# US 12,759,366 B2 · Hydraulic system for damping control > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,759,366 B2 - Document ID: US12759366B2 - Status: Granted - Kind: B2 - Application number: 18/390,088 - Filed: 2023-12-20 - Published: 2024-08-22 - Granted: 2026-10-13 - Earliest claimed: 2023-02-16 - Assignees: Dr. Ing. h.c. F. Porsche Aktiengesellschaft - Applicants: Dr. Ing. h.c. F. Porsche Aktiengesellschaft - Inventors: Stefan Hartlieb - Web page: https://patentgrep.com/patent/US12759366B2 ## CPC - B60G 17/08: Characteristics of fluid dampers (adjusting fluid dampers in general F16F9/44 - F16F9/53) - B60G 13/08: hydraulic - B60G 2202/24: Fluid damper - B60G 2202/415: using other types of valves, e.g. mechanically operated valves - B60G 2206/91: Assembly procedures - B60G: VEHICLE SUSPENSION ARRANGEMENTS (air-cushion vehicles B60V; {cycle suspensions B62K25/00}) ## Abstract A hydraulic system for the preferably active damping control of a motor vehicle. The system includes at least one damper, with which a damper shutoff member is associated and to which at least one hydraulic line is hydraulically connected. In order to simplify the assembly of the hydraulic damper, an end of the hydraulic line facing the damper is equipped with a line shutoff member, wherein the line shutoff member at the end of the hydraulic line facing the damper is integrated into a line connection block, which is secured in a hydraulically sealed but releasable manner to a damper connection block by the damper shutoff member being merged, along with a filling member, into a combined filling valve which is integrated into the damper connection block. ## Claims ### Claim 1 A hydraulic system for active damping control of a motor vehicle, said system comprising: at least one damper, with which a damper shutoff member is associated and to which at least one hydraulic line is hydraulically connected, wherein an end of the hydraulic line facing the damper includes a line shutoff member, wherein the line shutoff member at the end of the hydraulic line facing the damper is integrated into a line connection block, wherein the line connection block is secured in a hydraulically sealed but releasable manner to a damper connection block by the damper shutoff member, wherein the damper shutoff member is merged, along with a filling member, into a combined filling valve which is integrated into the damper connection block, wherein the damper shutoff member comprises a central through-hole which constitutes the filling member in the combined filling valve. ### Claim 2 (depends on 1) The hydraulic system according to claim 1, wherein, in closed positions of the damper shutoff member and the line shutoff member, the damper shutoff member and the line shutoff member constitute metallic seals. ### Claim 3 (depends on 1) The hydraulic system according to claim 1, wherein the damper shutoff member and the line shutoff member are shutoff screws. ### Claim 4 (depends on 1) The hydraulic system according to claim 1, wherein the central through-hole is sealed by a sealing screw in a hydraulically sealed but releasable manner at an end of a filling organ projecting from the damper connection block. ### Claim 5 (depends on 4) The hydraulic system according to claim 4, further comprising an outer multi-edge profile at an end of the filling member, the outer multi-edge profile projecting from the damper connection block, wherein the sealing screw includes an outer multi-edge profile. ### Claim 6 (depends on 1) The hydraulic system according to claim 1, wherein when the damper connection block is secured to the line connection block, the damper connection block and the line connection block restrict a fluid passage that is restricted by the line shutoff member and the damper shutoff member when the line shutoff member and the damper shutoff member assume closed positions. ### Claim 7 (depends on 1) A motor vehicle comprising the hydraulic system of claim 1. ### Claim 8 In a hydraulic system comprising at least one damper, with which a damper shutoff member is associated and to which at least one hydraulic line is hydraulically connected, wherein an end of the hydraulic line facing the damper includes a line shutoff member, wherein the line shutoff member at the end of the hydraulic line facing the damper is integrated into a line connection block, wherein the line connection block is secured in a hydraulically sealed but releasable manner to a damper connection block by the damper shutoff member, wherein the damper shutoff member is merged, along with a filling member, into a combined filling valve which is integrated into the damper connection block, and wherein the damper shutoff member comprises a central through-hole which constitutes the filling member in the combined filling valve, a method for assembling the hydraulic system comprises the step of: prefilling with a hydraulic medium a hydraulic line volume of the hydraulic line and a hydraulic damper volume of the damper before the damper and/or the hydraulic line are preassembled or assembled. ### Claim 9 (depends on 8) The method according to claim 8, wherein the hydraulic line volume of the hydraulic line and the hydraulic damper volume of the damper are filled with a hydraulic medium only after preassembly or assembly of the damper and/or the hydraulic line.