公开(公告)号：WO2023006238A1

公开(公告)日：2023-02-02

申请号：PCT/EP2022/025026

申请日：2022-01-26

Applicant: DANFOSS POWER SOLUTIONS II TECHNOLOGY AS

Inventor： LOWMAN, Roger D. ,  LARISH, Chad Anthony ,  SMITH, Stephen ,  NEWBAUER, Sam

IPC: E02F9/22 ,  F15B21/14 ,  F15B1/02 ,  F15B21/08 ,  E02F9/2207 ,  E02F9/2217 ,  E02F9/2296 ,  F15B1/021 ,  F15B21/082 ,  F15B2211/3057 ,  F15B2211/3144 ,  F15B2211/327 ,  F15B2211/625 ,  F15B2211/6313 ,  F15B2211/665 ,  F15B2211/6656 ,  F15B2211/7053 ,  F15B2211/8613

Abstract: A hydraulic system can include a hydraulic actuator including a piston rod slidably disposed within a housing having a base-side port and a rod-side port, a hydraulic pump, a hydraulic reservoir, an accumulator, a first control valve operable to selectively control flow from the pump to the base-side port and from the base-side port to the reservoir, a second control valve operable to selectively control flow from the pump to the rod-side port and from the rod-side port to the reservoir, a third control valve operable to selectively allow flow between the base-side port and the accumulator, and a controller for operating the hydraulic system and including a ride control mode in which damping is provided to the hydraulic actuator by operation of the first, second, and third control valves.

公开(公告)号：WO2022022857A2

公开(公告)日：2022-02-03

申请号：PCT/EP2021/025285

申请日：2021-07-26

Applicant: DANFOSS POWER SOLUTIONS II TECHNOLOGY A/S

Inventor： LOWMAN, Roger, D. ,  LARISH, Chad Anthony ,  SMITH, Stephen ,  NEWBAUER, Sam

IPC: E02F9/22 ,  F15B21/14 ,  E02F9/2207 ,  E02F9/2217 ,  F15B1/021 ,  F15B21/082 ,  F15B2211/20546 ,  F15B2211/30515 ,  F15B2211/3057 ,  F15B2211/3105 ,  F15B2211/3111 ,  F15B2211/3127 ,  F15B2211/3144 ,  F15B2211/327 ,  F15B2211/353 ,  F15B2211/50527 ,  F15B2211/50581 ,  F15B2211/625 ,  F15B2211/6309 ,  F15B2211/6313 ,  F15B2211/6658 ,  F15B2211/7053

Abstract: A hydraulic system can include a hydraulic actuator including a piston rod slidably disposed within a housing having a base-side port and a rod-side port, a hydraulic pump, a hydraulic reservoir, an accumulator, a first control valve operable to selectively control flow from the pump to the base-side port and from the base-side port to the reservoir, a second control valve operable to selectively control flow from the pump to the rod-side port and from the rod-side port to the reservoir, a third control valve operable to selectively allow flow between the base-side port and the accumulator, and a controller for operating the hydraulic system and including a ride control mode in which damping is provided to the hydraulic actuator by operation of the first, second, and third control valves.