Optimal design method for parameter of controllable cylinder type hydraulic buffer of semi-active suspension

Abstract

The invention relates to an optimal design method for a parameter of a controllable cylinder type hydraulic buffer of a semi-active suspension. The optimal design method is characterized by adopting the following steps: 1), determining the damping ratio of a vehicular suspension system; 2), designing an open valve damping coefficient of a buffer speed property recover route; 3), determining the damping force of the reducer at a golden cutting speed point; 4), determining the design area of an adjustable damping hole of the reducer; 5), repeating the steps 2) to 4), calculating the adjustable damping hole area required by the thickness of the design valve block is calculated; repeating the steps 2) to 4) again, and calculating the minimum area of the adjustable damping hole; 6), determining the throttle seam pressure when a controllable valve of the buffer is opened at the first time; 7), determining the throttle seam pressure and the piston hole flow rate at the thickness designed speed point of the controllable valve throttle valve block; 8), determining the design thickness of the controllable valve throttle valve block. By adopting the design method, the design value of the valve parameter is exact and reliable; the repeatedly test and modification are avoided; the design cost of the controllable buffer is reduced; and the development cycle of the buffer is shortened.

Description

technical field [0001] The invention relates to a semi-active suspension of an automobile, in particular to a design method for a controllable valve parameter of a controllable cylinder hydraulic shock absorber of the semi-active suspension. Background technique [0002] The controllable shock absorber of automobile semi-active suspension is the most widely used controllable cylinder hydraulic shock absorber, and its damping characteristics are mainly determined by the parameters of the shock absorber valve. At present, there is no accurate and reliable design method for the valve parameter design of the controllable cylinder hydraulic shock absorber at home and abroad. Reliable shock absorber design technology. Although scholars in our country have done a lot of research on this, there is still no accurate calculation and analysis formula for valve plate design for controllable cylinder hydraulic shock absorber valve parameters, lack of accurate and reliable design methods...

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Problems solved by technology

Although scholars in our country have done a lot of research on this, there is still no accurate calculation and analysis formula for valve plate design for controllable cylinder hydraulic shock absorber valve parameters, lack of accurate and reliable design methods, and lack of vibration reduction methods. The mathematical model for precise design of damper valve parameters seriously restricts the optimal design of controllable cylinder hydraulic shock absorber valve parameters, which is inconsistent with the current development trend of automobiles

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