Six-gear automatic transmission

An automatic transmission, six-speed technology, applied in the field of automobile transmission system, can solve the problems affecting the stability and service life of the transmission, complicated control oil circuit, and many layout spaces, etc., and achieves shortened axial length, simple connection, and reduced The effect of idling losses

Active Publication Date: 2017-09-29
BEIHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the increase in the number of gears for passenger car automatic transmissions also has some disadvantages
For example, the more the number of gears, the larger the volume of the transmission, and the more layout space it occupies, which is not conducive to the layout of other structures in the car.
In addition, the increase in the number of gears also brings about new design problems in the operation of the transmission. The multi-degree-of-freedom planetary transmission requires the use of multiple operating parts in conjunction with each gear. It is necessary to change multiple operating parts, which will complicate the corresponding operating oil circuit, thus affecting the stability and service life of the transmission

Method used

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Examples

Experimental program
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Effect test

no. 1 example

[0030] Such as figure 1 Shown: the present invention provides a six-speed automatic transmission, which consists of 3 planetary gear sets (the first planetary gear set PG1, the second planetary gear set PG2, the third planetary gear set PG3) and 5 shift elements (the first Brake B1, second brake B1, first clutch C1, second clutch C2, third clutch C3), six-speed automatic transmission case 0, first shaft 1 of six-speed automatic transmission, second shaft of six-speed automatic transmission 2 components, and in order to illustrate the route of power transmission through the six-speed automatic transmission, figure 1 The components shown include the input shaft Input, the torque converter TC, and the output terminals on both sides of the differential; the relationship between them is: 3 planetary gear sets, 5 shifting elements, and a six-speed automatic transmission The first shaft 1 of the six-speed automatic transmission and the second shaft 2 of the six-speed automatic trans...

no. 2 example

[0036] Such as figure 2 Shown: the second embodiment is another application of the six-speed automatic transmission described in the first embodiment, which is called a hybrid power transmission scheme. The structure of the second embodiment is basically the same as that of the first embodiment, except that the torque converter TC is replaced by the electric motor TM, and the zeroth clutch C0 is added. The zeroth clutch C0 is arranged between the input shaft Input and the first shaft 1 of the six-speed automatic transmission and is connected with them, and the motor TM is connected with the first shaft 1 of the six-speed automatic transmission;

[0037] The zeroth clutch C0 is used to cut off and connect the power provided by the engine of the vehicle. When the vehicle starts or runs at low speed, the clutch C0 is opened, and only the motor TM drives the transmission system; when the vehicle requires high power, such as high-speed driving conditions, the clutch C0 is closed ...

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Abstract

The invention discloses a six-gear automatic transmission. The six-gear automatic transmission is composed of three planetary gear sets, namely, a first planetary gear set (PG1), a second planetary gear set (PG2) and a third planetary gear set (PG3), five gear shift elements, namely, a first brake (B1), a second brake (B2), a first clutch (C1), a second clutch (C2) and a third clutch (C3), a six-gear automatic transmission box body (0), a first shaft (1) of the six-gear automatic transmission and a second shaft (2) of the six-gear automatic transmission. According to the effects formed by the three planetary gear sets, the overall axial length of the transmission is reduced, the overall structure is compact, the connecting manner of the three planetary gear sets is simple, and manufacturing and assembling are easy. Six forward gears and one reverse gear can be achieved through the five gear shift elements, gear shift between the gears is simple gear shift, that is, gear shift of the adjacent gears can be achieved simply by controlling engagement of one gear shift element and disengagement of one gear shift element, and the gear shift process is smoother.

Description

technical field [0001] The invention provides a six-speed automatic transmission, which relates to a power-shiftable automatic transmission suitable for passenger cars, and as a power transmission device, it is especially suitable for front-drive passenger vehicles. The invention belongs to the technical field of automobile transmission system. Background technique [0002] In the field of passenger cars, automatic transmissions (AT) are arranged longitudinally (applied to front-rear-drive vehicles), or horizontally (applied to front-front-drive vehicles), and some adopt In-line arrangement (applied to rear rear drive). [0003] The speed change mechanism of the passenger car automatic transmission is composed of multiple planetary gear sets, friction elements that transmit and convert speed and torque, such as clutches, brakes and their servo systems, which transform the speed and torque from the hydraulic torque converter Then it is sent to the output shaft to drive the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H3/66
CPCF16H3/66F16H2200/0008F16H2200/0052F16H2200/201F16H2200/2043
Inventor 王书翰刘艳静姜嘉楠李宗君孙汉乔
Owner BEIHANG UNIV
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