Dual-clutch automatic transmission of automobile

Abstract

The invention provides a dual-clutch automatic transmission of an automobile, belongs to the field of mechanical engineering, and solves the problems of a current transmission of complex structure and messy layout caused by the fact that the current transmission comprises a plurality of associated toothed wheels. The dual-clutch automatic transmission comprises seven forward gears and a reverse gear, as well as a clutch I, a clutch II, a solid input shaft, a hollow input shaft, a first forward shaft, a second forward shaft, a reverse shaft and a compensating gear with a main speed-down gear ring, wherein four forward gear toothed wheels are arranged on the second forward shaft in a positioning manner, and are meshed with four driving toothed wheels on the solid input shaft and the hollow input shaft in a one-to-one correspondence manner; and a reverse gear toothed wheel is arranged on the reverse gear in a positioning manner. The dual-clutch automatic transmission of the automobile only comprises five gear-driven assistant layers, and at least two gear-driven assistant layers are omitted, so that layout size in the axial direction of a gear-driven part is maximally shortened, and the loadable performance of the automatic transmission can be effectively ensured.

Description

technical field

[0001] The invention belongs to the technical field of mechanical engineering, and relates to an automatic transmission, in particular to an automatic double-clutch transmission for automobiles. Background technique

[0002] A transmission is a device that changes the speed or traction of a car. With the continuous reduction of non-renewable oil resources and the increasing pollution of the environment by vehicle exhaust, countries have become more and more strict on the fuel consumption and emission regulations of vehicles. The transmission efficiency of the transmission system has a greater impact on the fuel consumption of automobiles, and the development of efficient and energy-saving automatic transmissions has become the focus of research and development by domestic and foreign automobile companies. The traditional automatic transmission AT and continuously variable automatic transmission CVT adopt a hydraulic torque converter with low transmission eff...

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