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US 2026/0034845 A1Published application
Independent and cross-linked hydraulic actuator systems
AssigneeClearMotion, Inc.
InventorsClive Tucker, Marco Giovanardi, Jack A. Ekchian
Life of this patent
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Abstract
Apparatus and methods are described where multiple linear and/or rotary actuators operate cooperatively in, for example, cross-linked arrangements to control the motion of sprung and unsprung masses in a vehicle. The actuators may include linear primary suspension actuators, spring perch actuators and/or rotary roll-bar actuators that, in some operating modes, are driven directly or indirectly by one or more hydraulic machines.
Claims21
A suspension system for a vehicle, comprising:
- a first linear actuator interposed between a sprung mass of the vehicle and an unsprung mass of the vehicle;
- and
- a first rotary actuator;
- wherein the first linear actuator and the first rotary actuator are configured and positioned to cooperatively apply a roll moment on a vehicle body of the vehicle.
1 more element
An active suspension system comprising:
- a first hydraulic actuator assembly that includes a first primary hydraulic actuator directly driven by a first hydraulic device, wherein the first primary hydraulic actuator includes a first compression volume and a first extension volume;
- a second hydraulic actuator assembly that includes a second primary hydraulic actuator directly driven by a second hydraulic device, wherein the second primary hydraulic actuator includes a second compression volume and a second extension volume;
- a rotary hydraulic roll bar actuator operatively coupled to a roll bar and configured to be driven by a combination of the first and second hydraulic devices;
- wherein, in at least one mode of operation, the first primary hydraulic actuator, the second primary hydraulic actuator and the rotary hydraulic roll bar actuator are configured and positioned to cooperatively apply a roll moment to a vehicle body.
1 more element
A method of controlling a suspension system of a vehicle, the method comprising:
- actuating a first linear actuator interposed between a sprung mass of the vehicle and an unsprung mass of the vehicle;
- and
- actuating a rotary actuator;
- and
- cooperatively applying, by the first linear actuator and the rotary actuator, a roll moment to a vehicle body of the vehicle.
2 more elements
Dependencies are inferred from the claim text.