Vibration isolation system

Abstract

A dynamic assembly vibration isolation system is provided, which comprises an external shell body connected with a right bracket, a front bracket and a rear bracket, a left bracket, a buffer, a bolt,a connecting rod, a rubber body and an internal shell body. The buffer is positioned between the left bracket and the shell body. The invention is characterized in that: the external shell body is connected with the internal shell body and a hollow cavity is enclosed between; a ventilation hole is made on the external shell; a rubber body is sulfurized on the internal shell body; the connecting rod is planted into the rubber body; the connecting rod is connected with the left bracket via a bolt. A damping fluid and a decoupling film are positioned in the area enclosed by the rubber body and internal shell body; the decoupling film and the rubber body enclose a lower fluid chamber; the decoupling film and the internal shell body enclose an upper fluid chamber; a passage internal cavity, aninertia passage internal cavity and an inertia passage are positioned. Due to the adoption of a fluid blocking type vibration isolation system, the components in the invention can integrate in a compact way and light weight structure and excellent manufacturing technique can be realized. Therefore, under all working conditions, the invention is able to realize outstanding vibration isolation and reduction effect, so as to ensure excellent NVH performance for the whole vehicle. In addition, because the invention resolves the problems of high frequency dynamic hardening and shorter service lifegenerally existed in a rubber suspension vibration isolation system, the invention can be applied to automobiles.

Description

technical field [0001] The invention relates to a power assembly vibration isolation system, in particular to a power assembly vibration isolation system connected with power assembly, vehicle body and other components on a car. Background technique [0002] As the requirements for vehicle performance and driving comfort are getting higher and higher, the country's requirements for vehicle pass-through noise are also getting higher and higher. Since January 1, 2005, national regulations stipulate that the passing noise of the whole vehicle must be less than a certain decibel. Therefore, the noise requirements for each system of the vehicle are getting higher and higher. In addition, users have higher and higher requirements for the NVH characteristics of the vehicle. The function of the powertrain vibration isolation system is to transmit the vibration of the powertrain to the body as little as possible, and it is the most important vibration isolation and noise reduction ...

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is that, in order to make up for the deficiencies of high-frequency dynamic hardening and short service life generally existing in the existing rubber vibration isolation system;

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