Double-clutch automatic gearbox transmission device

Abstract

The invention relates to a double-clutch automatic gearbox transmission device for vehicles. The double-clutch automatic gearbox transmission device structurally comprises an inner input shaft, an outer input shaft, two auxiliary shafts, two clutches, a differential assembly, a plurality sets of normally engaged gears and a synchronizer, wherein the inner input shaft is coaxial with the outer input shaft, and the two auxiliary shafts are parallel with the two input shafts. A first-gear driven gear and a reverse-gear driven gear are disposed on the same auxiliary shaft, the main reducing drive gear on the auxiliary shaft is the one, with low tooth number, of the two main reducing drive gears, and accordingly a double-clutch automatic gearbox is allowed to have large reverse gear transmission ratio, and high reverse gear safety is achieved. The fourth gear and the sixth gear share a drive gear. The second-gear driven gear directly drives the reverse-gear driven gear. The first-gear gear set and the second-gear gear set which serve as low-speed gears are disposed at the position, away from the shaft end, of the shafting of the gearbox. The pinion process size is used to the maximum extent, the double-clutch automatic gearbox is allowed to be small in axial size. The transmission device is simple and compact in structure, small in axial size, large in gear transmission ration freedom degree, and the like.

Description

technical field [0001] The invention belongs to the technical field of vehicle (automotive) transmissions, and in particular relates to a double-clutch automatic transmission transmission device. Background technique [0002] Comfort, handling and high efficiency and economy are all very important performance indicators of vehicles and transmissions. In the application of traditional manual transmissions and automatic transmissions, the above performance aspects are all at the expense of the other. Choosing high handling and high efficiency and economy means low comfort; choosing high comfort means making compromises in handling and economy. [0003] However, the adoption of the new dual clutch transmission (Dual Clutch Transmission) can satisfy people's comprehensive demands on the above performance to the greatest extent. Dual-clutch transmissions can provide high efficiency and higher controllability comparable to manual transmissions, and can meet people's needs for veh...

AI Technical Summary

Problems solved by technology

[0004] Existing dual-clutch transmissions tend to be more and more compact in structure, resulting in fewer gears in the transmission, which affects the smoothness of the transmission's shifting, which means affecting the driving comfort of the vehicle; or leads to more gears, but There are too many gear sets in shared gears, which affects the degree of freedom of the transmission ratio of each gear of the transmission, and it is difficult to match with different vehicles; some dual-clutch transmissions are equipped with a reverse shaft, which makes the number of transmission parts more and the cost of the transmission is higher.

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