# US 12,109,863 B2 · Active suspension system > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,109,863 B2 - Document ID: US12109863B2 - Status: Granted - Kind: B2 - Application number: 18/017,451 - Filed: 2021-07-21 - Published: 2023-09-07 - Granted: 2024-10-08 - Earliest claimed: 2020-07-21 - Assignees: Jaguar Land Rover Limited - Applicants: Jaguar Land Rover Limited - Inventors: Luke Birch; Dennis Lausecker - Web page: https://patentgrep.com/patent/US12109863B2 ## CPC - B60G 17/0408: {details, e.g. antifreeze for suspension fluid, pumps, retarding means per se} - B60G 17/08: Characteristics of fluid dampers (adjusting fluid dampers in general F16F9/44 - F16F9/53) - B60G 17/0152: {characterised by the action on a particular type of suspension unit (B60G17/01941 takes precedence)} - B60G 17/016: characterised by their responsiveness, when the vehicle is travelling, to specific motion, a specific condition, or driver input {(B60G17/017 takes precedence)} - B60G 21/073: between wheels on the same axle but on different sides of the vehicle, i.e. the left and right wheel suspensions being interconnected - B60G 2202/24: Fluid damper - B60G 2202/413: Hydraulic actuator - B60G 2202/416: using a pump, e.g. in the line connecting the lower chamber to the upper chamber of the actuator - B60G 2202/44: Axial actuator, e.g. telescopic - B60G 2204/201: of fluid lines - B60G 2204/62: Adjustable continuously, e.g. during driving - B60G 2206/41: Dampers - B60G 2206/60: Subframe construction - B60G 2500/104: continuous - B60G 2600/182: Active control means - B60G 2800/012: Rolling condition - B60G 2800/014: Pitch; Nose dive - B60G 2800/016: Yawing condition - B60G 2800/162: Reducing road induced vibrations - B60G 2800/9122: ARS - Anti-Roll System Control - B60G 2800/9123: Active Body Control [ABC] - B60G 2800/916: Body Vibration Control - B60G: VEHICLE SUSPENSION ARRANGEMENTS (air-cushion vehicles B60V; {cycle suspensions B62K25/00}) ## Abstract Aspects of the present invention relate to an actuator system for a vehicle suspension system comprising: a first actuator comprising a piston, a first upper fluidic chamber and a second lower fluidic chamber, the first and second fluidic chambers separated by the piston; a second actuator comprising a piston, a first upper fluidic chamber and a second lower fluidic chamber, the first and second fluidic chambers separated by the piston; a first hydraulic gallery fluidly connecting the first upper fluidic chamber of the first actuator and one of the first and second fluidic chambers of the second actuator; a second hydraulic gallery fluidly connecting the second lower fluidic chamber of the first actuator and the other of the first and second fluidic chambers of the second actuator; and at least one pump configured to pump fluid between the first and second hydraulic galleries. ## Claims ### Claim 1 An actuator system for a vehicle suspension system comprising: a first actuator comprising a piston, a first upper fluidic chamber and a second lower fluidic chamber, the first and second fluidic chambers separated by the piston; a second actuator comprising a piston, a first upper fluidic chamber and a second lower fluidic chamber, the first and second fluidic chambers separated by the piston; a first hydraulic gallery fluidly connecting the first upper fluidic chamber of the first actuator and one of the first and second fluidic chambers of the second actuator; a second hydraulic gallery fluidly connecting the second lower fluidic chamber of the first actuator and the other of the first and second fluidic chambers of the second actuator; and at least one pump configured to pump fluid between the first and second hydraulic galleries, wherein the first actuator is coupled to a first wheel and the second actuator is coupled to a second wheel, and wherein the first and second wheels share a common axle. ### Claim 2 (depends on 1) The actuator system of claim 1, wherein the system comprises a single, bidirectional pump configured to pump fluid between the first and second hydraulic galleries. ### Claim 3 (depends on 1) The actuator system of claim 1, wherein the first hydraulic gallery fluidly connects the first upper fluidic chamber of the first actuator and the second lower fluidic chamber of the second actuator, and the second hydraulic gallery fluidly connects the second lower fluidic chamber of the first actuator and the first upper fluidic chamber of the second actuator. ### Claim 4 (depends on 3) The actuator system of claim 3, comprising a cross over connection, the cross over connection fluidly connecting the first fluidic chamber of the first actuator and the second fluidic chamber of the second actuator; and fluidly connecting the second fluidic chamber of the first actuator and the first fluidic chamber of the second actuator. ### Claim 5 (depends on 1) The actuator system of claim 1, wherein the first hydraulic gallery fluidly connects the first upper fluidic chamber of the first actuator and the first upper fluidic chamber of the second actuator, and the second hydraulic gallery fluidly connects the second lower fluidic chamber of the first actuator and the second lower fluidic chamber of the second actuator. ### Claim 6 (depends on 5) The actuator system of claim 5, comprising a through connection, the through connection fluidly connecting the first fluidic chamber of the first actuator and the first fluidic chamber of the second actuator; and fluidly connecting the second fluidic chamber of the first actuator and the second fluidic chamber of the second actuator. ### Claim 7 (depends on 1) The actuator system of claim 1, comprising at least one controller configured to control the at least one pump to pump fluid between the first and second hydraulic galleries. ### Claim 8 (depends on 1) A vehicle comprising at least one actuator system as claimed in claim 1. ### Claim 9 (depends on 8) The vehicle of claim 8, comprising a first actuator system associated with a first axle of the vehicle and a second, separate actuator system associated with a second, different axle of the vehicle. ### Claim 10 (depends on 1) A method of operating the actuator system as claimed in claim 1, the method comprising: determining a target pressure for at least one of the first and second chambers of the first and/or second actuators; and controlling the at least one pump to generate the determined target pressure or pressures. ### Claim 11 (depends on 10) A non-transitory computer readable medium comprising computer readable instructions that, when executed by a processor, cause performance of a method of claim 10.