multi-speed automatic transmission

An automatic transmission and gear technology, which is applied in the field of automobile transmission system, can solve the problems of large overall transmission range, idling loss, increase the difficulty of oil circuit design and manufacturing cost, etc., and achieve the effect of excellent gear ratio sequence

Active Publication Date: 2018-01-09
钦州绿传科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of this multi-speed transmission is that only two shifting elements are closed for each gear, the other four shifting elements are open causing idling losses
In addition, it has a disadvantage: According to the description in the patent, the oil filling for a shift element must pass through two relatively rotating shafts, which will increase the difficulty of oil circuit design and manufacturing costs
[0005] The disadvantage of the coaxial arrangement of multiple planetary rows and shifting elements is that in some parts of the transmission, multiple rotating shafts are nested and rotated together, which makes the bearing arrangement very complicated
[0007] However, this structure uses five shift elements, which can only achieve eight forward gears at most, and its overall transmission range can only reach 9 at most.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0057] Such as figure 1 As shown, a multi-speed automatic transmission can realize nine forward gears and one reverse gear. It includes two shaft systems WS1 and WS2 arranged in parallel. The input shaft input is connected to the first shaft of the first shaft system WS1 through the torque converter TC with torsional shock absorber TD and lock-up clutch LC, and the second shaft of the second shaft system WS2 is through the final reduction gear set TG211 Drive the differential gear Diff., and then transmit it to the wheels on both sides through the output terminals on both sides of the differential gear.

[0058] The first axis system is located on the active side, including the first axis 1, the third axis 3, the fourth axis 4, the fifth axis 5, and the ninth axis 9. The second shaft system is located on the driven side and includes a second shaft 2 , a sixth shaft 6 , a seventh shaft 7 , an eighth shaft 8 , and a tenth shaft 10 .

[0059] The ninth shaft 9 and the sixth sh...

no. 2 example

[0090] The second example is figure 2 Shown is another application of the multi-speed automatic transmission of 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 an electric motor E-motor. The motor is directly connected to the first shaft of the multi-speed automatic transmission, and an additional clutch C0 is integrated and arranged inside the motor. The clutch C0 is used to cut off and connect the engine, and its two sides are the input shaft input and the first shaft respectively. When the vehicle starts or runs at a low speed, the clutch C0 is opened, and only the motor drives the transmission system. When the power demand of the vehicle is high, such as high-speed driving conditions, the clutch C0 is closed and connected to the engine, so that the power output by the engine can drive the vehicle trans...

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Abstract

A multi-speed automatic transmission, comprising a first shaft system WS1, a second shaft system WS2, a first fixed shaft gear set TG69, a second fixed shaft gear group TG56, a third fixed shaft gear set TG17, a first planetary gear set PG1, the second planetary gear set PG2, the third planetary gear set PG3 and 6 shift elements, namely the first brake B1, the second brake B2, the first clutch C1, the second clutch C2, the third clutch C3, and the fourth clutch C4: Power is input from the first shaft system WS1, output to the differential Diff. through the second shaft system WS2, and then transmitted to the wheels on both sides through the output terminals on both sides of the differential. The first shaft system and the second shaft system are arranged in parallel, which is especially suitable for front-drive vehicles; the compact structure makes the vehicle shift response faster, and the stronger power can make the vehicle have better driving performance and better fuel consumption economy.

Description

technical field [0001] The invention provides a multi-gear automatic transmission, which relates to a multi-gear automatic transmission capable of power shifting. As a power transmission device, it is especially suitable for front-drive type passenger vehicles. The invention belongs to the technical field of automobile transmission system. Background technique [0002] In order to reduce the fuel consumption of vehicles and improve their drivability, the number of gears in automatic transmissions of passenger cars is increasing. In the field of passenger vehicles, automatic transmission (AT) arrangements are mainly divided into two types: longitudinal arrangement (applied to front-rear drive vehicles) and transverse arrangement (applied to front-front drive vehicles). The mechanical components of the longitudinal automatic transmission are arranged coaxially. The mechanical parts of the transverse automatic transmission are arranged in parallel shafts, and are connected wi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16H3/66F16H59/02
CPCF16H3/66F16H2200/0065F16H2200/201F16H2200/2046
Inventor 董鹏孙汉乔徐向阳
Owner 钦州绿传科技有限公司
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