Series single cylinder magneto-rheological oil-gas spring

Abstract

The invention discloses a series single-cylinder magnet-rheological hydro-pneumatic spring which comprises a cylinder body with a closed left end and an opened right end, the cylinder body is internally provided with a cylinder section piston and a damping piston in sequence from left to right, wherein a sealing element is fixedly sleeved outside the cylinder section piston, and the cylinder section piston is connected with the damping piston through a cylinder section piston rod, a left seal assembly is sleeved on the cylinder section piston rod; the exterior of the damping piston is with wound electromagnetic coils and the damping piston is connected with the left end part of a damping piston rod. The spring provided by the invention has nonlinear stiffness property and controllable damping characteristic which cannot affect each other, are fully decoupled, do not need volume compensation and can realize pure damping characteristic, thus the additional stiffness effect brought from the volume compensation by the common magnet-rheological damper can be avoided. The spring has simple structure, is convenient to manufacture, is particularly suitable for the occasions of vibration abatement on heavy vehicle suspensions and the like, and can realize a semiactive vibration control on the vehicle suspensions and the like.

Description

technical field [0001] The invention relates to an automobile vibration damping device, in particular to a controllable damping series-type monotube magneto-rheological oil-gas spring, which can be used in automobile suspension or other vibration suppression occasions, and can realize semi-active vibration control. Background technique [0002] Automotive suspension has an important impact on the dynamic performance of the vehicle. It buffers vehicle vibration through springs and damping elements, coordinates the handling stability and ride comfort of the vehicle, and has always been valued by the engineering community. The development process from passive suspension to active suspension and then to semi-active suspension shows that it is an important research direction to control the parameters of the suspension system to better achieve vibration suppression. [0003] According to the basic principle of damping, the geometry of the damping channel, the characteristics of th...

AI Technical Summary

Problems solved by technology

So far, the magneto-rheological (electro-rheological) controllable damper is generally used in combination with the coil spring to form a shock absorber, but it cannot meet the demand for nonlinear stiffness of the suspension such as heavy vehicles

[0004]In order to obtain nonlinear stiffness characteristics, oil-pneumatic springs are generally used as damping devices for heavy-duty vehicles, which have both damping characteristics and nonlinear stiffness characteristics, but the existing Oil and gas spring damping characteristics are uncontrollable

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