Passive fluidic resistor suspension with equivalent mechanical structure

Abstract

The invention relates to a passive fluidic resistor suspension with an equivalent mechanical structure, and belongs to the technical field of engine supporting structures. The passive fluidic resistor suspension with the equivalent mechanical structure mainly comprises an external rubber mainspring, an upper connecting bolt connected with the external rubber mainspring, an external supporting spring, an upper fluid chamber, a lower fluid chamber, an inner gas chamber, an inner spring, a mass block and the like, wherein the inner spring and the mass block are arranged in the inner gas chamber. The upper fluid chamber which tightly abuts against the upper end face of a partition board between the upper fluid chamber and the lower fluid chamber, an external gas chamber and the inner gas chamber are arranged in sequence from outside to inside. The lower fluid chamber tightly abuts against the lower end face of the partition board between the upper fluid chamber and the lower fluid chamber. An inertia channel which enables the upper fluid chamber to be communicated with the lower fluid chamber is arranged in the partition board between the upper fluid chamber and the lower fluid chamber. According to the passive fluidic resistor suspension with the equivalent mechanical structure, the notch frequency of the fluidic resistor suspension is constant within a low frequency range, but the dynamic stiffness of the fluidic resistor suspension is reduced as far as possible within a notch frequency range; in addition, the dynamic stiffness of a corresponding peak frequency is reduced as far as possible, the noise lowering effect and the damping effect of the engine fluidic resistor suspension are improved within the low frequency range, and the fatigue performance and the creep property of the fluidic resistor suspension can also be improved.

Description

technical field [0001] The invention relates to an engine support structure, in particular to an engine fluid resistance mount. Background technique [0002] The vehicle engine assembly mount system refers to the elastic connection system between the engine power assembly and the vehicle body. The quality of the system design directly affects the ride comfort of the vehicle. However, with the lightweight design of automobiles, especially the application of four-cylinder engines with poor balance in front-engine-front-drive vehicles, the powertrain has an increasing impact on the ride comfort of automobiles. The vehicle powertrain is both a vibration source and an object to be isolated. [0003] As a vibration isolation element in the vehicle powertrain suspension system, the rubber mount once played an important role. At present, it is still used as a vibration isolation element in a well-balanced engine. However, the dynamic characteristics of rubber suspension components...

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to overcome the problem that the dynamic stiffness at the peak frequency point will become larger when the dynamic stiffness at the notch frequency point of the traditional typical liquid resistance mount is reduced, and to provide a vibration that can better control the vibration in the low frequency region of the engine. A passive hydraulic mount with an equivalent mechanical structure for vibration reduction and isolation

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