Double-piston electro-rheological shock absorber

Abstract

The invention discloses a double-piston electro-rheological shock absorber which has a continuously adjustable damping function and is mainly used for semi-active control over a vehicle suspension system. The double-piston electro-rheological shock absorber mainly comprises a piston, an annular piston, an inner barrel, an outer barrel, a general valve, a tapered gap, a plenum chamber and a positive plate, the inner barrel is completely divided into an upper working cavity and a lower working cavity through the piston, the upper working cavity is filled with general hydraulic oil, the hydraulic oil flows between the inner barrel and an annular cavity through the general valve, the lower working cavity is filled with electro-rheological fluid, the electro-rheological fluid flows between the inner barrel and the annular cavity through the tapered gap, and the optimal damping force needed for the shock absorber is generated by the tapered gap and the general valve. The shock absorber is provided with a floating piston, so that changes, caused by a piston rod in the moving process, of the volume of the oil in the upper working cavity are made up for in the working process of the shock absorber; the bottom of the shock absorber is provided with the tapered gap, controllable damping force is provided, and meanwhile sediment of the electro-rheological fluid can be rapidly removed in the working process.

Description

technical field [0001] The invention relates to a shock absorber, in particular to a double-piston electrorheological shock absorber, which is mainly used for semi-active control of wheeled vehicles and also for other shock absorbing systems. Background technique [0002] The traditional automobile suspension system is a passive damping system, the performance of the elastic element and the shock absorber of this system is not adjustable, especially the damping of the shock absorber is not adjustable. Its main disadvantage is that the damping provided by the shock absorber is only ideal for a certain working condition, and the ideal damping and vibration reduction effect cannot be achieved for working conditions far away from the specified working conditions. Obviously, the most ideal is the so-called active or semi-active suspension system. At this time, the performance of its elastic elements and damping elements can be adjusted and controlled, that is, it can change the p...

AI Technical Summary

Problems solved by technology

[0004] At present, there are structural designs for electrorheological shock absorbers, but the general structure is complex, the heat dissipation is not good, and most of them load the voltage on the piston rod, and the power supply method has problems such as instability and unreliability, and the existing current The problem of fluid change and precipitation has not been solved

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