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, an inertia 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 life generally existed in a rubber suspension vibration isolation system, the invention can be applied to automobiles.

Description

Technical field [0001] The invention relates to a powertrain vibration isolation system, in particular to a powertrain vibration isolation system connected to a powertrain, a car body and other components on a car. Background technique [0002] As the requirements for vehicle performance and driving comfort become higher and higher, the country has higher and higher requirements for vehicle passing noise. Since January 1, 2005, national regulations stipulate that the passing noise of the entire vehicle must reach the requirement of less than a certain decibel. Therefore, the noise requirements of the various systems of the vehicle are getting higher and higher. In addition, users have increasingly 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. It is the most important vibration isolation and noise reduction system for the ent...

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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