Engine magneto-rheological hydraulic mount method based on circumferential and radial flowing mode

Abstract

The invention discloses an engine magneto-rheological hydraulic mount method based on a circumferential and radial flowing mode. By means of the combination of a circumferential damping passageway and a radial damping passageway, the length of the damping passageways is increased in the limited structural size; the longer the damping passageways are, the larger the output damping force becomes; due to the fact that the amplitude of an engine is small, the maximum damping force can be increased by increasing the length of the damping passageways, and the adjustable range of the damping force can be widened; the width of the radial damping passageway is determined by the size of an insertion pin, and the width of the radial damping passageway can be changed by changing the size of the insertion pin; a liquid injection hole and an exhaust hole are formed in the middle of a reinforcing block, and therefore exhaust is more smooth in the liquid injection process, and liquid injection can be more convenient; a shell is made of magnetism isolation aluminum alloy material, and therefore magnetic flux leakage is weakened for a magnetic circuit when the engine works.

Description

technical field [0001] The invention relates to a vibration isolation device, in particular to an engine magneto-rheological hydraulic mount based on a circumferential radial flow mode. Background technique [0002] The viscosity and yield stress of magnetorheological fluid can change with the change of the external magnetic field, and this change has the characteristics of fast, reversible and controllable. Magneto-rheological hydraulic mount is to use the characteristics of magnetorheological fluid to change the output damping force of magnetorheological hydraulic mount by controlling the current in the excitation coil to change the magnetic field strength, so as to attenuate the vibration of the engine. The process responds quickly, the process is continuous and reversible. [0003] Existing magnetorheological hydraulic mounts based on flow patterns for vibration isolation of automobile engines have the following deficiencies: 1) Traditional magnetorheological hydraulic ...

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Problems solved by technology

[0003] Existing magnetorheological hydraulic mounts based on flow patterns for vibration isolation of automobile engines have the following deficiencies: 1) Traditional magnetorheological hydraulic mounts based on flow patterns often only have circumferential damping channels. The amplitude is relatively small, the adjustable range of the damping force of the mount is relatively poor, and it cannot provide a large damping force at low frequencies, which limits the vibration isolation effect of the mount system; 2) The traditional mount is equipped with liquid injection in the middle of the shell 3) Traditional mounts usually have only one injection hole, making it difficult to inject liquid, and air bubbles are likely to be generated during the liquid injection process

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