] Such as figure 1 As shown, the automatic transmission of the preferred embodiment of the present invention includes a power input member 12, a power output member 13, four planetary rows, five clutches and a brake 10, and each planetary row includes a sun gear, a planetary gear, and a planet carrier and the ring gear, the four planetary rows are the first planetary row 1, the second planetary row 2, the third planetary row 3 and the fourth planetary row 4, and the five clutches are the first clutch 5, the second clutch 6, the Three clutches 7, the fourth clutch 8 and the fifth clutch 9;

[0035] The first clutch 5 can be connected between any two parts in the sun gear 1-1 of the first planetary row, the planet carrier 1-3 and the ring gear 1-4; in this embodiment, the first clutch 5 Connected between the planetary carrier 1-3 of the first planetary row 1 and the ring gear 1-4;

[0036] The planetary carrier 1-3 of the first planetary row is connected with the brake 10...

Embodiment 2

[0068] Such as figure 2 As shown, the automatic transmission of another preferred embodiment of the present invention includes a power input member 12, a power output member 13, four planetary rows, five clutches and a brake 10, and each planetary row includes a sun gear, a planetary gear, The planet carrier and the ring gear, the four planetary rows are the first planetary row 1, the second planetary row 2, the third planetary row 3 and the fourth planetary row 4, and the five clutches are the first clutch 5 and the second clutch 6 , the third clutch 7, the fourth clutch 8 and the fifth clutch 9;

[0069] The first clutch 5 is connected between the planetary carrier 1-3 of the first planetary row 1 and the sun gear 1-1;

[0070] The planetary carrier 1-3 of the first planetary row is connected with the brake 10, and the planetary carrier 1-3 of the first planetary row is connected with the ring gear 2-4 of the second planetary row through the second clutch 6, and the teeth ...

Embodiment 3

[0079] Such as image 3 As shown, the automatic transmission of the third preferred embodiment of the present invention includes a power input member 12, a power output member 13, four planetary rows, five clutches and a brake 10, and each planetary row includes a sun gear, a planetary gear, The planet carrier and the ring gear, the four planetary rows are the first planetary row 1, the second planetary row 2, the third planetary row 3 and the fourth planetary row 4, and the five clutches are the first clutch 5 and the second clutch 6 , the third clutch 7, the fourth clutch 8 and the fifth clutch 9;

[0080] The first clutch 5 is connected between the planetary carrier 1-3 of the first planetary row 1 and the ring gear 1-4;

[0081] The planetary carrier 1-3 of the first planetary row is connected with the brake 10, and the planetary carrier 1-3 of the first planetary row is connected with the ring gear 2-4 of the second planetary row through the second clutch 6, and the teet...

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Abstract

The invention relates to the field of transmissions and discloses a nine-speed automatic transmission. The transmission is combined by four planet rows and six gear shift operating elements (comprising five clutches and one brake) so as to realize nine forward gears and one reverse gear; compared with a transmission with gear shift operating elements (six) of the same amount, the automatic transmission has the advantages that due to the reduction of the amount of the brake, the production difficulty of a box body is lowered, and the light weight of the whole transmission is favorably realized; due to the adoption of a relatively large number of clutches (five), the nested design of the clutches is favorably realized, so that the whole mechanism is more compact; the larger clutch number (five) is beneficial to the cutting-off of a connecting relationship among the planet rows under a specific gear, and the redundant planet rows are made not to take part in rotation, so that the drag torque and the drag churning loss are reduced, and the efficiency is increased; in addition, due to the adoption of the more clutches, the expansion of more speed gears by increment of the planet rows or more operating elements in future is favorably realized.

Description

technical field [0001] The invention relates to the field of transmissions, in particular to an automatic transmission. Background technique [0002] The transmission mechanism of the multi-stage automatic transmission generally includes a plurality of planetary rows, and the power of the engine is transmitted to the planetary row transmission mechanism through the hydraulic torque converter to be output after being shifted. The volume, weight, efficiency and carrying capacity of the automatic transmission are directly related to the planetary mechanism. [0003] The more transmission gears of the automatic transmission, the lower the fuel consumption of the car and the better the economy, but as the number of gears increases, the number of planetary rows and the number of operating clutches and brakes also increase, satisfying the theoretical level ratio The design is even more difficult to realize. People have been seeking to form a planetary gear transmission mechanism ...

Claims

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Application Information

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IPC IPC(8): F16H3/66F16H57/023F16H57/08
CPCF16H3/66F16H57/023F16H57/082F16H2200/2012F16H2200/0065F16H2200/2046F16H2200/2097
Inventor 邰昌宁谢天礼凌晓明周友刘学武张安伟关佳景
Owner GUANGZHOU AUTOMOBILE GROUP CO LTD
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