Multi-inertial channel semi-active control hydraulic mount based on magnetorheological fluid

Abstract

The invention relates to a multi-inertial-channels semi-active control hydraulic suspension mount based on a magnetorheological fluid. The multi-inertial-channels semi-active control hydraulic suspension mount is composed of a suspension shell group and an inertia channel plate group, wherein the suspension shell group comprises a rubber main spring, a rubber bottom film, a corrugated pipe spring,an annular sealing ring and the magnetorheological fluid, and the inertia channel group comprises an inertia channel plate, electromagnetic coils, a magnetic separation strip and a coil sealing ring;a power vibration damper composed of the corrugated pipe spring and the inertia channel plate located among the suspension shell, the coil sealing ring and the inertia channel plate can attenuate thevibration energy acting on the inertia channel plate, four independent inertia channels are symmetrically arranged on the inertia channel plate, current size and current existence in the four independent electromagnetic coils can be independently controlled, then damping size in each inertia channel is dynamically controlled by controlling the current size in each electromagnetic coil, vibrationenergy absorbed by the suspension mount can be covered from low frequency to high frequency, the influence of the vibration energy of parts and the like come from an engine on an automobile is reduced, and the riding comfort of the automobile is improved.

Description

technical field [0001] The invention belongs to the technical field of engine mounts for automobiles, and in particular relates to a multi-inertia channel semi-active control hydraulic mount based on magneto-rheological fluid. Background technique [0002] As consumers pay more and more attention to the subjective experience of car rides, good NVH performance has gradually become one of the core competitiveness of cars. However, as the power of the engine increases and the weight of the power system becomes lighter, the vibration excitation of the powertrain continues to intensify, which puts forward higher requirements on the performance of the automotive vibration isolation suspension system. At present, common suspension systems include rubber suspension, hydraulic suspension, semi-active control suspension and active suspension. Compared with the traditional passive mounting method, the semi-active control mount can well attenuate the transmission of engine noise to the...

AI Technical Summary

Problems solved by technology

However, the disadvantages of magnetorheological fluids are insufficient shear yield stress and insufficient torsional force. These shortcomings have always restricted the application of magnetorheological fluids.

[0004] Chinese patent CN 103148158 A discloses a magneto-rheological hydraulic mount for engines based on extrusion mode, which forms an extrusion damping channel through magnetic pole plates and extrusion pole plates, but the damping force formed by extrusion mode is small, so Its adjustable damping range is low

Chinese patent CN 104074919 A ​​discloses a magneto-rheological hydraulic mount for engines based on a circumferential radial flow pattern, which uses a combination of a circumferential damping channel and a radial damping channel, although the length of the damping channel is increased in a limited space , but it has disadvantages such as complicated structure and complicated installation process

U.S. Patent US2017 / 0152911 A1 discloses a dual-channel engine mount, but its sealing conditions are relatively high and its structure is complicated

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