公开(公告)号：US11828233B2

公开(公告)日：2023-11-28

申请号：US17535902

申请日：2021-11-26

Applicant: Hamilton Sundstrand Corporation

Inventor： Adrian L Stoicescu ,  Edward W. Goy ,  Benjamin T. Harder

IPC: F02C7/236 ,  F02C7/232 ,  F02C9/26 ,  F02C9/30 ,  F02C9/32

CPC classification number: F02C7/236 ,  F02C7/232 ,  F02C9/263 ,  F02C9/30 ,  F02C9/32 ,  F05D2220/323 ,  F05D2270/3015

Abstract: A fuel pump system can include a motor and a pump connected to the motor. The pump can be configured to receive an inlet flow from an inlet line, to pressurize the inlet flow, and to output a pressurized flow to an output line for an engine. The system can include a bypass line disposed between the outlet line and the inlet line, and a bypass valve disposed on the bypass line and configured to allow pressurized flow to flow to the inlet line in an open state, and to prevent pressurized flow from flowing to the inlet line in a closed state. The bypass valve can be configured to allow pressurized flow to flow to the inlet line to circulate flow and to maintain a constant pressure on the output line.