Semi-active control magnetorheological hydraulic mount for automotive powertrain

Abstract

The invention relates to a semi-active control magnetorheological hydraulic mount for an automotive powertrain, which belongs to a semi-active control element used for vibration control of an engine and is an engine mount filled with magnetorheological fluid, wherein the viscosity of the fluid changes along with the change of the strength of a magnetic field, and the semi-active control magnetorheological hydraulic mount mainly comprises a metal framework, a rubber main spring, a coil holder, an electromagnetic coil, a magnetic conductive channel body, an inertia channel assembly, a rubber basement membrane, a bottom framework and the like, and can control the strength of applied current according to the working condition of the engine by utilizing the viscosity of the magnetorheological fluid and the following performance of the strength of the magnetic field, further change the viscosity of the fluid, lead the vibration of the engine to be well attenuated in a wider frequency band and further actively isolate the transfer of vibration noise of the engine into an automobile in the wider frequency band. A vibration damper for the magnetorheological hydraulic mount for the engine can effectively isolate the vibration of the engine, reduce the noise in the automobile and improve the NVH properties of the whole automobile, thereby having great market potential and broad prospects.

Description

Technical field: [0001] The invention relates to a magneto-rheological hydraulic mount with semi-active control of a power assembly, which belongs to the field of auto parts. Background technique: [0002] In recent years, on the one hand, with the development of automobile design towards high torque and light weight, the vibration of the engine has increased and the NVH (noise, vibration and harshness) characteristics of the vehicle have deteriorated. The comfort requirements are getting higher and higher, so that the traditional powertrain passive mount cannot well meet the vibration isolation requirements between the engine vibration and the frame. The introduction of engine magneto-rheological hydraulic mount damping device can effectively isolate the transmission of engine vibration and noise to the interior of the vehicle. Compared with traditional passive mounts and other forms of active mounts such as piezoelectric mounts, the powertrain magneto-rheological hydrauli...

AI Technical Summary

Problems solved by technology

[0002] In recent years, on the one hand, with the development of automobile design towards high torque and light weight, the vibration of the engine has increased and the NVH (noise, vibration and harshness) characteristics of the vehicle have deteriorated. The comfort requirements are getting higher and higher, so that the traditional powertrain passive mount cannot well meet the vibration isolation requirements between the engine vibration and the frame

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