Optimizing and designing system for dynamic property of fluidic-resistance suspension of automobile powertrain

Abstract

The invention provides an optimizing and designing system for dynamic property of a fluidic-resistance suspension of an automobile powertrain. The optimizing and designing system is characterized in that firstly, the mechanical principle is utilized to determine relative structural parameters of the fluidic-resistance suspension, and the relative structure parameters include relative parameters of a rubber main spring, relative parameters of an upper liquid chamber and a lower liquid chamber, relative parameters of a runner and relative parameters of hydraulic oil; then, the actual working principle of the fluidic-resistance suspension is deep understood to construct a mechanical model of the fluidic-resistance suspension, and a functional structure can be abstracted into that the lower liquid chamber, a liquid chamber separating layer and the upper liquid chamber are sequentially arranged in a cavity from bottom to top; a runner liquid column is further arranged in the middle of the liquid chamber separating layer, and the runner liquid column can move along with harmonic excitation exerted at the top of the suspension; due to the fact of the changeable characteristic of the rubber liquid chamber, the upper liquid chamber above the runner liquid column can be simplified into an equivalent piston; and an elastic body of the upper liquid chamber can be simplified into the changeable volume with the rigidity to be shown through a left spring and a right spring. A correlation formula of representation property of the fluidic-resistance suspension is induced; the dynamic property, with the parameters optimized, of the fluidic-resistance suspension is achieved; and an optimized sample is obtained based on the dynamic property with the parameters optimized to obtain the optimal dynamic property.

Description

technical field [0001] The invention relates to the technical field of automobile mount systems, in particular to an optimal design system for dynamic characteristics of automobile powertrain fluid resistance mounts. Background technique [0002] With the continuous development of the automobile industry, people's requirements for driving comfort are also increasing, and the powertrain is the most important source of excitation for automobiles, and the quality of its vibration isolation is crucial to the vibration comfort of the vehicle. The core component of the modern automotive powertrain mount system, the dynamic performance of the fluid resistance mount directly determines the vibration attenuation of the mount system in the entire frequency range, especially at low frequencies. [0003] For a long time, for the structural design of liquid resistance mounts, all parties have tended to continue to use the mature structures of previous models, especially the key structure...

AI Technical Summary

Problems solved by technology

In order to solve the above unsatisfactory problems such as the lack of theoretical basis in the design and analysis of the liquid resistance mount, the design system can be used for the preliminary design and structural analysis of the liquid resistance mount. According to the liquid resistance mount system and the vehicle Based on the level matching principle, the key structural parameters of the liquid resistance mount are provided to optimize the matching of the liquid resistance mount

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