A semi-active magnetic-sensitive rubber automobile engine mount

Abstract

A semi-active magnetic-sensing rubber automobile engine suspension device comprises an upper outer shell, a lower outer shell, a magnetic-sensing rubber main spring, a magnetic-sensing rubber plug block, a center bolt, a field core, a field coil, a platform, an electric control unit, an engine rotating speed sensor, a brake main cylinder pressure sensor, a gear shifting position sensor, a spiral spring and a supporting wafer. The magnetic-sensing rubber main spring and the magnetic-sensing rubber plug block are arranged inside the upper outer shell. The field coil and the field core are arranged in an internal cavity of the magnetic-sensing rubber main spring. The field coil is fixedly connected with the platform. The upper outer shell and the lower outer shell are fixedly connected through connecting holes formed in the upper outer shell and the lower outer shell. The electric control unit is connected with the field coil through a control line, judges the working condition of an engine and an automobile according to signals input by the engine rotating speed sensor, the brake main cylinder pressure sensor and the gear shifting position sensor and sends a control signal to the field coil, so that magnetic-sensing rubber automobile engine suspension is controlled and adjusted, and the riding comfort of the automobile is improved.

Description

technical field [0001] The invention relates to an engine mount with controllable stiffness and damping, in particular to a semi-active magnetic-sensitive rubber automobile engine mount, which uses a new type of intelligent material—magnetic-sensitive rubber as a damping medium . The invention belongs to the technical field of automobile vibration and noise control. Background technique [0002] With the advancement of automobile technology and the development of society, people pay more and more attention to the ride comfort of automobiles. When the engine is running, it will generate broadband, multi-vibration sources and multi-main frequency vibrations, making the vibration of the engine an important and complex source of vibration and noise on the car. Therefore, the engine mount system has been widely used as an effective means of vibration reduction. application. The ideal engine mount vibration reduction characteristics are: low frequency (below 30Hz) has high stif...

AI Technical Summary

Problems solved by technology

At present, most of the car engine mounts are passive rubber mounts and hydraulic mounts, which cannot adjust the stiffness or damping in time according to the engine working conditions, which affects the improvement of the car's NVH performance.

Although the semi-active magnetorheological fluid automobile engine mount has the advantages of fast response speed, low energy consumption, and large adjustment range, it also has disadvantages such as magnetorheological fluid settlement, need for sealing, and poor stability.

However, the active hydraulic vehicle engine mount has problems such as complex structure, high power consumption, and high cost, which limit its wide-scale application.

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