公开(公告)号：US12173727B2

公开(公告)日：2024-12-24

申请号：US17856113

申请日：2022-07-01

Applicant: Eaton Intelligent Power Limited

Inventor： Cody Mackey ,  Martin Augustine Clements ,  Matthew Reinhardt

IPC: F04D5/00 ,  F04D29/24 ,  F04D29/46

Abstract: A regenerative pump includes a housing defining a cavity having a fluid inlet arrangement and fluid outlet arrangement, and a channel having an open volume extending between the fluid inlet arrangement and the fluid outlet arrangement. A rotatable shaft extends into the housing. An impeller is mounted to the shaft within the cavity and has a plurality of vanes spaced circumferentially around the axis and opening into the channel. An arm arrangement at least partially defines walls of the channel. The arm arrangement is radially movable to vary the volume of the channel. Enlarging the volume of the channel inhibits regenerative circulatory flow during pumping and limits the pressure generated.

公开(公告)号：US20230011740A1

公开(公告)日：2023-01-12

申请号：US17856113

申请日：2022-07-01

Applicant: Eaton Intelligent Power Limited

Inventor： Cody Mackey ,  Martin Augustine Clements ,  Matthew Reinhardt

IPC: F04D5/00 ,  F04D29/24 ,  F04D29/46

Abstract: A regenerative pump includes a housing defining a cavity having a fluid inlet arrangement and fluid outlet arrangement, and a channel having an open volume extending between the fluid inlet arrangement and the fluid outlet arrangement. A rotatable shaft extends into the housing. An impeller is mounted to the shaft within the cavity and has a plurality of vanes spaced circumferentially around the axis and opening into the channel. An arm arrangement at least partially defines walls of the channel. The arm arrangement is radially movable to vary the volume of the channel. Enlarging the volume of the channel inhibits regenerative circulatory flow during pumping and limits the pressure generated.

公开(公告)号：US20220403848A1

公开(公告)日：2022-12-22

申请号：US17840769

申请日：2022-06-15

Applicant: Eaton Intelligent Power Limited

Inventor： Cody Mackey ,  Martin Augustine Clements

IPC: F04D15/00 ,  F02C9/26

Abstract: A fuel pump system has a start stage pump and a main stage pump. Fuel is supplied to the start stage pump at lower engine speeds. As the engine speed increases, the fuel system restricts fuel to the start stage pump via a pressure regulating valve and the main stage pump takes over. An electronically controlled shut-off valve limits the amount of fuel supplied to the pressure regulating valve and, hence, the start stage pump when closed to safeguard against operating the start stage pump at unsafe engine speeds.