A semi-active mount for powertrain

Abstract

The invention discloses a semi-active mount of a power assembly. When the mount is excited by low frequency and large amplitude from the power assembly or the road surface, the electromagnetic coil will be energized, and the electromagnetic coil will generate electromagnetic force, and the solution with the iron core will be installed. The coupling diaphragm is adsorbed on the flow channel partition. At this time, the decoupling diaphragm blocks the second flow channel on the flow channel partition, and the fluid can only flow from the first flow channel to another chamber. The cross-sectional area of ​​the first flow channel is much smaller than the inner surface of the rubber main spring, so the liquid will provide a large damping force to limit the displacement of the powertrain; when the suspension is excited by high frequency and small amplitude from the powertrain , the electromagnetic coil is in a power-off state, the flow area of ​​the second flow channel is larger than that of the first flow channel, and the fluid flows from the second flow channel into another chamber, basically without passing through the first flow with large liquid resistance; The suspension has simple structure, relatively low cost and relatively high reliability.

Description

technical field [0001] The invention relates to the technical field of automobiles, in particular to a semi-active mount of a power assembly. Background technique [0002] With the development of the automobile industry, people have higher and higher requirements for the comfort of the car, and the powertrain suspension system is to improve the vehicle NVH (English full name: Noise, Vibration, Harshness, hereinafter referred to as NVH) An important part of performance, it undertakes the role of vibration reduction and noise reduction. [0003] Traditional powertrain semi-active mounts are generally divided into semi-active mounts that control the length of the inertial channel, semi-active mounts that control the penetration of the upper and lower liquid chambers, semi-active mounts that control the cross-sectional area of ​​the inertial channel, and magnetorheological fluid semi-active mounts. Active suspension and air spring semi-active suspension. Among them, the semi-a...

AI Technical Summary

Problems solved by technology

Among them, the semi-active mount that controls the length of the inertial channel, the semi-active mount that controls the penetration of the upper and lower liquid chambers, the semi-active mount that controls the cross-sectional area of ​​the inertial channel, and the air spring semi-active mount all require a solenoid valve structure. The reliability of the structure will have a major impact on the reliability of the suspension system, so the design requirements for the solenoid valve structure are relatively high, and the use of the solenoid valve structure makes the overall cost of the product higher

[0004] In addition, in view of the above reasons, the application environment requirements of the current semi-active mount are relatively high, and its application range is relatively limited.

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