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Seven-speed double-clutch type automatic transmission

A technology of automatic transmission and double clutch, which is applied to the transmission device, transmission device parts, gear transmission device, etc. It can solve the difficulty of increasing the arrangement of the gear shift actuator, the inability to pre-engage the first gear and the reverse gear at the same time, and the difficulty of assembling the transmission system, etc. problem, to achieve the effect of reasonable transmission ratio distribution, favorable weight reduction and reasonable layout of the whole vehicle

Active Publication Date: 2015-12-30
GUANGZHOU AUTOMOBILE GROUP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Chinese patent application No. 200910300847.0 promptly discloses a dual-clutch automatic transmission, wherein the first gear and the reverse gear share a driving gear, and the reverse gear carries out power transmission through the reverse gear shaft, which will cause the following problems: 1. The reverse gear shares the same driving gear, causing the first gear and the reverse gear to share the same clutch. When starting in neutral, the first gear and the reverse gear cannot be pre-engaged at the same time; 2. The power of the reverse gear needs to pass through the reverse gear shaft, which is not conducive to the transmission. Light weight also increases the difficulty of the arrangement of the shift actuator and the assembly of the entire transmission system

Method used

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  • Seven-speed double-clutch type automatic transmission
  • Seven-speed double-clutch type automatic transmission
  • Seven-speed double-clutch type automatic transmission

Examples

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no. 1 example

[0041] figure 1 It is a schematic structural diagram of the seven-speed dual-clutch automatic transmission according to the first embodiment of the present invention, please refer to figure 1 , the automatic transmission of this embodiment includes: a first input shaft 1, a second input shaft 2, a second output shaft 3, a second main reduction gear 4, a sixth-speed driven gear 5, a sixth-speed synchronizer 6, a reverse gear Component 7, third gear driven gear 8, third and seventh gear synchronizer 9, seventh gear driven gear 10, fifth and seventh gear driving gear 11, third gear driving gear 12, first gear driving gear 13, second reverse gear driving gear 14, Fifth-speed driven gear 15, first-fifth-speed synchronizer 16, first-speed driven gear 17, second-speed driven gear 18, second-fourth-speed synchronizer 19, fourth-speed driven gear 20, differential 21, parking gear 22. Parking shaft 23, third main reduction gear 24, differential ring gear 25, first main reduction gear 2...

no. 2 example

[0062] image 3 It is a schematic structural diagram of the seven-speed dual-clutch automatic transmission according to the second embodiment of the present invention, please refer to image 3 The difference between the automatic transmission of this embodiment and the automatic transmission of the first embodiment is that the third gear and the fifth gear are interchanged. Therefore, the first input shaft 1 is fixed on the first input shaft 1 from the end close to the engine. The driving gear 33 and the third and seventh gear driving gear 34, the second input shaft 2 is fixed with the fourth and sixth gear driving gear 28 and the second reverse driving gear 14 from the end close to the engine, and the first output shaft 27 is empty from the end close to the engine The fourth-speed driven gear 20, the second-speed driven gear 18, the first-speed driven gear 17 and the third-speed driven gear 8 are covered, and the second output shaft 3 is covered with a sixth-speed driven gear...

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Abstract

The invention provides a seven-speed double-clutch type automatic transmission which comprises two input shafts and two output shafts. The two input shafts are arranged in a nested mode. The automatic transmission is provided with seven forward gears and one reverse gear. Odd-gear driving gears are arranged on the first input shaft. Even-gear driving gears and reverse-gear driving gears are arranged on the second input shaft. Two reverse gears, the fourth gear, the sixth gear, the fifth gear and the seventh gear (or the third gear and the seventh gear) share the driving gears. A plurality of driven gears are arranged on the first output shaft. A reverse gear assembly and a plurality of driven gears are arranged on the second output shaft. The reserve gear assembly and the adjacent driven gear are designed into a dual-gear structure capable of being switched. As different clutches are used in the first gear and the reverse gear respectively, and in the neutral position starting process, the first gear and the reverse gear can be engaged in advance at the same time; as the reverse gear assembly and the adjacent driven gear are joined, reverse gear power transmission can be achieved, and a reverse gear shaft is omitted; by sharing the driving gears, the axial length of the automatic transmission is reduced.

Description

technical field [0001] The invention relates to the technical field of automobile transmissions, in particular to a seven-speed dual-clutch automatic transmission. Background technique [0002] Among the currently used automatic transmissions, AT (Automatic Transmission, hydraulic automatic transmission) is difficult to obtain more comprehensive application due to its complex structure, high manufacturing cost, difficult manufacturing, high fuel consumption and low efficiency; AMT (Automated Mechanical Transmission, electronically controlled mechanical transmission) Automatic transmission) has a low manufacturing cost, but it is difficult to popularize due to the interruption of shifting power that affects comfort, shifting noise and shifting impact; CVT (Continuously Variable Transmission) However, it is also difficult to be widely used due to low efficiency and high cost. [0003] The dual-clutch automatic transmission integrates two gearboxes and two clutches into one ge...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H3/085F16H3/12F16H57/023
Inventor 凌晓明刘学武张倍坚余子林吴坚邵发科王开国段燕军黄新志
Owner GUANGZHOU AUTOMOBILE GROUP CO LTD
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