STORAGE PISTON DEVICE
Patent Information
- Application Number
- DE502022008013
- Authority / Receiving Office
- DE · DE
- Patent Type
- Patents
- Current Assignee / Owner
- Priority Date
- 2021-05-27
- Filing Date
- 2022-03-03
- Publication Date
- 2026-06-11
- Estimated Expiration
- 2042-03-03
AI Technical Summary
Conventional hydraulic accumulator piston devices in electric vehicles require high radial contact forces for effective guidance and sealing, leading to increased friction, wear, and reduced sealing effectiveness, especially at low temperatures, which impairs energy recovery efficiency.
The accumulator piston device is designed to be demolded axially from a mold along its longitudinal axis, eliminating parting lines and allowing low radial contact forces, using a guide ring for guidance and a lip seal for sealing, which can be manufactured cost-effectively from plastic via injection molding.
This design achieves rapid pressure medium response and reduced friction, ensuring effective sealing over a wide temperature range, enhancing energy recovery efficiency and reducing wear.