公开(公告)号：US20240360850A1

公开(公告)日：2024-10-31

申请号：US18566428

申请日：2022-06-03

Applicant: Danfoss Power Solutions II Technology A/S

Inventor： Chad Anthony LARISH ,  Roger D. LOWMAN ,  Aaron Hertzel JAGODA

IPC: F15B13/04 ,  F15B11/16

CPC classification number: F15B13/0417 ,  F15B11/165 ,  F15B2211/20546 ,  F15B2211/6313

Abstract: A load sense hydraulic system includes pressure sensors that provide feedback to an electronic controller to monitor a pressure margin between a pump supply pressure and an actuator meter-in load pressure. Pre-collapse and collapse of the pressure margin (the collapse indicating a deadhead or stall condition of the actuator), can be tracked by the electronic controller to establish a normal operating pressure margin. The established normal operating pressure margin can be assessed by the controller against a current, actual pressure margin based on feedback from the pressure sensors. A pre-determined threshold variation by the actual pressure margin from the normal operating pressure margin provides an indication of deadhead or stall condition to the controller. The controller may then responsively make modifications to the load sense hydraulic system to remedy the deadhead/stall condition.

公开(公告)号：US20220136534A1

公开(公告)日：2022-05-05

申请号：US17574050

申请日：2022-01-12

Applicant: Danfoss Power Solutions II Technology A/S

Inventor： Aaron Hertzel JAGODA ,  Eric Joseph MANN

IPC: F15B21/08 ,  F16H3/44 ,  F16H3/72 ,  F15B11/16 ,  E02F9/22 ,  H02K7/108 ,  H02K7/116 ,  H02K11/00 ,  F16H47/04

Abstract: A variator includes an epicyclic gear set that has at least three nodes. The variator includes a pumping unit connected to a first node of the epicyclic gear set. The variator includes a clutch connected to a second node of the epicyclic gear set. The clutch is selectively movable between three positions. When in the first position, the clutch allows the second node to freewheel. When in the second position, the clutch connects the second node to a fixed surface. When in the third position, the clutch connects the second node to an electric motor. The variator includes a receiver connected to the third node of the epicyclical gear set. The receiver is configured to receive a drive shaft.