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Double-clutch automatic transmission

A technology of automatic transmission and double clutch, applied in the direction of transmission, gear transmission, belt/chain/gear, etc., to achieve the effect of power shift performance

Inactive Publication Date: 2012-04-04
沈诗文
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In fact, although the DCT system realizes power shifting, like all existing mechanical automatic transmissions, the number of gears in the transmission is limited by the number of pairs of transmission gears in the transmission, that is, in general, There are several gears with several pairs of transmission gears; at the same time, when the DCT system is working, only one shaft transmits power, and the other shaft is in an idle state

Method used

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Embodiment Construction

[0019] The technical solutions of the present invention will be further explained below in conjunction with the drawings and embodiments, but the following content is not intended to limit the protection scope of the present invention.

[0020] This embodiment provides a dual-clutch automatic transmission. On the basis of the existing dual-clutch automatic transmission structure, a planetary mechanism is added between the engine and the dual-clutch to transmit power, and one of the elements of the planetary row is used as the input end and engine power. The output end is connected, and the other two components are used as the output end to connect with the driving ends of the two clutches respectively; at the same time, two brakes are fixed on the casing of the gearbox to control the movement of the output end of the planetary mechanism. This new type of transmission controls the coordinated action of clutches and brakes through the instructions of the control unit. Through the...

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Abstract

The invention discloses a double-clutch automatic transmission, which comprises a planet mechanism, two clutches, two brakes, a dead axle gear pair, a gear shifting drive mechanism, a control unit and a gear box body, wherein one end one clutch and one end of the other clutch are respectively connected with two parallel intermediate shafts of a gear box, the other ends of the two clutches are respectively connected with a gear ring and a sun gear of the planet mechanism, and a planet carrier of the planet mechanism is used as the input end of the gear box and connected with an output shaft of an engine; and one end, serving as a braking element, of each brake is fixedly connected to a gear box shell, and the other ends of the brakes are respectively connected with the gear ring and the sun gear of the planet mechanism so as to control motion of each element of the planet mechanism. Based on the conventional double-clutch automatic transmission, the planet mechanism and the two brakes are increased and used with the two clutches, so that the purpose of realizing more speed ratio gears by using few gear pairs can be fulfilled, and power gear shifting performance of the double-clutch automatic transmission can be realized.

Description

technical field [0001] The invention relates to a transmission in the technical field of vehicles, in particular to a dual-clutch automatic transmission. Background technique [0002] The current automatic transmissions of automobiles mainly include hydromechanical automatic transmission (AT), continuously variable transmission (CVT) and electromechanical automatic transmission (AMT). In particular, the development of electronically controlled mechanical automatic transmissions has attracted the attention of major automobile factories because of its advantages of high fuel economy, low emission and protection of existing manual transmission production investment required by the development of the current automobile industry. However, the working principle of AMT determines that it has the disadvantage of power interruption during the shifting process. The vehicle will inevitably decelerate, and the shifting time will be long, which will adversely affect the acceleration and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H3/44
CPCF16H37/042F16H37/046
Inventor 沈诗文
Owner 沈诗文
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