公开(公告)号：US20200277898A1

公开(公告)日：2020-09-03

申请号：US16740708

申请日：2020-01-13

Applicant: ROLLS-ROYCE plc

Inventor： Michael R. SMITH

IPC: F02C7/232 ,  F16K35/02 ,  F02C9/46 ,  F01D21/14

Abstract: The disclosure relates to a valve for a fuel system having a body with at least one inlet and one outlet, the inlet fluidly connected to a pressurised fuel source in use. A shuttle is mounted within the body, the shuttle having a cavity of fixed volume and movable between a first position where fluid is permitted to flow through the inlet and is prevented from flowing through the outlet and a second position where fluid is prevented from flowing through the inlet and is permitted to flow through the outlet. A piston is configured to engage the fluid within the shuttle cavity to move the shuttle between the first and second position. A biasing mechanism biases the shuttle towards the first position and where the shuttle moves towards the second position when the fluid within the shuttle reaches a critical pressure.