Disclosed herein are various embodiments of a hydraulic actuator that includes one or more check valves having a dynamically varying cracking pressure. In certain embodiments, a hydraulic actuator may be configured to vary the cracking pressure of a check valve based on an operating condition of a pump of the hydraulic actuator. The check valve may be located along a bypass path in the hydraulic actuator, thereby allowing for fluid flow to bypass a pump of the hydraulic actuator by passing through the check valve. The use of such hydraulic actuators is contemplated in, for example, an active suspension system of a vehicle. Additionally, various embodiments of suitable check valves are disclosed. Additionally, methods are disclosed for operation of the check valve and the hydraulic actuator.
PILOT OPERATED BLOW-OFF VALVES FOR HYDRAULIC ACTUATORS
VORGESTEUERTE ABBLASEVENTILE FÜR HYDRAULISCHE AKTUATOREN
CLAPETS DE SOUFFLAGE ACTIONNÉS PAR PILOTE POUR ACTIONNEURS HYDRAULIQUES
2021-01-27
Patent
Elektronische Ressource
Englisch
PILOT OPERATED BLOW-OFF VALVES FOR HYDRAULIC ACTUATORS
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