A wet dual-clutch automatic transmission gear knocking simulation method and system

Abstract

The invention discloses a gear knock simulation method and system for an automatic gearbox of a wet dual clutch. The method comprises the following steps: pre-collecting a material, wherein the material comprises a structure principle chart of a power transmission system, a key parameter of a transmission part and a three-dimensional model of each gear shaft system; pre-utilizing the structure principle chart of the power transmission system and constructing a knock simulation model of the whole power transmission system according to a lump-mass method; then constructing mass equivalent models of all parts in the power transmission system according to the material; successively constructing sub models of all the parts according to the mass equivalent models of all the parts; inputting the sub models of all the parts and the key parameter of the transmission part into the knock simulation model; as the torsional vibration of the transmission system is an important factor generated by gear knock, the sub models of all the parts and the key parameter of the transmission part can briefly and accurately reflect the torsional vibration, so that the knock simulation method and system disclosed by the invention can perform gear knock simulation on power transmission systems under different working conditions.

Description

technical field [0001] The invention relates to the technical field of computer simulation, in particular to a method and system for gear knocking simulation of a wet double-clutch automatic transmission. Background technique [0002] The gearbox is one of the core components of the vehicle's power transmission system. Its task is to transform the power obtained from the engine and transmit it to the driving wheels, so as to meet the driving requirements of the vehicle. [0003] Since the gas explosion pressure of the engine changes periodically, coupled with the unbalanced inertial force generated by the reciprocating motion of the piston, the output torque of the engine is unstable, and the output speed fluctuates periodically. There is a meshing gap between the gears in the gearbox. The driving gear is affected by the fluctuation of the engine speed, and the light-loaded or no-load driven gear is under the action of inertial force. The tooth surface will have repeated imp...

AI Technical Summary

Problems solved by technology

[0007] The present invention provides a gear knocking simulation method and system of a wet double-clutch automatic transmission, which solves the problem that the prior art cannot fundamentally eliminate or reduce the knocking noise

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