Magneto-rheological damper of automobile engine suspension system

Abstract

The invention discloses a magneto-rheological damper of an automobile engine suspension system, comprising a main rubber spring, a throttling disk, a magnetic core assembly and a decoupling film, wherein the damper is used for regulating the magnetic induction intensity at a magneto-rheological liquid channel in the magnetic core assembly through controlling the excitation current of an electromagnetic coil and then regulating the viscosity of magneto-rheological liquid at the magneto-rheological liquid channel to achieve the optimal damping effect. When the magneto-rheological damper is used, the turbulence level of the magneto-rheological liquid in a liquid feeding chamber can be increased through the throttling disk, the high-frequency dynamic hardening of the damper can be effectively inhibited, and the effectively damping frequency range can be widened. The damper has a more ideal dynamic characteristic and meets the use requirement for damping the automobile engine suspension system with high rotating speed; in addition, the damping capacity, the work stability and the convenience in assembly of the damper are improved through improving a floating decoupling film type decoupler, a sealing structure of the magnetic core assembly, a liquid injection hole structure and the like.

Description

technical field [0001] The invention relates to a vibration isolation device, in particular to a magneto-rheological vibration isolator used in an automobile engine suspension system. Background technique [0002] Magnetorheological fluid is a material whose yield stress and viscosity can change with an external magnetic field. This change is fast, reversible and controllable. Based on this feature, magnetorheological fluid can be used for devices controlled by an external magnetic field, such as brakes. , Vibration isolators, etc. The principle of the magnetorheological vibration isolator is to adjust the damping and stiffness of the vibration isolator through the resistance generated by the flow of magnetorheological fluid, so as to attenuate the vibration, and its vibration isolation rate can be controlled by an external magnetic field. [0003] Existing magneto-rheological vibration isolators for automotive engine mount systems generally consist of a shell, a rubber mai...

AI Technical Summary

Problems solved by technology

The existing magneto-rheological vibration isolators for automotive engine mount systems have the following disadvantages: 1) There is no decoupling film or only the decoupling film is used to slow down the high-frequency dynamic hardening, so that the high-frequency vibration isolation performance of the vibration isolator Not ideal; 2) The upper liquid chamber is not equipped with a throttle plate, which cannot effectively improve the high-frequency vibration isolation performance of the vibration isolator; 3) The traditional vibration isolator is equipped with a liquid injection hole in the middle of the shell and an exhaust hole in the reinforcing block , so that it is easy to leak; 4) The decoupler is installed separately, which increases the number of parts and affects the production efficiency; 5) The frequency range of the effective vibration isolation of the existing magneto-rheological vibration isolator is limited, which does not satisfy the high-speed engine mount system vibration isolation requirements

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