A vehicle automatic transmission
An automatic transmission and vehicle technology, which is applied to vehicle gearboxes, vehicle components, transmission devices, etc., can solve the problems of excessive clutch or brake impact, large speed difference, and low reliability, and achieve simplified structure, reduced cost, and improved performance. reliability effect
Active Publication Date: 2020-03-06
杨燕
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Problems solved by technology
The AT automatic transmission in the prior art often has the problems of complex structure and low reliability, and the shifting speed is not as fast as that of a DCT transmission (dual clutch transmission)
In the structure of the automatic transmission announced by Chinese Patent Publication No. CN1502022A, various hydraulic oil lines for controlling clutches and brakes are arranged inside the main input drive shaft and inside the gearbox. High cost, not suitable for large-scale popularization of automatic transmission vehicles
Moreover, during the shifting process of this type of automatic transmission, some rotating parts need to change suddenly from forward to reverse, from reverse to forward, from rotating to stationary, and from stationary to rotating. The rotational speed difference is too large, resulting in heavy clutch or brake impact, unable to complete shifting in a very short time, which also causes the shifting speed of AT transmissions is often not as good as that of DCT transmissions
Method used
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[0038] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0039] A kind of optimized embodiment of the present invention (see attached image 3 ), the following only introduces the more critical parts, and other parts of the information please refer to the content of the invention. This embodiment has eight forward speed change units altogether, and eight forward brakes; Altogether seven forward connecting parts 50 have connected the planet carrier 33 of these eight forward speed change units, and they rotate integra...
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An automatic transmission of a vehicle comprises a shell, a main shaft, at least three advancing planet speed change units and at least three advancing brakes. Each advancing planet speed change unitcomprises a sun wheel, a planet wheel, a planet carrier and a gear ring. The automatic transmission is characterized in that the sun wheels are arranged on the main shaft; an advancing connecting component is further arranged between the planet carriers of every two adjacent advancing planet speed change units, and the adjacent planet carriers are connected together through the advancing connecting components to do overall rotation. The advancing brakes are arranged between the gear rings of the advancing planet speed change units and the shell, and control signals for operating the brakes aretransmitted to the advancing brakes through the shell. The structure of the automatic transmission of the vehicle is simplified, the parts are convenient to manufacture and produce, and the gear shifting speed is high.
Description
technical field [0001] The invention relates to a transmission mounted on a vehicle between a power device and a driving wheel, in particular to a fast-shifting automatic transmission for motor vehicles. Background technique [0002] Generally speaking, an AT automatic transmission (hydraulic planetary gear transmission) mounted on a motor vehicle (such as an automobile) uses multiple sets of planetary gears for combined speed change. The AT automatic transmission in the prior art often has the problems of complex structure and low reliability, and the shifting speed is not as fast as that of a DCT transmission (dual clutch transmission). In the structure of the automatic transmission announced by Chinese Patent Publication No. CN1502022A, various hydraulic oil lines for controlling clutches and brakes are arranged inside the main input drive shaft and inside the gearbox. The cost remains high, and it is not suitable for the large-scale popularization of automatic transmiss...
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IPC IPC(8): F16H3/62
CPCF16H3/62F16H2200/201F16H2200/2038
Inventor 杨燕
Owner 杨燕