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Four-planetary-gear-set automatic transmission and vehicle

A technology of automatic transmission and planetary row, which is applied to vehicle components, vehicle gearboxes, transmission components, etc., can solve problems such as the difficulty in lightweight design of the box, and achieve the effects of reducing manufacturing difficulty, reducing drag torque, and compact structure

Active Publication Date: 2018-06-29
GUANGZHOU AUTOMOBILE GROUP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the production process of the transmission, the friction steel teeth of the brake are finally connected to the case of the transmission. The existence of the brake undoubtedly increases the difficulty of processing and manufacturing the case; Undoubtedly, it will make it difficult to make the lightweight design of the box while ensuring the strength

Method used

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  • Four-planetary-gear-set automatic transmission and vehicle
  • Four-planetary-gear-set automatic transmission and vehicle
  • Four-planetary-gear-set automatic transmission and vehicle

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Such as figure 1 As shown, a four-planetary automatic transmission according to an embodiment of the present invention is schematically shown, which includes an input member 6 and an output member 7, and the first planetary row 1, the second planetary row 2, the The third planetary row 3 and the fourth planetary row 4, the first clutch C1, the second clutch C2, the third clutch C3, the fourth clutch C4, the fifth clutch C5 and the brake B;

[0040] Among them, the first planetary row 1, the third planetary row 3 and the fourth planetary row 4 are all single-planetary planetary rows, while the second planetary row 2 is a double-planetary planetary row;

[0041] The first planetary row 1 includes a first sun gear 11, a first ring gear 12, a first planet carrier 13 and a first planetary gear 14, wherein the first sun gear 11 and the first planetary gear 14 are externally meshed, and the first planetary gear 14 is internally meshed with the first ring gear 12, and the firs...

Embodiment 2

[0061] Such as figure 2 As shown, the structural layout of the four-planetary automatic transmission in this embodiment is substantially the same as that in Embodiment 1, the difference lies in that the third clutch C3 is set in a different position, and the third clutch C3 in this embodiment is connected to the third sun Between the wheel 31 and the fourth sun gear 41, that is, the third sun gear 31 is connected to the fourth sun gear 41 through the third clutch C3, while the fourth ring gear 42 is fixedly connected to the third planet carrier 33; although in this embodiment In this example, the setting position of the third clutch C3 is different from that of the third clutch in Embodiment 1. However, in these two embodiments, the third clutch C3 is set on the third planetary row 3 and the fourth Between the planetary rows 4, and the four-planetary automatic transmission of this embodiment shares a speed ratio conversion logic table with Embodiment 1, and the power transmis...

Embodiment 3

[0063] Such as image 3 As shown, the structural layout of the four-planetary automatic transmission in this embodiment is generally the same as that in Embodiment 1, the difference is that the fourth clutch C4 is located in a different position, and the fourth clutch C4 in this embodiment is connected to the first ring gear 12 and the second ring gear 22, that is, the first ring gear 12 is connected to the second ring gear 22 through the fourth clutch C4, and the first planet carrier 13 is fixedly connected to the second planet carrier 23; although in this embodiment , the position of the fourth clutch C4 is different from the position of the fourth clutch C4 in Embodiment 1, but in these two embodiments, the fourth clutch C4 is set on the first planetary row 1 and the second Between the planetary rows 2, and the four-planetary automatic transmission of this embodiment shares a speed ratio conversion logic table with Embodiment 1, and the power transmission route map under ea...

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Abstract

The invention relates to the field of automobiles, and discloses a four-planetary-gear-set automatic transmission and a vehicle. The four-planetary-gear-set automatic transmission comprises an input component, an output component, 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, a fifth clutch and a brake, wherein the first planetary gear set, the second planetary gear set, the third planetary gear set and the fourth planetary gear set are sequentially arranged along the same rotating shaft; the input component is fixedly connected to a second planetary frame and a fourth planetary frame at the same time, and the output component is fixedly connected to a thirdplanetary frame; a first sun gear is fixed, a second sun gear is connected to a fourth sun gear through the first clutch, and a second gear ring is connected to a third gear ring through the second clutch, and the second gear ring is connected to the fourth sun gear through the fifth clutch; and the third clutch is arranged between the third planetary gear set and the fourth planetary gear set, the fourth clutch is arranged between the first planetary gear set and the second planetary gear set, and the fourth clutch is selectively closed so as to transmit power input from the input componentto the first planetary gear set and the second planetary gear set; and the brake is selectively closed so as to brake the third gear ring.

Description

technical field [0001] The invention relates to the field of automobile transmissions, in particular to a four-planetary automatic transmission and a vehicle. Background technique [0002] The gear train mechanism of the electronically controlled hydraulic transmission generally includes multiple planetary arrays, and the engine power is transmitted to the planetary gear transmission mechanism through the hydraulic torque converter for gear shifting and then output. The volume, weight, efficiency and carrying capacity of the automatic transmission are directly related to the layout of the planetary row structure. The more gears of the automatic transmission drive train, the lower the fuel consumption of the car and the better the economy. However, as the number of gears increases, the number of planetary rows and the number of operating clutches and brakes also increase, and it is even more difficult to achieve a design that satisfies the theoretical step ratio. [0003] A...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H3/62F16H3/66F16H57/023
CPCF16H3/62F16H3/66F16H57/023F16H2200/0069F16H2200/2012F16H2200/2046
Inventor 周友邰昌宁谢天礼雷格凌晓明刘学武张安伟
Owner GUANGZHOU AUTOMOBILE GROUP CO LTD
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