Patent ID: 9181910
Filing Date: 2015-11-10
Classification: F02M,F04B,F16K,Y10T

Abstract:
1. A control valve, in particular for metering a fluid for a delivery pump arranged downstream, having a housing, a flow channel defined by the housing, 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 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, the chamber being in fluid communication with the flow channel through a connector channel, and wherein the flow channel gradually narrows in cross-section in the backflow direction to a throttle restriction positioned at the connector channel between the flow channel and the fuel-filled fluid chamber within the shield.