Bushing type hydraulic stopper and supporting structure for vehicle power system

By using a bushing-type hydraulic stopper with a separate modular design, the problem of damping effect coupling in the suspension structure of electric vehicle power system is solved, achieving effective damping and improved NVH performance under large impact conditions, and promoting commonality and cost reduction.

CN122083095APending Publication Date: 2026-05-26HYUNDAI MOTOR CO LTD +1
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Patent Information

Application Number
CN202411696798.8
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-11-25
Publication Date
2026-05-26

AI Technical Summary

Technical Problem

The existing electric vehicle powertrain suspension structure has damping effects coupled in different directions, resulting in decreased NVH performance, making tuning difficult, and lacking commonality, making it difficult to apply in different vehicles.

Method used

The bushing-type hydraulic stopper, which adopts a split modular design, generates a damping effect under large impact conditions through the fluid channels of the main diaphragm cavity and the auxiliary diaphragm cavity, achieving 0-360° radial damping. Furthermore, the flow channel structure is simple and the damping direction is decoupled.

Benefits of technology

It improves the handling of electric vehicle power systems under high-impact conditions, reduces the difficulty of NVH performance tuning, and helps to achieve commonality and reduce costs.

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Abstract

The present invention relates to a bushing-type hydraulic stopper and a support structure for a vehicle power system, the bushing-type hydraulic stopper comprising: a main diaphragm chamber formed in an annular shape having a central opening and filled with a fluid through which a support passes; the auxiliary diaphragm cavity is positioned on the side surface of the main diaphragm cavity; the fluid channel is mounted on the periphery of the main diaphragm assembly and is in fluid communication with the main diaphragm cavity and the auxiliary diaphragm cavity; when the main diaphragm cavity is extruded by the supported piece, fluid flows from the main diaphragm cavity to the auxiliary diaphragm cavity through the fluid channel. According to the bushing type hydraulic stopper, the damping effect can be generated only under the large impact driving condition, the damping effect can be generated in the radial direction of 0-360 degrees, the NVH / controllability adjustment difficulty is lowered, sharing and platformization can be achieved easily, and therefore the cost is lowered.
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