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
2024-06-19
Patent
Electronic Resource
English
Suspension hydraulic lift actuator for axle trim height control
European Patent Office | 2024
|SUSPENSION HYDRAULIC LIFT ACTUATOR FOR AXLE TRIM HEIGHT CONTROL
European Patent Office | 2022
|SUSPENSION HYDRAULIC LIFT ACTUATOR FOR AXLE TRIM HEIGHT CONTROL
European Patent Office | 2022
|