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A multi-speed planetary gear transmission device

A technology of speed change device and planetary gear, applied in the direction of gear transmission device, multi-transmission ratio transmission device, transmission device, etc., can solve the problems of increasing processing and manufacturing costs, difficulty in supplying oil to the clutch, and complicated oil supply passages, etc. The effect of driving operation, compact structure and convenient fuel supply

Active Publication Date: 2020-10-16
BEIHANG UNIV
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AI Technical Summary

Problems solved by technology

An 8-speed planetary gear automatic transmission is mentioned in the prior art, which includes 4 planetary rows, 5 shift elements (3 clutches and 2 brakes), and 3 shift elements for each gear closed to achieve 8 Forward gear and 1 reverse gear, only 8 forward gears can be realized, and 3 clutches are arranged in the middle of the transmission among the 5 shifting elements, it is difficult to supply oil to the clutch, and the oil supply oil passage is complicated, which increases the processing and manufacturing cost
Another technology mentions a 9-speed planetary gear automatic transmission, which includes 4 planetary rows, 6 shift elements (3 clutches and 3 brakes), and each gear is closed with 3 shift elements to achieve 9 forward speeds. There are only 9 forward gears, 3 clutches and 3 brakes among the 6 shifting elements, and 1 of the 3 clutches is arranged in the middle of the transmission, so it is difficult to supply oil

Method used

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  • A multi-speed planetary gear transmission device

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Embodiment Construction

[0037] In order to understand the above-mentioned purpose, features and advantages of the present invention more clearly, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0038] In the following description, many specific details are set forth in order to fully understand the present invention. However, the present invention can also be implemented in other ways different from those described here. Therefore, the protection scope of the present invention is not limited by the specific details disclosed below. EXAMPLE LIMITATIONS.

[0039] Such as figure 1 As shown, a multi-speed planetary gear transmission device includes:

[0040] box (not shown);

[0041] Eight rotating shafts, namely the first rotating shaft 1, the second r...

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Abstract

The invention discloses a multi-gear planetary gear transmission device, which includes 8 rotating shafts, 5 brakes, 2 clutches, and 5 planetary rows. The invention uses 5 simple negative planetary rows and 7 shifting elements (including 5 brakes and 2 clutches), 2 clutches are arranged at the front end of the transmission instead of the middle of the transmission, so the oil supply is very convenient; 5 brakes are included, the number of brakes is large, and the planetary row arrangement can be embedded, and the pressure oil can be directly from the box The brake is supplied, and the structural layout is more compact; each gear position closes 2 shift elements, which can realize 12 forward gears and 1 reverse gear, with more gear numbers and a wider range of transmission ratios.

Description

technical field [0001] The invention belongs to the technical field of automobile transmissions, in particular to a multi-speed planetary gear transmission device. Background technique [0002] Fuel economy and power requirements of automobiles have led to more and more gears and larger transmission ratio ranges of automobile AT automatic transmissions. An 8-speed planetary gear automatic transmission is mentioned in the prior art, which includes 4 planetary rows, 5 shift elements (3 clutches and 2 brakes), and 3 shift elements for each gear closed to achieve 8 Forward gear and 1 reverse gear, only 8 forward gears can be realized, and 3 clutches are arranged in the middle of the transmission among the 5 shifting elements, so it is difficult to supply oil to the clutch, and the oil supply oil passage is complicated, which increases the processing and manufacturing cost. Another technology mentions a 9-speed planetary gear automatic transmission, which includes 4 planetary ro...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16H3/66
CPCF16H3/66F16H2200/0078F16H2200/2015F16H2200/2048
Inventor 董鹏徐向阳刘艳芳王书翰郭伟
Owner BEIHANG UNIV
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