公开(公告)号：US11946462B2

公开(公告)日：2024-04-02

申请号：US16700407

申请日：2019-12-02

Applicant: Danfoss Power Solutions Inc.

Inventor： Jaromir Tvaruzek ,  Samuel Hall ,  Phil Evans ,  Dennis Greene

IPC: F04B1/26 ,  F01B3/00 ,  F04B1/30 ,  F04B1/34 ,  F04B1/20 ,  F04B49/00 ,  F04B49/12

CPC classification number: F04B1/26 ,  F01B3/0058 ,  F04B1/30 ,  F04B1/34 ,  F04B1/20 ,  F04B49/002 ,  F04B49/12 ,  F15B2211/41536

Abstract: Hydraulic axial piston unit having a rotational group for driving or being driven by a driving shaft, and a tiltable displacement element for adjusting the displacement volume of the rotational group. The rotational group includes a rotatable cylinder block in which working pistons are mounted reciprocally moveable in cylinder bores for conveying hydraulic fluid from an inlet port to an outlet port on a valve segment. At least two control ports are located on the valve segment each between the inlet port and the outlet port. The control ports can be brought sequentially in fluid connection with the cylinder bores when the cylinder block is rotating. At least one hydraulic fluid injector is connected fluidly to one control port, for sequentially injecting pressurized hydraulic fluid via the control port into the passing cylinder bores. Via the other control port hydraulic fluid can be drained from passing cylinder bores.

公开(公告)号：US20210164501A1

公开(公告)日：2021-06-03

申请号：US16700407

申请日：2019-12-02

Applicant: Danfoss Power Solutions Inc.

Inventor： Jaromir Tvaruzek ,  Samuel Hall ,  Phil Evans ,  Dennis Greene

IPC: F15B21/00

Abstract: Hydraulic axial piston unit having a rotational group for driving or being driven by a driving shaft, and a tiltable displacement element for adjusting the displacement volume of the rotational group. The rotational group includes a rotatable cylinder block in which working pistons are mounted reciprocally moveable in cylinder bores for conveying hydraulic fluid from a kidney-shaped inlet port to a kidney-shaped outlet port on a valve segment. At least two control ports are located on the valve segment each between the respective circumferential ends of the kidney-shaped inlet port and the outlet port. The control ports can be brought sequentially in fluid connection with the cylinder bores when the cylinder block is rotating. At least one hydraulic fluid injector is connected fluidly to one control port, for sequentially injecting pressurized hydraulic fluid via the control port into the passing cylinder bores. Via the other control port hydraulic fluid can be drained from passing cylinder bores.