A hydraulic actuator for a vehicle suspension includes: a pump assembly including an electric motor coupled to first and second pumps to transfer hydraulic fluid to a discharge header; a first isolation valve having an elastomeric seat and configured to selectively block fluid flow from a port in fluid communication with a height-adjustable damper to the discharge header; and a second isolation valve having a metal seat and connected in series with the first isolation valve to selectively block fluid flow from the port to the discharge header. The first pump transfers hydraulic fluid from a supply fluid passage to a first discharge header, and the second pump transfers hydraulic fluid from the supply fluid passage to a second discharge header. A recirculation valve selectively controls fluid flow from the second discharge header to the supply fluid passage.
SUSPENSION HYDRAULIC LIFT ACTUATOR FOR AXLE TRIM HEIGHT CONTROL
HYDRAULISCHER HUB-AKTUATOR FÜR DIE HÖHENVERSTELLUNG DER ACHSVERKLEIDUNG
ACTIONNEUR DE LEVAGE HYDRAULIQUE DE LA SUSPENSION POUR LE RÉGLAGE DE LA HAUTEUR DE L'ASSIETTE DE L'ESSIEU
19.06.2024
Patent
Elektronische Ressource
Englisch
SUSPENSION HYDRAULIC LIFT ACTUATOR FOR AXLE TRIM HEIGHT CONTROL
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