Multi-clutch type variable transmission device

Abstract

The invention relates to a multi-clutch type variable transmission device and relates to a double-clutch variator. The multi-clutch type variable transmission device comprises an input shaft, a first auxiliary shaft, a second auxiliary shaft, an output shaft, double clutches, a synchronizer and gears. According to the multi-clutch type variable transmission device provided by the invention, by virtue of the combination of the two double clutches, the synchronizer and the gears, the gear is automatically and smoothly changed; by virtue of the structure of sharing the gears and adding one double clutch, the gear number is greatly increased, and the amount of gear shifting gear is reduced; and as each pair of gears adopt a small velocity ratio and a short transmission shaft structure, the rigidity of a variator is strengthened, the radial and axial sizes of the variator are reduced, and the structure of the variator is compact.

Description

technical field [0001] The invention relates to a double clutch speed change mechanism, in particular to a speed change mechanism with more than two double clutches. Background technique [0002] Currently, there are three main types of automatic transmissions used in automobiles: hydraulic automatic transmission (AT), electromechanical automatic transmission (AMT) and mechanical continuously variable automatic transmission (CVT). In the field of electronically controlled mechanical automatic transmission, there is also a variable speed transmission method, that is, dual-clutch automatic transmission (DSG). The automatic mechanical transmission (AMT) is based on the manual transmission, adding an automatic control device to control the clutch and select the gear pair on the fixed shaft system for automatic shifting. During the shifting process, there is power interruption phenomenon, and the shifting smoothness not good. The electro-hydraulic automatic transmission (AT) ha...

AI Technical Summary

Problems solved by technology

The automatic mechanical transmission (AMT) is based on the manual transmission, adding an automatic control device to control the clutch and select the gear pair on the fixed shaft system for automatic shifting. During the shifting process, there is power interruption phenomenon, and the shifting smoothness not good

The electro-hydraulic automatic transmission (AT) has a series of planetary gear trains and multiple clutches and brakes, which can automatically shift gears through electronically controlled hydraulic drive, but the structure and control system are complicated, the transmission efficiency is low, and the parts are difficult to process Large, high manufacturing and maintenance costs

The mechanical continuously variable transmission (CVT) can realize continuous stepless speed regulation, but the transmission torque is small, the processing and manufacturing precision of the parts is high, the manufacturing is difficult, the parts wear during use, and the service life is short. Because of its inherent friction transmission characteristics, low transmission efficiency

The dual-clutch transmission (DSG) has the advantages of simple structure, high transmission efficiency, rapid and smooth shifting of uninterrupted power, etc., but the coaxial dual clutch with single input and double output has complex structure, difficult control and high manufacturing precision due to its structural characteristics. , the axial length is too long, the speed ratio of each pair of gears is too large, resulting in large radial dimensions, the number of gears available is small, and the number of gears is too large when the number of gears is provided.

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