Patent ID: 9719475
Date: 2017-08-01
CPC Classifications: F02M,F04B,F16K,Y10T

Claim:
1. A control valve, in particular for metering a fluid for a delivery pump arranged downstream, having a flow channel, an axially movable valve needle, and a valve element that can be urged in an opening direction by the valve needle and is disposed in the flow channel, and when the valve element is actuated in the opening direction by the valve needle, the flow channel can at least temporarily experience a backflow of the fluid through it counter to the opening direction, wherein the valve element is formed as a valve plate, wherein a fluidically active shield is positioned to keep the backflow at least partly away from a face of the valve element, a fuel-filled fluid chamber being defined radially within the shield, wherein the shield blocks at least a central portion of the face of the valve plate from the backflow and the backflow is directed along a radially outer side the shield, and wherein in an open position of the control valve, the valve plate abuts the central portion of the shield while an annular connector channel is formed connecting the chamber with the flow channel.