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Dry friction external control four-gear transmission

A dry friction, transmission technology, applied in the direction of vehicle gearbox, gear transmission, transmission components, etc., can solve the problems of low shift success rate, large shift impact, and high failure probability, achieve high mechanical efficiency, reduce friction and heat generation , the effect of reducing energy consumption

Active Publication Date: 2017-07-25
FUJIAN WANRUN NEW ENERGY TECH
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  • Description
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AI Technical Summary

Problems solved by technology

[0007] For the AMT transmission similar to the patent CN201620174565, the speed ratio change is achieved by changing the meshing state of the transmission gear. The shifting impact is large, the response time is long, the success rate of shifting is low, and the failure rate is relatively high.

Method used

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  • Dry friction external control four-gear transmission

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Embodiment Construction

[0048] In order to describe the technical content, structural features, achieved goals and effects of the present invention in detail, the following will be described in detail in conjunction with the embodiments and accompanying drawings.

[0049] Its design concept is to divide the transmission into a clutch part and a gearbox part. The clutch part is the dry part, which is characterized by no lubricating oil; the gearbox part is the wet part, which is characterized by lubricating oil; Department, and shift actuators and brake components are arranged in the stem.

[0050] Please also refer to figure 1 ,Such as figure 1 It can be seen that a preferred embodiment of the present invention is a dry friction externally controlled four-speed transmission, including a shift control element outside the box and a planetary gear transmission, and the planetary gear transmission includes a first gear group, second gear set, third gear set, first planet carrier, second planet carrier,...

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Abstract

The invention discloses a dry friction external control four-gear transmission. The dry friction external control four-gear transmission comprises a gear-shifting control element and a planetary gear train gearbox which are arranged outside a box. The planetary gear train gearbox comprises a first gear set, a second gear set, a third gear set, a first planet carrier, a second planet carrier, a gear ring and a box body. The gear-shifting control element comprises a first dry friction clutch, a second dry friction clutch, a first brake and a second brake. By means of the dry friction external control four-gear transmission, by controlling the clutches, the first brake and the second brake, gear-shifting stability within the small-gear and large-adjustable-speed range is achieved, the radial and axial dimensions of the transmission are decreased, and the dry friction external control four-gear transmission can be widely applied to hybrid electric vehicles.

Description

technical field [0001] The invention relates to the field of new energy vehicles, in particular to a dry friction externally controlled four-speed transmission. Background technique [0002] In a hybrid vehicle, a pure electric motor is usually used to start the vehicle to avoid the inefficient work of the vehicle engine at low speed. For this reason, the transmission that matches on the car usually only has 2 to 3 gears. This kind of working mode that cannot realize the direct start of the engine, when the vehicle feeds or the electric drive system fails, the vehicle cannot start. [0003] In the design of the traditional four-speed automatic transmission, the planetary transmission mechanism mainly has the structure of Simpson type and Lavina type, and uses the wet multi-disc clutch and brake in the box as the shift control element. This type of transmission belongs to the AT (hydraulic Automatic Transmission). In addition, the patent CN201620174565 discloses a fixed-sh...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H3/66
CPCF16H3/66F16H2200/2041F16H2200/201F16H2200/0043
Inventor 黄键李芳慧林立徐世跃
Owner FUJIAN WANRUN NEW ENERGY TECH
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