Integrated piston assembly for electric machine

By designing the bearing assembly and fluid bearing of the integrated piston assembly, the problems of unstable fluid supply and bearing wear in the closed-cycle engine are solved, the operating stability and efficiency of the vehicle are improved, and the service life of the bearing is extended.

CN120811016APending Publication Date: 2025-10-17HYLIION HOLDINGS CORP
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Patent Information

Application Number
CN202510440007.3
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Priority Date
2024-04-10
Filing Date
2025-04-09
Publication Date
2025-10-17

AI Technical Summary

Technical Problem

In the prior art, bearing assemblies used in closed-cycle engines for large vehicles suffer from unstable fluid supply and bearing wear during the efficient transportation of cargo, affecting the stability and efficiency of the vehicle.

Method used

An integrated piston assembly is designed, including a bearing assembly and a fluid bearing. By supporting the shaft and forming an integrated structure with the bearing housing, it provides a stable fluid supply and reduces wear, thereby increasing the service life of the bearing and the operating stability of the vehicle.

Benefits of technology

The stability of fluid supply and the wear resistance of bearings are achieved, the operation stability and efficiency of vehicles are improved, and the service life of bearings is extended.

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Abstract

A linear motor includes a shaft, a primary piston assembly operably coupled with the shaft, a stator assembly supporting the shaft and housing a load device, and a bearing assembly supporting an end of the shaft. The bearing assembly includes a bearing housing and a fluid bearing within the bearing housing. The bearing housing includes an opening for receiving the shaft therethrough. The linear motor also includes a secondary piston assembly integrally formed with the shaft and at least a portion of the bearing assembly for providing fluid to the bearing assembly.
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